I just want to build one fast enough to make me crap in my breeches on the tail of the dragon. They have a two stroke meet up in February each year and it's a bunch of retro motorcycles. Although I'd love to have a Yamaha RD to show up with, I also wouldn't mind to show up on a Felt faker that can hit 70mph rapidly 😂😂. Wish me luck.
Help please! I got a Athena 70cc sport cylinder paired with a ZL40 Rod. The trouble I’m having is that the wrist pin is larger than my wrist pin bearing. I’m not sure if I ordered the wrong size. My wrist pin is 12mm. If I get a larger wrist pin bearing I’m, I’m not sure it’s going to fit into the rod hole. If anyone has any insight I would appreciate it.
What about all the car engines that use iron sleeves and aluminum pistons? My GSR motor in my '98 turbo Civic has aftermarket cast iron sleeves, and 2618 aluminum pistons. All that needs to be done is proper piston-to-wall clearance. In my case, I have an 81.5mm bore, and that clearance I like is 4 thou.
You know what a redline is then and a transmission correct? Since we are talking cars. Minarelli vertical engine was designed to work with a CVT transmission on a moped. Redline for a minarelli is 6500rpms. When you blast it doing 10,000 rpms to make a 1 speed bicycle do 55mph. Whole a different story and thermal dynamics of two metals don't play well when expanding. To answer your question (sleeved) aluminum blocks can dissipate heat closer to pistons expansion rates than a cast iron block can. Furter that! Steel sleeve in a super high end build has titanium 3 to 5% mixed in so the steel expands farter then the aluminum lol. Been building engines for years man lol swear to God if you look up all that you will find it repeatedly preached by many builders of All kinds of engines. Supercross dirt bikes to NASCAR
I really do like watching your videos and I’ve even learned from them. I have a 2001 Yamaha vino scooter and I put a polini contessa sport top end on it, runs great with quite a bit of power, the thing screams! I’m running stock roller weights and it has good torque and when it hits the power band it really starts moving. I personally prefer iron jugs because I feel they last longer. I like to run my engines on the rich side and not for absolute peak performance, but I definitely don’t run it wide open for long periods of time but I never do that not even on a aluminum jug bicycle engine. From what i understand 2 strokes clean out the case and don’t have as much lubricant when you are turning them wide open, all that rpm,heat and less lube sounds like a disaster waiting to happen (why I run on the rich side) I run castor oil for its superior film strength and its lean run properties of becoming a grease like lube when it gets very hot, of course the scooters have a fan and I think it might survive at high rpm’s for a bit with my tuning and setup BUT I am not going to test that, 1 it was not a cheap top end and 2 I like my stuff to last.
I really wish I woulda done my research before I bought.i literally trusted a friend that knew Kurt Smolik so I assumed he would get me a good one from him.nope I paid $400 for just the engine,then another $100 for him to weld up my pipe and he loaned me a head,gave me the wrong plug to start,the crank slid side to side,ruined my magnito and stripped the magnet bolt on and I can’t even get it off to try n fix the issue.now I gotta scrap that bottom end and start over.i have another bottom end to use.can u tell me for sure is it long rod or short?it looks long.anyway thanks for all the info man
@@davechap7819 almost positive it will be a (long rod) only very few builds use short rods. Like 2. Do you mean stroke length? When in doubt! Go for 40mm stroke. 10mm spacer. If you have a 38mn stroke it's a 8mm spacer . Start standing lol. 400 grit works perfectly start to finish. If you have a short rod it's 88mm center to center of its holes. If you have a long rod 115mm center to center of its holes. Sholes be easy enough to eye with a metric 📏. Hope that helps some! Edit if you have short rod no go on the minirelli build! Needs to be a long rod crank! Not unsave able. Just needs a crank swap. Lots of elbow grease
Not the reason! Saw builds are more low end! 1.8mm squish. Minarelli is .70 squish! lower squish more RPMS! But just add pop up piston to saw and minarelli can't even come close to saw build! 85cc Piaggio case reed build my friend has out of the gate is in dust LOL add a reed block to saw its a chain breaker!
@@BuildBreakFix im sorry but a well built Athena cylinder Thats ported can make 15hp and they race them in SoCal. Notice how no saws race in cali anymore? Don’t take it to heart im just sharing what I’ve seen man
@@keeganhache6667 yeh , but athena cylinder kit price is like about 4 times what a saw cylinder kit cost , and with the athena you need to add the reed valve cost wich is also a nice dime if you want to put some nice carbon fiber reed so for me a athena build is wat out of my budget who knows what can you do with a saw jug with the same buget you know what I mean ?
This is a Athena topends. Still 47mm but made out of aluminum. Not cast iron. If you make a minarelli these aluminum jugs are worth every penny you spend more. By the time cast iron jugs die over and over from cold seizure. You spent just as much anyways
Minarelli is great! Just buy a Athena sport top end. Smolik has nice conversation parts. Just stay away from cast iron! Aluminum top ends are great on motorized bicycle
I keep seeing this "cold seize" being used as if it's a real issue. A warmed up engine does not cold seize unless there is something else going on. Cast iron jugs have been around a LONG time now, and the only "cold seized" engine I ever saw were run too hard upon startup, without letting engine come up to temp. Kinda sounds to me like you just have an axe to grind and want to shit on Minarellis. If the problem was as widespread as you claim, MANY others would have had this problem by now. Sounds like advertising to promote saws over someone else's kits to me.
You have no idea what your talking about! Nor do you understand basic reason it happens clearly. you know I sell Minarelli Engines as well right? Just not crap builds like you find on ebay people get screwed over. Bro there a reason people drop 1000$ on minarelli build. Sure cast iron jugs have been around for years. They also are not going 12,000 RPM at 485F+ degree temps. (The Cast iron jugs are used with Transmission) (Called thermal dynamics) aluminum will always expand before steel faster! They last longer and have lower wear rates for there correct use. But they also don't go over 7k rpms for more then few seconds till transmission kicks in normally run at 4-5k rpms on a moped. Idiots that mount one on a bicycle engine have no transmissions. So they run it at 8k+ rpms and they cold seizure. But hey only built 478 of them now. And have lots of videos in great detail how to build one! BUT! Be my guess when you build it and you waste your cash on Cast iron jug come back see me and i'll tell you how to fix it for another 500$ on top of the 500$ you just spent buying a 90$ piece of crap anyone can buy off aliexpress! TO back up my claims! I Offred $200 to any person to ride a cast iron Minarelli jug @ 40MPH for 40 SECONDS on live stream 5 months ago when I posted this video! Which is not even close to max speeds! Not one person out of 78 People did it and 6 trashed there engines trying. so your more then welcome to add yours to the list of shame!
@@BuildBreakFix As far as my experience, yeah I'd say about 45 years of two strokes and race engines makes me qualified to speak on the subject. You clearly have some agenda and an axe to grind with Minarelli builds. Saying stuff like this only makes you look foolish to the experienced builders out here. Stick with your saw builds and stop trying to sound like an expert. Maybe building 500 more will teach you something.
@@ManiacRacing are you just retarded? It's a common problem learn wtf your talking about. Go troll some other place. You clearly are very confused. Considering everyone but you seems to understand the issue try simple google search.
@@ManiacRacing really so you started building engines when your 5 years old lol dude go bull shit some other place. Done wasting time on you lol what moron
You're joking right? I would hope so for your sake. You obviously don't know my channel or the fact I'm rated one of the top 5 builders and sellers then for custom engines 😆
@@BuildBreakFix if you are talking down about the Minarelli compared to other bicycle engines. You are lost and misleading alot of people. Maybe you are with bikeberry BS
You really are a moron 😆 you clearly never watched the video. All you're doing is trolling. I sell minirelli engines why would I do anything your rambling on and on about. You just look foolish at this point. You clearly don't understand there is shit kits people get fucked on like eBay bike berry. Then there were well made kits like smolik makes for same price. You may need some of those special ED classes in school and a helmet for more than just riding a bike...
You seem to know what you're talking about but then call every build that isn't a DIY CNC motor from a saw crap. Everything can't be crap because I've seen people on $150-200 motors doing decent speeds and long distances.
Are you talking about cast iron jugs? Lol buy one. Go 45mph more than 45seconds and I'll pay you 100$ cash uncut live TH-cam video. It's impossible to achieve without a cold seizure. This video was about cheap cast iron minirelli jugs.
for one that is not pure garbage yeah 325ish now adays. Back when video came out was about that. half those black coated knock offs are pure trash for like 200$
@@BuildBreakFixThis stage 6 70cc aluminum cylinder costs ≈180-200€ in Europe, I don't understand how it can be resold for 400$. This sale is simply a scam. 400$this is the price of the cylinder kit with the exhaust and the carburetor
@@elodiie5430 47mm *77cc* is actually about 350$ "at the time the video was made'. Almost a year old. Currently 260$ for 47mm in states. Should of said it as a complete top end. Reed, head, jug, reed cage, gaskets and piston.
@@BuildBreakFix Wow it's really very very expensive I think, the importers must add the tax and a comfortable margin I think 😓 Here it is very common and the price is not as expensive, many young people ride with this kind of cylinder daily with mopeds
Tell me why a saw didn't win at SoCal then. Tell me why a Minarelli did. Was there even a saw in the top 5? No I don't think so. Because you are wrong.
really? resously going to go there with me toe to toe with response like that? When the top builders agree with me even that sell them? you must of not seen much of my channel then.... You may want to reconsider that random thought you openly made in a dumass fashion without knowing what i do and what i done for last 35 years first. this my hobby. your more then welcome to check out my other channels only been on 12 other youtube channels even helping people with other builds of there's funny little millennial!
@@BuildBreakFix also wtf are you on about? You’re a millennial too no mind, you don’t sound much older than 35. Unless you’re 42 quit trying to sound like a know it all boomer. You’re not it.
I just want to build one fast enough to make me crap in my breeches on the tail of the dragon. They have a two stroke meet up in February each year and it's a bunch of retro motorcycles. Although I'd love to have a Yamaha RD to show up with, I also wouldn't mind to show up on a Felt faker that can hit 70mph rapidly 😂😂. Wish me luck.
Lol 😆 😄
Help please! I got a Athena 70cc sport cylinder paired with a ZL40 Rod. The trouble I’m having is that the wrist pin is larger than my wrist pin bearing. I’m not sure if I ordered the wrong size. My wrist pin is 12mm. If I get a larger wrist pin bearing I’m, I’m not sure it’s going to fit into the rod hole. If anyone has any insight I would appreciate it.
I was curious have you ever done a 100cc mineralli top end on a bike engine or have u ever see one ?
Requires a piston stroke length you can't achieve in a motorized bicycle bottom end
What about all the car engines that use iron sleeves and aluminum pistons? My GSR motor in my '98 turbo Civic has aftermarket cast iron sleeves, and 2618 aluminum pistons. All that needs to be done is proper piston-to-wall clearance. In my case, I have an 81.5mm bore, and that clearance I like is 4 thou.
You know what a redline is then and a transmission correct? Since we are talking cars. Minarelli vertical engine was designed to work with a CVT transmission on a moped. Redline for a minarelli is 6500rpms. When you blast it doing 10,000 rpms to make a 1 speed bicycle do 55mph. Whole a different story and thermal dynamics of two metals don't play well when expanding. To answer your question (sleeved) aluminum blocks can dissipate heat closer to pistons expansion rates than a cast iron block can. Furter that! Steel sleeve in a super high end build has titanium 3 to 5% mixed in so the steel expands farter then the aluminum lol. Been building engines for years man lol swear to God if you look up all that you will find it repeatedly preached by many builders of All kinds of engines. Supercross dirt bikes to NASCAR
I really do like watching your videos and I’ve even learned from them.
I have a 2001 Yamaha vino scooter and I put a polini contessa sport top end on it, runs great with quite a bit of power, the thing screams!
I’m running stock roller weights and it has good torque and when it hits the power band it really starts moving.
I personally prefer iron jugs because I feel they last longer.
I like to run my engines on the rich side and not for absolute peak performance, but I definitely don’t run it wide open for long periods of time but I never do that not even on a aluminum jug bicycle engine.
From what i understand 2 strokes clean out the case and don’t have as much lubricant when you are turning them wide open, all that rpm,heat and less lube sounds like a disaster waiting to happen (why I run on the rich side)
I run castor oil for its superior film strength and its lean run properties of becoming a grease like lube when it gets very hot, of course the scooters have a fan and I think it might survive at high rpm’s for a bit with my tuning and setup BUT I am not going to test that, 1 it was not a cheap top end and 2 I like my stuff to last.
One day I might buy an old Italian scooter and restore it for fun 😜 I'm glad some stuff helped on my channel 👍
I really wish I woulda done my research before I bought.i literally trusted a friend that knew Kurt Smolik so I assumed he would get me a good one from him.nope I paid $400 for just the engine,then another $100 for him to weld up my pipe and he loaned me a head,gave me the wrong plug to start,the crank slid side to side,ruined my magnito and stripped the magnet bolt on and I can’t even get it off to try n fix the issue.now I gotta scrap that bottom end and start over.i have another bottom end to use.can u tell me for sure is it long rod or short?it looks long.anyway thanks for all the info man
@@davechap7819 almost positive it will be a (long rod) only very few builds use short rods. Like 2. Do you mean stroke length? When in doubt! Go for 40mm stroke. 10mm spacer. If you have a 38mn stroke it's a 8mm spacer . Start standing lol. 400 grit works perfectly start to finish. If you have a short rod it's 88mm center to center of its holes. If you have a long rod 115mm center to center of its holes. Sholes be easy enough to eye with a metric 📏. Hope that helps some! Edit if you have short rod no go on the minirelli build! Needs to be a long rod crank! Not unsave able. Just needs a crank swap. Lots of elbow grease
Thanks
🍺😜👍
It’s kinda sad tho how a saw needs to have 30 more cc’s just to keep up with a scooter cylinder lol
Not the reason! Saw builds are more low end! 1.8mm squish. Minarelli is .70 squish! lower squish more RPMS! But just add pop up piston to saw and minarelli can't even come close to saw build! 85cc Piaggio case reed build my friend has out of the gate is in dust LOL add a reed block to saw its a chain breaker!
@@BuildBreakFix im sorry but a well built Athena cylinder Thats ported can make 15hp and they race them in SoCal. Notice how no saws race in cali anymore? Don’t take it to heart im just sharing what I’ve seen man
@@keeganhache6667 yeh , but athena cylinder kit price is like about 4 times what a saw cylinder kit cost , and with the athena you need to add the reed valve cost wich is also a nice dime if you want to put some nice carbon fiber reed so for me a athena build is wat out of my budget who knows what can you do with a saw jug with the same buget you know what I mean ?
I want a chain snapping hi yo silver build
Will rip tires off the rims! 🤣 th-cam.com/video/fvDZe3VqyjE/w-d-xo.htmlsi=34oedXGx11oe9ylS
Which is that bigger piston
This is a Athena topends. Still 47mm but made out of aluminum. Not cast iron. If you make a minarelli these aluminum jugs are worth every penny you spend more. By the time cast iron jugs die over and over from cold seizure. You spent just as much anyways
Where can you buy a mz65 pipe from ?
Ebay
Just type mz65 bunch come up. Save cash buy "nasty jack pipe" same pipe just different name!
What about the $199 California motorbike minarelli?
Couldn't tell yeah. I haven't seen any of their stuff before in person.
That is the one I'm getting next.
Have never had any issues with both of my minerallis lol
Well they for sure are not running over 6k Rpms then. 👍
Well over 50 mph never have had any issues and will turn well over 6000 ur obviously not to intelligent
Bring ur saw here and I’ll quick smoke ur ass
So I would come out better if I spent money on a saw build instead of the 400$ Minarelli kit on go max for my v2 frame main focus being speed
Minarelli is great! Just buy a Athena sport top end. Smolik has nice conversation parts. Just stay away from cast iron! Aluminum top ends are great on motorized bicycle
cilinder from mbk booster of yamaha boooster
Mine? Was from a vertical minarelli * aftermarket part.
I keep seeing this "cold seize" being used as if it's a real issue. A warmed up engine does not cold seize unless there is something else going on. Cast iron jugs have been around a LONG time now, and the only "cold seized" engine I ever saw were run too hard upon startup, without letting engine come up to temp. Kinda sounds to me like you just have an axe to grind and want to shit on Minarellis. If the problem was as widespread as you claim, MANY others would have had this problem by now. Sounds like advertising to promote saws over someone else's kits to me.
You have no idea what your talking about! Nor do you understand basic reason it happens clearly. you know I sell Minarelli Engines as well right? Just not crap builds like you find on ebay people get screwed over. Bro there a reason people drop 1000$ on minarelli build. Sure cast iron jugs have been around for years. They also are not going 12,000 RPM at 485F+ degree temps. (The Cast iron jugs are used with Transmission) (Called thermal dynamics) aluminum will always expand before steel faster! They last longer and have lower wear rates for there correct use. But they also don't go over 7k rpms for more then few seconds till transmission kicks in normally run at 4-5k rpms on a moped. Idiots that mount one on a bicycle engine have no transmissions. So they run it at 8k+ rpms and they cold seizure. But hey only built 478 of them now. And have lots of videos in great detail how to build one! BUT! Be my guess when you build it and you waste your cash on Cast iron jug come back see me and i'll tell you how to fix it for another 500$ on top of the 500$ you just spent buying a 90$ piece of crap anyone can buy off aliexpress!
TO back up my claims! I Offred $200 to any person to ride a cast iron Minarelli jug @ 40MPH for 40 SECONDS on live stream 5 months ago when I posted this video! Which is not even close to max speeds! Not one person out of 78 People did it and 6 trashed there engines trying. so your more then welcome to add yours to the list of shame!
@@BuildBreakFix As far as my experience, yeah I'd say about 45 years of two strokes and race engines makes me qualified to speak on the subject. You clearly have some agenda and an axe to grind with Minarelli builds. Saying stuff like this only makes you look foolish to the experienced builders out here. Stick with your saw builds and stop trying to sound like an expert. Maybe building 500 more will teach you something.
@@ManiacRacing are you just retarded? It's a common problem learn wtf your talking about. Go troll some other place. You clearly are very confused. Considering everyone but you seems to understand the issue try simple google search.
@@ManiacRacing really so you started building engines when your 5 years old lol dude go bull shit some other place. Done wasting time on you lol what moron
No wonder I never heard of you before I stumbled across this video.
You just need some experience as a mechanic kiddo.
You're joking right? I would hope so for your sake. You obviously don't know my channel or the fact I'm rated one of the top 5 builders and sellers then for custom engines 😆
@@BuildBreakFix if you are talking down about the Minarelli compared to other bicycle engines. You are lost and misleading alot of people. Maybe you are with bikeberry BS
You really are a moron 😆 you clearly never watched the video. All you're doing is trolling. I sell minirelli engines why would I do anything your rambling on and on about. You just look foolish at this point. You clearly don't understand there is shit kits people get fucked on like eBay bike berry. Then there were well made kits like smolik makes for same price. You may need some of those special ED classes in school and a helmet for more than just riding a bike...
400$?! For the jug??? Wtf is the point??? For the price of that jug I can have my entire avenger build AND outrun it!
You seem to know what you're talking about but then call every build that isn't a DIY CNC motor from a saw crap. Everything can't be crap because I've seen people on $150-200 motors doing decent speeds and long distances.
Are you talking about cast iron jugs? Lol buy one. Go 45mph more than 45seconds and I'll pay you 100$ cash uncut live TH-cam video. It's impossible to achieve without a cold seizure. This video was about cheap cast iron minirelli jugs.
So, where does one buy a saw build?
Yes, I'm brand new to this hobby, and I'm finding myself at a dead-end when it comes who makes the best.
😂 $400 stage 6 cylinder...stop it
for one that is not pure garbage yeah 325ish now adays. Back when video came out was about that. half those black coated knock offs are pure trash for like 200$
@@BuildBreakFixThis stage 6 70cc aluminum cylinder costs ≈180-200€ in Europe, I don't understand how it can be resold for 400$. This sale is simply a scam. 400$this is the price of the cylinder kit with the exhaust and the carburetor
@@elodiie5430 47mm *77cc* is actually about 350$ "at the time the video was made'. Almost a year old. Currently 260$ for 47mm in states. Should of said it as a complete top end. Reed, head, jug, reed cage, gaskets and piston.
@@BuildBreakFix Wow it's really very very expensive I think, the importers must add the tax and a comfortable margin I think 😓 Here it is very common and the price is not as expensive, many young people ride with this kind of cylinder daily with mopeds
Tell me why a saw didn't win at SoCal then. Tell me why a Minarelli did. Was there even a saw in the top 5? No I don't think so. Because you are wrong.
Lol? You realize top end of that minarelli had $3,400 of parts work put into it right lol?
There weren't ANY saws at So-cal.
Skill issue buddy/
really? resously going to go there with me toe to toe with response like that? When the top builders agree with me even that sell them? you must of not seen much of my channel then.... You may want to reconsider that random thought you openly made in a dumass fashion without knowing what i do and what i done for last 35 years first. this my hobby. your more then welcome to check out my other channels only been on 12 other youtube channels even helping people with other builds of there's funny little millennial!
@@BuildBreakFix wouldn’t waste my time. You can’t be much of anything if you’re responding to me.
@@BuildBreakFix also wtf are you on about? You’re a millennial too no mind, you don’t sound much older than 35. Unless you’re 42 quit trying to sound like a know it all boomer. You’re not it.