A considerate, thoughtful and generous guy. Why can't more people just have some of those traits in their lives. Loving your vids, keep up the great work. All the best from the UK.
By far you guys have made impression on me to subscribe from seeing how humble you are with not only your subscribers but the people you come in contact with on your journey. We need more people like you that care for other and do what you can when you can. Thanks buddy, Henry from San Antonio TX
I came to the same conclusion watching this. I mean it could have been a massive defect as well but it's hard to believe that damage was accidental. Really enjoyed this video though the damage is mind blowing!
First time I see the bike, it felt like it was repo’d as the owner was upside down with the finance - to kill a motor like that drop the oil out or thin out the oil and rev till it goes pop
You're a real good dude for doing that man got your friend over here he's all in good spirits about helping you get your bike fixed up you already know he's doing it out of the kindness of his heart and that's why you're doing it for him that's really cool
Awesome episode! I've been following this from the start. Your editing is just getting better and better. The episodes flow with such ease; the graphics are timely and informative (Whiskey Throttle); and your voice-overs that tie the timeline together are perfect. And, you're having fun with all of this. I can see it on your face as you ham it up for the camera! I'll be looking forward to the remaining episode(s) and anxiously awaiting your maiden voyage. Well done, Sean! Keep up the great work 🙂
Thanks glad someone is noticing. Me and the team have been spending slot of time improving and learning to tell a better more clear story. I’m glad you noticed
The damage is astounding. I have the 2017 version so I’m glad you guys kept saying the damage is as extraordinary as it looks. Note to self: never red line an engine running sideways. 😄
I've seen a lot of engines in sad need of an overhaul but I have never seen one that completely lost the piston from the rod like that. How many RPM's was it turning to tear apart and wad the pieces of the piston up like that when it happened? Looking forward to more theories and speculation on what really happened in the last few seconds of life on that engine. Your offers of what you would do at the different time marks is commendable and shows a non-selfish and generous attitude. The words of wisdom are always a favorite. Thanks.
@@niallroofing9064 only if you are aware of t h e video. Their bike business isn't bikes and beards. I thought it strange no reply to honest questions. The " new" cylinder was a used part, probably with more than 2500 miles on it. Either you are up front with the story or you sell it online and don't say a word.
T R Even worse when he said it bent the crank. So not only do you have potentially damaged balls/races, you also have shear loading and unbalanced high rotational energy.. Major no no! Any one of those would be grounds for scrapping, and you have all three.
Steven Mays If you've ever paid attention to the videos they make, they do their best to take care of customers and give a lot of stuff away for free to random people.
First time riders, small high revving engine strung out on the highway. I've seen several of these with low oil. I use to do the crank recall on these in under 4 hours. Its easier just to pull the whole engine and work on it outside the frame.
Just watched some of yals videos . I'm beside myself how yal treat customers . I didn't think company's would have so much respect and compassion for their customers . Awesome job guys I'm definitely a fan
I work on old honda atc's and have never seen this kind of destruction, broken valves, stretched timing chains and the like from neglect, but holy hell thats not even close to neglect/accidental damage thats on purpose.
Really odd....when I buy flip bikes and ATVs....non running means to me as a literally grenaded engine. Like this. I piston and sleeve tons of engines due to negligence and abuse. You may have been fixing for years....but if you havent seen this.....you havent fixed anything. Just a fact. I have been wrenching for over 20 years and this happens ALL the time.
Love you guys wondering how this happened, I thought first thing that the owner knew it was being repossessed and sabotaged the engine. Am only a few minutes in but wanted to say that up front. Love that I found the channel and can watch the huge backlog.
bro im getting bless every time i watch your video im learning something about the bikes even i dont own one. i hope i can get one of your bikes that i can ride back to my country. God bless you more bro. for being humble and Godly person.
definitly, the dealer sold it to the auction dirt cheap on terms they would not sell until the warranty ran out. ALL to take money from these guys in the end. BIG SCAM.
That is just nuts. Honda's are some of the most reliable bikes on the road. The owner had to have done something to it on purpose. Can't wait for the next video to see the rest of the story.
Not necessarily true as far as Honda's being absolutely reliable I would have agreed with you 100% had we still been in the 70's or early 80's but these days they seem to have let things slide a tad. I'm looking at the engine in this CB300 and thinking to myself it looks strangely akin to the Honda CBR125 engine style and build and 'those engines, self detonate "frequently. EBay UK is full of them needing new motors or complete engine rebuilds and ok yeah they're not exactly a brand new model BUT taking everything into account they're not exactly old either you just can't trust anything these days. Purely for example I've "Always, swore by Yamaha's had loads of them amongst other models over the years including just about all the RD range but you look at some of the models now and think "Hey, that's a really nice bike I wouldn't mind adding one of them to the collection but it's always best to look into them first. The Yamaha YZF R125 sports bikes for instance were a big hit with the younger generation when they first came out extremely stylish 125 in race bike guise clip on bars disk brakes modern twin headlamp fairing rear sets alloy wheels etc but when you start doing your homework you find the engines in them are as weak as hell and blow up at the drop of a hat and again are FAR from being cheap to repair. Not a good advert for the Yamaha Corporation and certainly not great for poor young Jimmy who's only had the bike for the duration of the warranty which has just ran out and now he has to find the cash to get it repaired. EBay UK is full of those being parted out as well and "Yamaha" know of the problem but have done diddly squat about it they should have all been recalled and put right .. yeah like that's ever gonna happen. If you want a good reliable Honda go find and buy a 1970's CB350 or a CB550 or CB750K series machine or a 70's Z9 or Z1000 back then you could put your trust in your bike to kick into life every morning and run all day long NOW they may look pretty but reliability has gone right out the window ... and the cost of new parts will have you debating on whether or not you want to eat for the next few weeks OR just repair your bike ... absolutely ridiculous.
Pieces of the piston and cylinder sleeve in the crankcase. Jesus Christ literally everyone else would just buy a crate motor of similar size or different brand haha but hey to each it’s own. As far as the bearings go. They were brand new, even the tiniest shards of metal you can see would have a hard time penetrating that rubber seal of the bearing at least I would think. Go luck with the bike! Love the channel!
Look for salvage yards with wrecked bikes. There are bound to be a few out there that were totaled cosmetically & structurally that the motors are in great shape.
@@brianmartin414 You're right. The 300 is made in Thailand not China. With such a low price, small bike's like this can't be manufactured in Japan or the U.S..
I'd be shopping CoPart nationwide, gotta be a wrecked one out there somewhere that you could get an engine from. Good on y'all for working on the bike though, hope it goes together easily.
I love that game I play it with myself! Hide the keys , hide the tools, ten holes eight bolts, and the ultimate, spare parts after rebuild!! .....good times!
I had a Brand New XL350R in the 80's it blew up twice in one year took 3 months of complaints directly to Honda to get new engine which also blew. They stopped making the bike, VF 90 degree is the only Honda engine I love.
9:00 is the moment I'm noping out and putting it back in the auction. You're looking at a complete top and bottom disassembly and rebuild. Might as well just swap the engine from another bike, it would be cheaper.. Definitely a good call to get rid. Not worth the time/effort/cost.
In 37 years of spannering on bikes, I've seen Conrods through casings I've seen camchains wear through barrels, bust rings, bent valves, I've even seen a 10mm nut blow a hole out through a cam cover, but I've never seen a piston explode ! 😲😜🤘
The vast majority of engines are built to stay together no problem within their allowed rpm range, even at the top. Modern EFI with soft rev limiters means its ALMOST impossible to overrev and engine to destruction. I see two possibilities..... 1. If its overrevving, he likely downshifted and overspun the engine mechanically (think money shift) 2. He lugged the hell out of it and low speed, high load detonation blew the piston to bits. I'm partial to this scenario because none of the valves dropped, which can happen when the valvetrain is overrevved, and the limited bottom end damage supports a low rpm failure. Ive seen many engine drop valve due to lack of regular adjustments and when they fail at high revs there are usually lots of holes created from 14,000rpm parts breaking up.
Matto Cycle on the side of the tool box? That is where I used t buy my Castor 927 when my brother left his Banshee at my garage. It's right by Yuengling's Mill Creek brewery outside f St. Clair.
I done a Honda fx650 vigor that was just like this. The piston was in more than one piece. Bearings all fine. Replaced the crank and barrel. Was fine after that. Shame I can’t upload some pictures of the piston pieces I removed.
If the valves are bent 95 + % of the time the pistons is junk also. I have a friend that was ice riding a newer crf250, as he went down the back stretch it coughed and shut off. I went out to help him, oil all over the ice and I picked up the oil pump gear that was laying in the track. Long story short, the rod had come loose from the piston and came through the bottom of the motor and traveled on through the transmission, completely destroyed the engine.
Same exact thing happened to me once on a Snowmobile in the mountains. Had to take the belt off and get my dad to tow me back with his sled about 2 hours out of the back country! I was cold when we got back to the truck!!!!
We ended up just buying another engine off a guy cuz the case on the bottom was cracked! But the rest was the same, piston smashed to nothing and was locked up cuz all the pieces jammed
It happened when engine had 12k RPM. All the damage was done in a few seconds from 12k RPM to 0. If bike was running in 6th gear, wheel kept spinning crank.
Every new engine has a % that have catastrophic failures . It may only be 1-2 in a 1000 but it still happens. Honda engines are not impervious to this.
Every teacher for engines I've ever had; "Never rush the rebuild process if you want it to last!" reality; OKAY GUYS FULL REBUILD ONE DAY LETS GO. TIME IS MONEY
I've been riding and working on bikes for 42 years and have NEVER seen a piston collapse like that EVER if this is what you can expect from the empire of Japan these days they can keep em I'll stick with the classic stuff thank you very much at least you know what to expect from 70's and 80's stuff ... and they're a damn sight easier to tear down and fix.
@@brianmartin414 You'd be guessing wrong then wouldnt you Brian so far I've written a reply to your comment TWICE but for some reason it keeps getting removed so I won't be bothering again but long story short I ran my own very successful sales service and repair business for well over thirty years and even though now retired I still restore them just to keep myself busy and my hand in. I've owned and repaired hundreds of different machines over the years but "again, in all my time of doing so have still never seen a piston explode/come apart that badly I've seen the crown just about completely gone through detonation etc but never the complete thing in bits in the bottom of the casing leaving only the rod and gudgeon pin.
@@baron1946 was your service business for motorcycles or cars? You do not currently work as a motorcycle tech for a living was my point. If you were a current motorcycle tech in the modern time, you most likely would have seen this. The gudgeon pin reference tells me you're not familiar with current Japanese motorcycles. BSAs and triumphs from the 70s don't relate to modern times. Yes, I am a honda tech as well as Yamaha, kawasaki, Suzuki, Aprilias, piaggio, vespa, can am, canam spyder. I made a simple statement that could have been answered with a two letter word. Everybody "works" on bikes but that doesn't make them a professional in the modern time. The honda uses a cast piston that will break up into pieces unlike a forged one that would stay mostly intact. For sure this was deliberate on the owners part.
@@brianmartin414 Why would I be posting a reply on the topic of Motorcycles if my business was to do with cars and I don't refer to myself as a "Motorcycle Tech" I am what we refer to here in the UK as a "Time served Motorcycle mechanic of some years" I got my first bike at 9 years old am now fifty four and in that time have "Personally" owned just short of four hundred bikes NOT taking into account motorcycles bought "for and whilst in the Business" for resale. My personal bikes have always been classic Japanese stuff Honda's Suzuki's Yamaha's and Kawasakis with the exception of the odd CZ/MZ Cimatti or Puch etc I have only ever owned one Brit bike and that was a Triumph Tiger cub ... I prefer the classic Jap stuff hands down. I know my stuff and then some but I'll hold my hands up to not having stripped and rebuilt anything "New/modern for quite some time I think the last sport bike I stripped and rebuilt the motor on was a GPZ1000RX prior to that I have worked on Suzuki GS550's 750's 850's GS1000 S's Kawasaki Z's Honda CB's and just about every two stroke from the late 60's 70's and 80's you can think of. As I said now I do it just to keep me busy and keep my hand in currently restoring a 1976 Candy Gold FS1E and a 1980 Canadian Marble Blue GSX250 both of which are bikes I had when I was much younger they bring back some memories so I saved them from the scrap man and are now nearing completion. I'm tending to agree with you though on the "deliberate act" prognosis though this bike must have had the nuts revved off it for a prolonged period to do that and if it hasn't it's not a very good advert for Honda is it.
@@baron1946 you would be surprised how many car mechanics think they are motorcycle techs. I was an apprentice at a shop at 11 years old and I'm now 52. I always say you can't teach experience, you have to live it. I too prefer the older simpler models from the 80s. It seems nothing is made to last anymore. My personal streetbike is an 82 gpz 550 of which I have had several over the years. I appreciate your reply and meant no dis respect.
W.O.T at high speed when the piston let go, the process tock a second or two. I have seen it before at the track. This was relatively common back in 1970 and before. Any cracks in the cases?
Dont know much about bikes but I do know about Honda motors and I'm willing to bet the piston and rod are the same size as from a 97 civic hx single cam.
Way back in 2008 I sold my Sportster to a coworker a month after the warranty expired. I fully disclosed it needed a rear tire. He decided to do the work himself, and discovered the bearings were seized to the axle. I had no idea but he was pissed. After some back and forth talks with Harley, they ended up covering it two months out of warranty. Color me surprised.
I don't know who this Craig guy is, but he's great. More Craig!
A considerate, thoughtful and generous guy. Why can't more people just have some of those traits in their lives. Loving your vids, keep up the great work. All the best from the UK.
Would you buy this bike knowing the story behind it? Would you be satisfied with used parts to fix a bike with 2500 miles?
By far you guys have made impression on me to subscribe from seeing how humble you are with not only your subscribers but the people you come in contact with on your journey. We need more people like you that care for other and do what you can when you can. Thanks buddy, Henry from San Antonio TX
Looks like owner knew it was getting repoed and blew it up on purpose
Could be
I came to the same conclusion watching this. I mean it could have been a massive defect as well but it's hard to believe that damage was accidental. Really enjoyed this video though the damage is mind blowing!
I really wonder how long it sat on the rev limiter to do that. Hondas like this normally dont grenade themselves.
First time I see the bike, it felt like it was repo’d as the owner was upside down with the finance - to kill a motor like that drop the oil out or thin out the oil and rev till it goes pop
My thoughts exactly. I have rebuilt a lot of engines and never seen a failure like this unless it was NOS or stuck diesel injector.
You're a real good dude for doing that man got your friend over here he's all in good spirits about helping you get your bike fixed up you already know he's doing it out of the kindness of his heart and that's why you're doing it for him that's really cool
Awesome episode! I've been following this from the start. Your editing is just getting better and better. The episodes flow with such ease; the graphics are timely and informative (Whiskey Throttle); and your voice-overs that tie the timeline together are perfect. And, you're having fun with all of this. I can see it on your face as you ham it up for the camera!
I'll be looking forward to the remaining episode(s) and anxiously awaiting your maiden voyage. Well done, Sean! Keep up the great work 🙂
Thanks glad someone is noticing. Me and the team have been spending slot of time improving and learning to tell a better more clear story. I’m glad you noticed
I’ve seen some carnage in a motor before but that’s gnarly!
The damage is astounding. I have the 2017 version so I’m glad you guys kept saying the damage is as extraordinary as it looks. Note to self: never red line an engine running sideways. 😄
Omg you’re actually doing this, this is awesome!
I love the episodes with Sean and Craig troubleshooting and fixing bikes. 🙂
I've seen a lot of engines in sad need of an overhaul but I have never seen one that completely lost the piston from the rod like that. How many RPM's was it turning to tear apart and wad the pieces of the piston up like that when it happened? Looking forward to more theories and speculation on what really happened in the last few seconds of life on that engine. Your offers of what you would do at the different time marks is commendable and shows a non-selfish and generous attitude. The words of wisdom are always a favorite. Thanks.
Dude must the nicest person on the planet. The next bike I buy I'm definitely going to try to give my business to these guys
Would you buy this bike? Would they tell you tbe story behind it?
Brian Martin well they are not hiding the fact by making a full video on it 🤣
@@niallroofing9064 only if you are aware of t h e video. Their bike business isn't bikes and beards. I thought it strange no reply to honest questions. The " new" cylinder was a used part, probably with more than 2500 miles on it. Either you are up front with the story or you sell it online and don't say a word.
He is the best. If Your a customer he does his job.
@@brianmartin414 They BETTER
I'd never run old bearings, especially with catastrophic failure.
Nope. Not worth it.
T R Even worse when he said it bent the crank. So not only do you have potentially damaged balls/races, you also have shear loading and unbalanced high rotational energy.. Major no no! Any one of those would be grounds for scrapping, and you have all three.
Bearings are cheap cheap cheap!!! If there is any doubt at all change em!!!
Steven Mays If you've ever paid attention to the videos they make, they do their best to take care of customers and give a lot of stuff away for free to random people.
Not even on a skateboard...
Nice to see u back after 3 weeks. Hope you had a nice holiday.
Thank you and we had a great holiday
First time riders, small high revving engine strung out on the highway.
I've seen several of these with low oil.
I use to do the crank recall on these in under 4 hours. Its easier just to pull the whole engine and work on it outside the frame.
Probably got passed by a bigger bike, and tried to prove he can zip down the interstate at 90 too. 10-15 minutes of redlining later, no more bike.
Honestly should've given him all the rewards for having to deal with that
Hell yeah I agree
Easy to say when it’s not your money tho heheh
Just watched some of yals videos . I'm beside myself how yal treat customers . I didn't think company's would have so much respect and compassion for their customers . Awesome job guys I'm definitely a fan
At 9:15 he should have pulled a piece of bagel out lol
I want Craig to teach me his ways, seems like such a patient and great guy and very knowledgable.
Looked on your website and I’ll hand it to ya: you have the cleanest used bikes I’ve ever seen.
Even this one is pretty clean.
Because I don't have the tools or equipment to take an engine apart, I love watching people who do and can. Thanks for this treat.
Watch people throw away $$$$?????
I loved Craig's response when Sean asked, "what's the game plan"
I work on old honda atc's and have never seen this kind of destruction, broken valves, stretched timing chains and the like from neglect, but holy hell thats not even close to neglect/accidental damage thats on purpose.
this motorcycle has my exactly same engine :D but must be abused 100% for destroing it...
The cut scene to Hot Rod got me 😂😂😂👍
REALLY dig these types of videos!
Edit: in all my years fixing things like this.....NEVER seen something like that. Unreal
Really odd....when I buy flip bikes and ATVs....non running means to me as a literally grenaded engine. Like this. I piston and sleeve tons of engines due to negligence and abuse. You may have been fixing for years....but if you havent seen this.....you havent fixed anything. Just a fact. I have been wrenching for over 20 years and this happens ALL the time.
Love you guys wondering how this happened, I thought first thing that the owner knew it was being repossessed and sabotaged the engine. Am only a few minutes in but wanted to say that up front. Love that I found the channel and can watch the huge backlog.
bro im getting bless every time i watch your video im learning something about the bikes even i dont own one. i hope i can get one of your bikes that i can ride back to my country. God bless you more bro. for being humble and Godly person.
I'm the moral support guy for my good friend/ mechanic Sean I'm a 100% certified flashlight holder bro
One day out of warranty, not a Coincidence
definitly, the dealer sold it to the auction dirt cheap on terms they would not sell until the warranty ran out. ALL to take money from these guys in the end. BIG SCAM.
Think you hit the nail on the head
is it still possible to float the valves in modern bikes? i am watching towards the end and i think the mech need more than a meal.
Best episode yet... great content! 👍
You are such a blessing to your friends!!!!
That is just nuts. Honda's are some of the most reliable bikes on the road. The owner had to have done something to it on purpose. Can't wait for the next video to see the rest of the story.
Not necessarily true as far as Honda's being absolutely reliable I would have agreed with you 100% had we still been in the 70's or early 80's but these days they seem to have let things slide a tad. I'm looking at the engine in this CB300 and thinking to myself it looks strangely akin to the Honda CBR125 engine style and build and 'those engines, self detonate "frequently. EBay UK is full of them needing new motors or complete engine rebuilds and ok yeah they're not exactly a brand new model BUT taking everything into account they're not exactly old either you just can't trust anything these days.
Purely for example I've "Always, swore by Yamaha's had loads of them amongst other models over the years including just about all the RD range but you look at some of the models now and think "Hey, that's a really nice bike I wouldn't mind adding one of them to the collection but it's always best to look into them first. The Yamaha YZF R125 sports bikes for instance were a big hit with the younger generation when they first came out extremely stylish 125 in race bike guise clip on bars disk brakes modern twin headlamp fairing rear sets alloy wheels etc but when you start doing your homework you find the engines in them are as weak as hell and blow up at the drop of a hat and again are FAR from being cheap to repair.
Not a good advert for the Yamaha Corporation and certainly not great for poor young Jimmy who's only had the bike for the duration of the warranty which has just ran out and now he has to find the cash to get it repaired. EBay UK is full of those being parted out as well and "Yamaha" know of the problem but have done diddly squat about it they should have all been recalled and put right .. yeah like that's ever gonna happen.
If you want a good reliable Honda go find and buy a 1970's CB350 or a CB550 or CB750K series machine or a 70's Z9 or Z1000 back then you could put your trust in your bike to kick into life every morning and run all day long NOW they may look pretty but reliability has gone right out the window ... and the cost of new parts will have you debating on whether or not you want to eat for the next few weeks OR just repair your bike ... absolutely ridiculous.
Holy cow my ex is less of a mess . To me it looked like it was done on purpose to bad it looked like a nice bike
Don’t worry we will fix it
@@BikesandBeards his ex or the bike ;D
11:22
This modern camera technology is absolutely wonderful.
Pieces of the piston and cylinder sleeve in the crankcase. Jesus Christ literally everyone else would just buy a crate motor of similar size or different brand haha but hey to each it’s own. As far as the bearings go. They were brand new, even the tiniest shards of metal you can see would have a hard time penetrating that rubber seal of the bearing at least I would think. Go luck with the bike! Love the channel!
Look for salvage yards with wrecked bikes.
There are bound to be a few out there that were totaled cosmetically & structurally that the motors are in great shape.
I'm pretty sure this model is made in China and that's why the parts are hard to come by.
Its not made in China but I see Harley is building a similar model in China.
@@brianmartin414 You're right. The 300 is made in Thailand not China. With such a low price, small bike's like this can't be manufactured in Japan or the U.S..
That's where they make harley , not Honda . lol 😂
I'd be shopping CoPart nationwide, gotta be a wrecked one out there somewhere that you could get an engine from. Good on y'all for working on the bike though, hope it goes together easily.
Great video, enjoyed it all!
Best video you've done in a long time. You'll have to buy more carnaged bikes. They're just a big unpredictable surprise 😊
Anxious to see the next video on this bike.......
try to find a wreck one online and replace the motor..i dont know ..thats just a suggestion may b will b cheeper ..God blees U guys ..and good luck
I have a 2012 CBR250R, it was good to see what's inside of the engine cases. thanks !
It's been 8 whole days now. I can't wait to know what's happening with this bike. Never ever seen a piston so chewed up. :) Thanks guys!
i have a cb300f with 7500 miles on it and it runs great sorry for your troubles
I've watched hot rod 20 times and every time I see him banging on that engine with a hammer it breaks my soul just a little more
This is fun (so sorry). Do these "8 hours built" more often
I love that game I play it with myself! Hide the keys , hide the tools, ten holes eight bolts, and the ultimate, spare parts after rebuild!! .....good times!
I had a Brand New XL350R in the 80's it blew up twice in one year took 3 months of complaints directly to Honda to get new engine which also blew. They stopped making the bike, VF 90 degree is the only Honda engine I love.
9:00 is the moment I'm noping out and putting it back in the auction. You're looking at a complete top and bottom disassembly and rebuild. Might as well just swap the engine from another bike, it would be cheaper..
Definitely a good call to get rid. Not worth the time/effort/cost.
@ian trofimov you ain't wrong. I rebuilt my Sportster 1200 and my road king. Easy peasy.
Doing a compression test on that bike 🏍
It’s like the doctor telling you that you look OK when you’re clearly you’re not 🤣
I loved how hes smashing a donut or whatever that is while the guys working 😂😂 i laughed out loud a bit.
Food for thought. That bike had a crankshaft recall from Honda. Ever run the vin at a Honda dealer and see if it was preformed?
I love videos like these.
The 300f has a pretty major crankcase/shaft recall.
Really liked this video! I learned a lot!
Love your vids, what a great channel! Thanks Sean/shaun/shawn?!
In 37 years of spannering on bikes, I've seen Conrods through casings I've seen camchains wear through barrels, bust rings, bent valves, I've even seen a 10mm nut blow a hole out through a cam cover, but I've never seen a piston explode ! 😲😜🤘
there was a recall on those crankshafts and used a updated crank. most were swapped before sales.
The vast majority of engines are built to stay together no problem within their allowed rpm range, even at the top. Modern EFI with soft rev limiters means its ALMOST impossible to overrev and engine to destruction. I see two possibilities.....
1. If its overrevving, he likely downshifted and overspun the engine mechanically (think money shift)
2. He lugged the hell out of it and low speed, high load detonation blew the piston to bits. I'm partial to this scenario because none of the valves dropped, which can happen when the valvetrain is overrevved, and the limited bottom end damage supports a low rpm failure. Ive seen many engine drop valve due to lack of regular adjustments and when they fail at high revs there are usually lots of holes created from 14,000rpm parts breaking up.
Matto Cycle on the side of the tool box? That is where I used t buy my Castor 927 when my brother left his Banshee at my garage. It's right by Yuengling's Mill Creek brewery outside f St. Clair.
Wow sir that's one mess , never seen a piston so bad , nice to watch nice people doing a great job , Beard on guys !🇬🇧
Really look forward to the part two video.
Wow...looks like they fed it some Nitrous to blow it up? Great series on the rebuild and awesome YT channel.
This guy deserves ALL of what you just said AND more....lol
really like these style videos good job brotha.
What did they teach us at MMI step two Craig pull the engine!!! Lol
As somebody that's had to do a top end rebuild on a bike, it would have saved me tons of time if I'd just pulled the damned engine.
Incredible! Keep it up
I've seen holes in pistons but never this. Crazy!
I done a Honda fx650 vigor that was just like this. The piston was in more than one piece. Bearings all fine. Replaced the crank and barrel. Was fine after that. Shame I can’t upload some pictures of the piston pieces I removed.
Pls continue the video I love this type of video
If the valves are bent 95 + % of the time the pistons is junk also. I have a friend that was ice riding a newer crf250, as he went down the back stretch it coughed and shut off. I went out to help him, oil all over the ice and I picked up the oil pump gear that was laying in the track. Long story short, the rod had come loose from the piston and came through the bottom of the motor and traveled on through the transmission, completely destroyed the engine.
Same exact thing happened to me once on a Snowmobile in the mountains. Had to take the belt off and get my dad to tow me back with his sled about 2 hours out of the back country! I was cold when we got back to the truck!!!!
We ended up just buying another engine off a guy cuz the case on the bottom was cracked! But the rest was the same, piston smashed to nothing and was locked up cuz all the pieces jammed
It happened when engine had 12k RPM. All the damage was done in a few seconds from 12k RPM to 0. If bike was running in 6th gear, wheel kept spinning crank.
Every new engine has a % that have catastrophic failures . It may only be 1-2 in a 1000 but it still happens. Honda engines are not impervious to this.
I think i found my new favorite TH-cam channel.
Every teacher for engines I've ever had; "Never rush the rebuild process if you want it to last!" reality; OKAY GUYS FULL REBUILD ONE DAY LETS GO. TIME IS MONEY
Hahaha 1 hour rebuild !
Grenade 300RR. Amazing video gentlemen
Yeah Sean was stalling him the whole time. 😂😂
I've been riding and working on bikes for 42 years and have NEVER seen a piston collapse like that EVER if this is what you can expect from the empire of Japan these days they can keep em I'll stick with the classic stuff thank you very much at least you know what to expect from 70's and 80's stuff ... and they're a damn sight easier to tear down and fix.
I'm guessing you don't fix motorcycles for a living.
@@brianmartin414 You'd be guessing wrong then wouldnt you Brian so far I've written a reply to your comment TWICE but for some reason it keeps getting removed so I won't be bothering again but long story short I ran my own very successful sales service and repair business for well over thirty years and even though now retired I still restore them just to keep myself busy and my hand in. I've owned and repaired hundreds of different machines over the years but "again, in all my time of doing so have still never seen a piston explode/come apart that badly I've seen the crown just about completely gone through detonation etc but never the complete thing in bits in the bottom of the casing leaving only the rod and gudgeon pin.
@@baron1946 was your service business for motorcycles or cars? You do not currently work as a motorcycle tech for a living was my point. If you were a current motorcycle tech in the modern time, you most likely would have seen this. The gudgeon pin reference tells me you're not familiar with current Japanese motorcycles. BSAs and triumphs from the 70s don't relate to modern times. Yes, I am a honda tech as well as Yamaha, kawasaki, Suzuki, Aprilias, piaggio, vespa, can am, canam spyder. I made a simple statement that could have been answered with a two letter word. Everybody "works" on bikes but that doesn't make them a professional in the modern time. The honda uses a cast piston that will break up into pieces unlike a forged one that would stay mostly intact. For sure this was deliberate on the owners part.
@@brianmartin414 Why would I be posting a reply on the topic of Motorcycles if my business was to do with cars and I don't refer to myself as a "Motorcycle Tech" I am what we refer to here in the UK as a "Time served Motorcycle mechanic of some years" I got my first bike at 9 years old am now fifty four and in that time have "Personally" owned just short of four hundred bikes NOT taking into account motorcycles bought "for and whilst in the Business" for resale. My personal bikes have always been classic Japanese stuff Honda's Suzuki's Yamaha's and Kawasakis with the exception of the odd CZ/MZ Cimatti or Puch etc I have only ever owned one Brit bike and that was a Triumph Tiger cub ... I prefer the classic Jap stuff hands down.
I know my stuff and then some but I'll hold my hands up to not having stripped and rebuilt anything "New/modern for quite some time I think the last sport bike I stripped and rebuilt the motor on was a GPZ1000RX prior to that I have worked on Suzuki GS550's 750's 850's GS1000 S's Kawasaki Z's Honda CB's and just about every two stroke from the late 60's 70's and 80's you can think of.
As I said now I do it just to keep me busy and keep my hand in currently restoring a 1976 Candy Gold FS1E and a 1980 Canadian Marble Blue GSX250 both of which are bikes I had when I was much younger they bring back some memories so I saved them from the scrap man and are now nearing completion. I'm tending to agree with you though on the "deliberate act" prognosis though this bike must have had the nuts revved off it for a prolonged period to do that and if it hasn't it's not a very good advert for Honda is it.
@@baron1946 you would be surprised how many car mechanics think they are motorcycle techs. I was an apprentice at a shop at 11 years old and I'm now 52. I always say you can't teach experience, you have to live it. I too prefer the older simpler models from the 80s. It seems nothing is made to last anymore. My personal streetbike is an 82 gpz 550 of which I have had several over the years. I appreciate your reply and meant no dis respect.
9:07 😂😂🤣😭😭 I know this pain.
Wife "Why are you so late?"
Rider "Piston broke!"
Wife "You always are!"
With all that inertia that suddenly stops. Bearings should be replaced.
I would not want anything to do with a motor like that. Hondas are disposable built. One time, long time.
I have seen some pistons that have grenaded before, but aint NEVER seen a piston THAT destroyed!
W.O.T at high speed when the piston let go, the process tock a second or two. I have seen it before at the track. This was relatively common back in 1970 and before. Any cracks in the cases?
5:11 One thing you need is moral support! 20 seconds later "I don't like this Craig!"
Someone had throttle wide open in neutral and destroyed the piston.
Craig! What lift is that? I need a good lift and would be my first one. Thank you sir!
Dont know much about bikes but I do know about Honda motors and I'm willing to bet the piston and rod are the same size as from a 97 civic hx single cam.
Wow... Honda CB300f is actually the bike i wanna get hahaha. I like the naked style sport bike like this
“Hide the tools” you will die slowly for this
No way possible n hell I'd use those same bearings
Me and my dad basically did the same thing with a cbr600 f4, it finally runs and has plates
--- It is amazing how much of the rest of the motor survived.
going 120mph and he slammed it into first gear... clutch was to tight so it got fucked up... is their a flat spot on the rear tire?
I ll have to check
Don't Forget to do the follow up vid.
And please make some vídeos showing the final products of the other restauration projects.
We will
Oh an Aprilia SXV in bits in the background. What a surprise.
DUDE! I have that exact bike, it's my first one too 😍
Way back in 2008 I sold my Sportster to a coworker a month after the warranty expired. I fully disclosed it needed a rear tire. He decided to do the work himself, and discovered the bearings were seized to the axle. I had no idea but he was pissed. After some back and forth talks with Harley, they ended up covering it two months out of warranty. Color me surprised.