Will The Crank Fail Again? Rebuilding The 1996 Suzuki Rm125 Dirt Bike
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- เผยแพร่เมื่อ 30 ก.ย. 2024
- I finally get my crank back from being rebuilt and I start to rebuild my 1996 Suzuki Rm125 dirt bike. Will the crank hold up this time or fail again? #Suzuki, #Rm125, #Rebuild,
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might sound really strange, but I really like the fact I see you working on the floor of your garage on an old dirty piece of cardboard.... sometimes I feel like I can't do something because I don't have the proper space or professional equipment, but when I see you working in similar conditions it gives me more confidence. Keep up the great work 2vintage
Same man this guy takes all my excuses away
Simple set of wrenches, some Google nowadays. And a comfortable space. You can get a lot done with that nowadays :)
You are totally right. I love joe and his videos. How he works with what hes got. Yes he has some special tools that's are needed. But he doesnt have a huge garage, or a huge work bench, or a fabrication table. And he gets some shit done!
Yeah I just rebuilt my first bike last year it was the first bike I ever bought for myself and google and TH-cam taught me a lot. And of course my dad taught me too
I don't have a garage...
Leave your right hand off the throttle while you’re trying to start that thing. You’re not getting enough pressure through the pilot circuit when the slides up
ive been saying this for years. he cant understand why its so hard to start engines...dont waist the effort typing, trust me, cant tell him anything
@@n2vxc i doubt you are on to tell 2vintage what to do. He obviously knows what he is doing and has a ton of experience. no need to get upset
@@n2vxc yea hes hard headed but also still learning, he only just started splitting cases few years ago. give him 10 more years of experience and he will figure it out.
Y'all stop dissing on him its a 2 stroke you need to twist the throttle
@@evanowens8647 I wasn't dissing just stated that he is still learning. Also a good running bike should start with out the throttle, edit btw it dosen't really matter if he twists the throttle or not, ive seen it done were ppl will kick twice with throttle then kick without throttle and vice versa,
You are flooding the damn bike dude... Why do you twist your hand every kick. A well tuned two stroke should start 1-2 kicks when cold and 1 kick warm every time. Only when its warm might you need to give it a little throttle.
@UCyBYWvHr2Gqgl-fs9IG65ow 😜 too many clapped bikes I've seen and like you said 25 kicks to start a bike.. Clapped out. Bad reeds, worn out top end or rings, and wrong improperly tuned jetting will all make a bike be a 25+ kick bike. I fix up two strokes and all my bikes idle and start 1-2 kicks when cold, even in -7 below zero with 12 inches of snow on the ground. Too many clueless people think this guy knows what he is doing, and they praise him for it. He doesn't even leak down test engines.. Seen him hammering metal on metal 😂 kids got no sense about not screwing stuff up.
@Mark Deaton oh he would be the kind of guy to tell you "two strokes aren't supposed to idle"... Lmfao every shitty mechanic uses that one because they don't know how to prolerly adjust the idle screw and jet the bike properly where the pilot screw has an effect.
Because he doesn't know how to start a bike properly. He's been told this a hundred times, but obviously doesn't take any notice about twisting the shit out of the throttle every time he tries to start a bike. Some people just refuse to listen.
Did you see that the carburetor needed to be rebuilt? That's why it wasn't starting right away.
@@2vintage the huge plume of smoke when it fired up was a bunch of extra fuel. Either way if it doesn't start without throttle input then you need to clean the carb. Cranking the throttle to get stuff started is a bad habit.
Claw hammers are for carpenters. Get yourself a set of ball pien hammers and dead blow hammers. Harbor Freight is fine.. Also sometimes using a piece of hardwood is best to set a bearing.
While you are at Harbor freight...grab proper wire strippers and terminal crimping pliers!
Antique shovel handles cut in appropriate lengths and sizes
Free bearing driver (The old wood trick)
no one cares
He can use whatever hammer he has
@@CleanFc250 sure but having a heavier hammer would work better.. more impact energy..
When starting cold with an enrichenment circuit in the carb for starting, do NOT give it throttle when cranking.
People tell him this in every single video. He just won't take the advice.
Yeah, don't touch throttle when choke is on or totally defeats it. Same w 4 strokes fellas, if it doesn't start in 3-4 kicks stop, figure it out.
yeah i was gonna say i was getting triggered
Can you explain me why? I want learn something new
@@michaelzilio4268 because, a cold engine requires more fuel than air when starting it. That's what the choke does, either blocks off the air, or if it's an enrichener type choke it gives it more fuel, and less air. So by opening the throttle when the choke is on, you are letting in lot's more air than fuel, making it difficult to start, and defeating the purpose of the choke.
Man you can really get that LIMP NOODLE WRIST going when you try to start stuff! HELL even before you tried to start it. Going to town like, WHA! WHA! WHA! Let me drop a bit on you, there's no accelerator pump there pal.😉
He doesn't listen, people tell him over and over.
@@wisecampmotorcycles8258 So he has been told in the comments but keeps doing it? If so I wonder why he chooses to do something that is 100 percent incorrect?
I have worked around people like this, they are not good at taking advice at all.
@@jcaashby3 LoL man, and he has done the same thing in every video since this one. There's just no helping some people !
You didn’t look really hard for a gasket set did you They is all kinds on eBay I just rebuilt one of these same motors last year little short kick 125
Guesses are he didn't look typed it into Google and heaps popped up.
200k subscribers. Figured he would be more confident, which he is for the most part. But I sure was scratching my head a few times. Like why would you not clean the case if you’re going to completely disassemble and split?!
@@sygrene When I saw him start the rebuild I was wondering WHEN he was going to actually clean the engine cases inside and out. It never happened. I would never let him rebuild an engine for me without a full cleaning of everything along with a visual inspection. You go to the trouble of splitting the cases no point in skipping over a crucial part of the job. CLEANING!!!
When you put the nut on the clutch basket you didn't bend the lock washer back onto the nut?
I didnt think anyone else noticed good eye 👍
I came here to see if anyone else noticed. That nut will work it self loose for sure. Done the same mistake myself.
I would recommend next time putting assemble lube in those crank bearings. Just saying
Agree. And put a piece of metal over the hole when heating. All that hot air was just blowing through.
Every so often you release a video that makes me face palm. This is one of those🤦♂️
Rebuilding a 1998 myself right, I’m a fan of the old RM’s ✊🏻💨
Lol that ain’t old. Try a 78 rm 400 or a 78 yz 400
2 stroke starting if it has sat more than a few days;
Turn fuel on and lean bike over on its side until fuel pours out the over flow.
Turn choke on, bring engine to TDC and WITHOUT turning throttle kick.
FYI black oily spooge from the silencer is normal if bike isn't brought up to running temp long and ridden hard like it was designed to be. Probably needs silencer repacked and carb jetting tuned as these small bore 2 strokes are sensitive to temp and altitude changes. 96/97 rm125 was a fun bike with a good lowend(for a 125) and strong upper midrange. Head shake on these bikes could be scary af back in the day.
When it didn't start at first, it sounded to me like it wasn't sucking fuel. Surely when he fitted the carb slide, he knew to align the slide groove with the spigot on the one side of the carb. Failure to do so, means you're looking at a fast WOT break-in. One of my brother's friends was at our house doing a piston swap on his DT175. When the new parts were in and he fired that puppy up, it went straight to a gazillion rpm in an instant! Scared the crap out of our dog who was keeping us company in the garage! Of course, the bikes kill-switch wasn't fitted, so it was some time before he found that he could switch the ignition off and stop the engine.
Fastest break-in of a new piston ever!
@@christopherknee5756 lmao
Lol I get on my dad's 125 trials after 6 months and just Choke it and it starts 2nd kick I never do none of that
Freezing the bearing causes it to rust once it the condensation comes from going frozen to hot. The water is trapped between cases and makes the bearings go out prematurely
You don't need to give it revs when your kicking it. Just put the choke on. Love your videos man, been a subscriber for years 👍
I've done quite a few of these crank bearings and I always use a small propane torch. Heat it up for around 10-15 minutes plus the cold bearing and no pounding needs to be done. A heat gun is not aggressive enough for the aluminum case
That was my thought. Heat guns are great for re-liquefying glue or something but not so great for metals, otherwise it would melt itself.
@@audiogarden21 heatgun is fine it needs to be around 100 celsius and a heatgun is more than capable to get it that hot, a blowtorch is just quicker. then its hot in couple of seconds
Dry ice for bearings and halves in the oven until ready.
Bearing in the freezer case half in the oven. Works every time.
I was about to ask why he was not using a propane torch to heat the crankcase up to accept the cold bearing, as long as you aren't using map gas and some common sense this is the most effective way
You can cut you own gaskets. Just go to the auto parts store.
I believe you forgot to bend the clutch washer around the nut?
I had to take it off again when I remembered I hadn't done it.
Looks like you have your leg and wrist connected lol stop pumping throttle like that when kicking. Just hold throttle open in whatever position you want try not to pump it like that
LOL that triggered me when I saw him doing that. Slightly open helps but pumping every kick is not helping at all.
@19:23 I like how he said "We'll try to torque that down" then proceeds to give it some oooga doogas from the impact.
I like your style
yep, and that's how you over tighten and and strip/damage parts. Do it the right way per the manual or not at all.
Threated on or cross threaded....tights tight! 😆 if its cross threaded no worries of having to use lock tight 😄
love the videos. would you please put that claw hammmer away and find you a full size Ball Peened hammer, a 14oz claw is just too small for most of the jobs you are doing. it makes it harder than it needs to be. Ask me how I know? I have a 20oz ball peened that I use all the time. It is worth the investment.
For all the knowledge you have, and you sit there flooding it while you try and start it.
Use a candle to heat next time work better
All that time and money then use an old torn up gasket. My dad would have slapped me. By a sheet of gasket. Glue it on and then the next day, break out an exacto knife. 20 minutes versus rebuild again in a week? That is one pretty bike though.
I just went on ebay and found an engine gasket kit in 2 sec he is so full of crap putting rtv on the cases hack
I’m concerned that you might have put that right side crank seal in backwards.
Also he put it down on dirty cardboard!
@@bananabrooks3836 The whole engine is dirty. Seeing him start his rebuild with a dirty ass engine case has me scratching my head. At some point I hope he realizes you need to clean everything before rebuilding. I clean and inspect every single part. Especially for a bike this old there is bound to be a ton of worn parts besides that damaged crank.
Dude u got to quit adjusting with throttle cable.sorry.
They sell a gasket kit for it that comes with the case gasket on ebay
2 vintage please read this comment when you think the bearings hot enough give it 5 more minutes lol and the lack of assembly lube scares me
For the future I’d heat the entire case together or put the main bearings on the crank and use the puller to bottom them out
agreed
If that is putting a sideways force on the small bearing race, I would not do it that way.
Seem MAYBE the crankshaft bearings on the RM125 engines is a weakness???? I could be wrong.
Dude use a higher oil mix than 40:1 for first start up and brake in. I'd use 32:1 smoke a bit but will always be lubed.😮
You should run 32:1 on your 2 strokes that’s what most of them run from the factory
Exactly, he puts a 40:1 ratio and then wonders why it is smoking.
@@dieseltrucksfirewood2540 It is smoking because it is running rich on gas. Believe it or not, a 2-stroke, (carburetor type) will not smoke much at all when it is jetted well, even with more oil. When it is jetted well, the bike will no longer black goop's up the pipe either, and things like power valves tens to say working freely longer.
I agree, 32:1 is probably the best mix for a 2-stroke MX bike, and just mixing from 40:1 to 32:1 will lean his jetting a bit, (less gas going through the jet because there is more oil. The amount of gas is what counts for jetting,--not the oil.).
I miss my 87RM 125, I let a friend borrow it and it got caught on the train tracks and he refused to let it go and he got killed trying to get it out, so I have a hard time buying and riding a yellow and black RM anymore even though I think they are awesome js
Suzuki is the worst about stocking extra parts. I had a old RM and SP that was virtually impossible to find parts for.
Tip for rebuilding....clean everything!! I would not advise putting an engine back together until every single part is cleaned. The cases, trans...all of it! All that dirt 9:44 falling off the engine should not even be there. Clean the exterior of the engine before taking it apart helps. Then clean it again before rebuild. You dont want to risk any of that dirt getting inside the engine during rebuild.
Not being a smart-ass
You buy a good rod then buy and buy trash main bearings and seal.
From China. Maybe that's why there was a failure on this bike.
Love the Rms. I redid a 98 RM 250 a couple years ago. Bad crank bearings and piston. Still runs great. She's a rippa.🤘👍😁🇺🇸 Nice job. A lot if parts in those engines.
Why wouldn't you clean all the dirty stuff you can't reach after, before you put the engine back in?
Please read up on how to crank these kick start bikes correctly. This is cringe worthy dude!
And i think its running bad cause you dont have the airfilter on
Just bought a tusk crank Case gasket last month for a 96 rm125
Cometic gasket will make a new gasket for any gasket needed , you must first place a sheet of paper over the surface then take a pencil & trace or shade over the gasket surface back n forth to make an identical gasket drawing then send it in
Quit twisting throttle, it's flooded, and your dumping fuel in may have to air it out.
Honda all the way Suzuki's are junk even if you get it running it will never run right !
Gaskets are the same 92-97 plenty of kits on line. No reason not to use a kit even if you don't use them all and save them for future builds.
Well I'll be darn it!? 😕 Joe is the man. Let him be bro.
No the 96 an 97 rm125 engines are different from the 91 to 95 bikes
The gasket is on eBay for 1996 rm 125
Did you use a torque wrench even once? There are torque specs to follow you know?
Sounds like crap
You've got the crank case seperator connected to the end of the crank to pull it back together that's why the crank won't turn (@ 13:47) DOH! Then you realised your mistake :-)
Just a little tip make sure the bearing is straight when you put it in thats why it was so hard to install the crank breaings
Quicker to use map gas or torch to heat it up better just never keep it in same spot
Love the videos but my knees and back ache watching them! Build a nice work bench will ya!!!! 🤣
Allmost every time you do one of this bikes it just will not run right, this is very strange, most of my old bikes runs right first time around
Have you ever thought about cleaning those cases while you wait on parts? I’ve noticed that you’ve worked with dirt on parts a lot.
I picked up a 2007 for $500, great condition but just like yours bad crank. i dont know how you can work with that dam camera in front of you. i tried it, just cant do it. LOL
Crank seal goes with spring facing out to keep oil out of crankcase. So if you can’t see the spring, it’s in wrong. I didn’t happen to see which way you put it in so that bog and excessive smoke. Just a thought.
Rocky mountain has these gaskets..
Also that has bridge exsuast port so piston lube holes should be drilled. Suz pistons don't come pre drilled like yam/kaw. Also easier to but engine all together on bench . But nice job 👍 good old bike raced one of those one time back in 97'.
No they don’t, just rebuilt my top on my 99’ rm250 and if wiseco wanted the holes to be pre drill and the piston is specifically for the bike, they would have done it from the factory.
@@logannaramore54 99 250 doesn't have a bridge
i would try starting without twisting the throttle
That bearing should have just dropped in you shouldnt have to do no pounding either press it or drop it directly in and give it a little love tap
Was not hot enough. A oven works better.
No banshee for sale trying to buy ☝️
Engine parts are interchangeable between 1992 and 1996 on the rm125s so check for other years too when looking for parts. Maybe you can find a gasket set from 92-96.
Thats why I love my yz80 any parts 1993 - 2001 will work. My bike is a 2001 and my 3rd gear is from a 84 or 87 yz80, I've haven't had trouble with 2nd yet but when i do im changing all gears to 98s
@@gabe10222 I have a 1995 yz 80 haha, great bikes.
Anyone on here know what parts are interchangeable on 2001 kx125 tried to do research and nothing came up with earlier years or later years that work in the engine… be helpful if someone could help me out,
@@trev9177 1999 to 2002 I think for the kx125
@@gabe10222 1999-2002 are suppose to be interchangeable?? You think
You can use something to take an impression of the crank case, like when you take a piece of paper lay it on a penny and color you get your impression. Only instead you have the piece of paper taped to the case and only use the pencil where you want gasket material. Then you can cut out your impression and trace that onto gasket paper.
Man kick these bikes like a damn man 🤦♂️
Hey joe for future use. When I was putting my rm85 back together. I didn’t put my crank in the freezer, I just got a socket that was big enough as the inner bearing. Heated it up and let it sit in the bearing for couple mins and the crank just went in, after couple mins. I was able to pull it out and put it back in. Worked for me and my rm is still running strong
Putting steel parts in a freezer to shrink them does very very little good, and more harm in some cases IMO. Just measure the diameter with a micrometer before and after the freeze, and you will see very little difference in their size, (like about .0001"). The bore in the aluminum cases for a bearing will expand about .002" in a 300/350 degree F. oven, and even the hot bearings will drop right out. Now, if you drop a cold bearing in there, it is likely you will start a bit crooked, and the cold bearing will suck the heat out of the cases, shrinking the bore to a press fit again, and trap your crooked bearing. I use heat to remove them today, and a press to install them at room temps.
But, freezing a steel part that presses into another steel part may help some, as the press fit is very light.
FUCKIN G STOP WITH THE THROTTLE
The problem is written right on the seat
That clutch basket has some teeth.
had to laugh as i was only talking about the first start rev to the moon strategy the other video PUT A CHAIN ON because occasionally the kill switch will do nothing when its revving so hard and you just stall it , but with no chain you cant and all your hard work goes bang. but well done it runs and looks cool
That is a Huge issue in the diesel engine industry. It's called a "run-a-way" The last thing you want. Man, Always have a quick kill solution.
You better define how you stall the bike with the chain on. I would jam the rear brake, but I am sure some kids will end up launching their bike across the garage floor. :)
@@EarthSurferUSA That sounds like a learning experience.
Use the proper thickness of gasket.never seen a pipe plug in my life.
when you were having "smash" them bearings in the case for the crank i had to look away i was nervous for you lol i thought the case was gonna crack but im glad it didnt an the tool still on when you checked to see if the crank was smooth had me in a panic too lol
For the bearing u might want to use like a blow torch instead of a heat gun but I don’t know if that would be too hot
That's a really clean bike for the year it's worth fixing for sure!
I imagine that at a motorcycle shop they would use liquid nitrogen to get the bearings super cold or they might actually press them with a hydraulic press. It seems like it would be very important that the bearings are in perfect alignment.
I worked in a shop that did install bearing on to shafts as part of larger and i mean LARGE assemblies. 300-400mm wide shafts and over. Bearings were craned in in some cases. No joke. Shafts were Liquid nitrogened, and bearings warmed via a induction element, looked like a flat coathanger arm And magnets were attached to allow a circuit (i think) but yes that was what i observed
I know auto shops use a press and you can feel its bottomed when you're pulling on the press handle and suddenly there is resistance. Presses are getting cheap too.
Great job, at least you showed the real struggles of starting the bike. Instead of skipping it in the video.
i loved my rm125 did the same thing bought it for 75 with the case split rebuilt the whole motor ran it a few years then upgraded to a rm250. which was also locked up did a full rebuild on that as well suzuki makes a great bike but cant make a clutch to save their life.
Ummm You made the bearing wayyyyyyyyy harder to go in that it would have. When you heat the case the metal expands.. NOT OUTWARD!!!! it expands into the void making the hole much smaller....The "Nothingness" doesnt expand which is what you want...In order for the hole or "nothingness" to expand you need to contract the metal not expand it.......Guess how you would do that? Hint, the OD of the bearing did in fact shrink when you put it in the freezer....
I'm rebuilding my first bike currently. It's a 1999 RM250, same thing shattered the piston, and it locked up the crank. Crank bearings are rough, and the crank had the same problem. I had my crank rebuilt at CWI though.
It’s not just the 1996 unfortunately. Pretty much all 2 smoker Suzuki’s are impossible to find parts for now a days. Hell, that’s why travis Pastrana went to KTM. Sucks
I had a 1986cr250 cylinder rebuilt at millennium tech.deep grooves and new nikasil coating.
We see that banshee in back 👀👀
What 2 stroke oil do you run? I have a cr250 an rm125 and I mix 40-1 with Castrol 927 an never had an issue. I haven't had to rebuild it yet. An on the plus side it smells amazing!
This is like asmr
You ain't been vintage about shit you don't know shit about them vintage bikes I started off on an 83 cr60 and I've been riding ever since 83 think I don't know about those 90s two strokes on 96 was a year general McGrath was riding Suzuki would have been a 250 it's been the bike you was riding what do you know about Jeremy McGrath I remember he started on Yamaha I had the first water cooled Honda Cr250R talk about taking some getting used to left sidekick so yeah you kick it the same foot you shifted
BEST piece of advice to anyone with any vintage bike is to join ALL the forums/groups that you can relating to that bike. Odds are you will get to know (a) very knowledgeable people, and (b) most probably the parts you need - or a pointer in the right direction
Hi, I have a 1992 rm 125 what I have a question about if you could help me?
On the left side of the engine on the barrel, is there an overflow pipe or should that be connected up ?
I bought the bike in 3 box’s so I’m unsure of the correct way to pipe it up. Thanks Lewis.
For anyone planning on rebuilding a rm125 between 1997-2001 I would highly advise against it. I just had to give up on my total rebuild because I was sitting around about 3 grand, not including the bike. Parts for these bike are extremely hard to come by and expensive. Just in bearings alone I spent near 200 dollars. You will be doing allot of guess work. With allot of parts being discontinued like the crank which leaves you at the mercy of old diagrams, eBay and machine shops to help rebuild. The final nail in the coffin for me was a incorrect sized transmission bearing that cracked the case. While I could have probably caught this error it’s probably not something that would have happened if I didn’t have to do all the guess work. In the end you will save more paying a bit more for a bike that had a better aftermarket and more accessible rebuild kits and parts
Make new gasket from 30 pack box. Wipe used black motor oil on case place case on cardboard. Now you have outline of case. Punch all holes first can use proper 1/4 drive socket with extention to punch holes. Place card board over metal plate use socket and hammer to punch holes. Then cut remaining cardboard with scissors and or utility knife. Whalah new gasket!
i had one of these but it was an older version, way back in the late 80s and my god it was quick , well it was for the time.
Nice rebuildt, but if I were you, I would change my gloves when luring up the piston and cylinder.. That way you don't get any fragments that can wear out the engine faster.. It should all be 100% clean when installing..
Seems to be a lot of people coming here to give instructions, or supervise your videos, but thats expected. I learned alot from reading and listening to other people, and now from videos on the internet. I learned only a few knew what they were talking about, the rest were either guessing trying to impress you, or just fos.
I'm 63, and still dont understand how you can talk into a flat plastic object, and hear someone talk back over a mile away , much less from the other side of the planet. Never did beleive in magic, but I'm beginning to. Being young... I didn't know then, maybe that was magic too. I'm gonna race motocross anyway !
Tightens puller all the way, then wonders why crank won't spin lol good video tho 💯💯
WOT on initial startup- no bueno. Turn the gas on, lean bike over until gas runs out overflow tube, pull choke on, kick over WITHOUT opening throttle - will fire right up.
Do you happen to have another clutch side casing for this bike for sale anywhere? Like the whole main case that would hold the propeller and kick starter minus the actual clutch/clutch basket cover.
I had broke the lip that holds the 2 bearings behind the water pump propeller last night lol so now the bearings just fall through. They have a brand new one for 350.00 on eBay not too bad just looking for cheaper options 😂
Jesus Christ I can’t believe you smashed those new bearings in like that 🤦♂️ needs to much hotter - blowtorch
That clutch basket is ruined my friend. The grooves on the inside of the teeth are from the clutch plates beating on the metal. Even if you replace the clutch plates those grooves will make bad resting points for them and cause unnecessary wear and tear
I wasted years kicking reluctant Villiers based strokers into life and more than one meeting without a ride .At this time (about 1974),I visited a friend who owned a Greeves 250 Challenger and while chatting to me idly eased the kickstart down and the engine just quietly started running.By the way his bike was cold and hasnt been used for over a week.Same with model diesel engines that could be hard to start in the days before electric starters,when anyMills ,75 would always start in any direction too!
Anybidy else notice the arincin 650, I'm mad and jealous at the same time, ots literally my dream bike, and ik he got it for a steal somehow........ 😔
lol i have this bike i just bought a showe crankcase gasket for 30$ cad. that gasket will leak like crazy if the bikes actually used its destroyed and youre dealing with old cast cses they suck a sealing regardless. 96 isnt that bad but still. hack job on a nice bike. even if youre sjust selling that its a dick move because youll say its been rebuilt but the next guy is going to be splitting those cases regardless to replace that gasket. if you can, buy Showe gaskets (BLUE) theyre way better than american ones.
Well done.
Stick the bearings in the freezer if anything - Heating up expands the metal making it more difficult - Using a vice whilst placing the old bearing on the new bearing using it to press in the new one as you tight/close the vice - Anyways, reminds of a KMX 125 I bought for £600 which I repaired - Barrel re-chromed at local engineers, and I gave the bottom end to a mechanic to change the bearings.
When you heat up a bore, the diameter gets bigger, not smaller. With the case in the oven at 300 deg F., the bearing bores will grow up to about .002", and the bearings will pretty much fall out of the cases. A frozen steel bearing is about .0001" smaller in diameter, (about 1/20th the thermal expansion rate of aluminum), so the difference in that diameter for temp differences is very small. The problem I have with a frozen bearing, is it getting suck a bit crooked because the cold bearing sucks the heat out of the cases, and the case bore shrinks on a slightly crooked bearing. Today, I use heat to remove them, and a arbor press to put them together all at room temp. I got tired of burning my fingers trying to drop a bearing straight into hot cases.
@@EarthSurferUSA ok thanks, didn’t know that.
I love the way people make stupid comments about some of your methods not going by the book. Know what I think? If they already know everything about rebuilding one of these machines, this video was never meant for them in the first place. These videos are meant to help the average Joe, not the average A-hole know-it-all. Just my 2 cents.