WE FIXED IT!!! QT50 Full Engine Rebuild! YAMAHABROS!
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- Опубликовано: 6 сен 2024
- The Yamahabros! Do a full rebuild on the QT 50cc engine. Watch as we bring this neglected engine back to new! We got lots of parts and we get some help from Pops!! Thanks for watching!
I have never seen anyone beat a bearing in with a hammer like that. Always used a socket or pipe that fit the outer race to get even pressure on it. Other than that nice video.
Thanks, usually I press them in with an Arbor press, but I was at home and in this case used a Brass hammer and brass punch. They set with very little force, no harm done!
its hasmmer tiime ... goodbye geometry
Great video, thanks. I do have a question. Does the crank bearing on the right side of the engine run in trans oil? I couldn't really tell in the video.
Thanks for watching. Crank bearings on most all 2 stroke engines are lubricated with the fuel/oil either premix or oil injected. Not part of the transmission or clutch oil.
@@YamahaBros Thank you for your prompt reply. I have several Puch mopeds, and the E50 engine does run the crank bearing in the oil for the centrifugal clutch on the right side of the engine. The crank seal is then placed inboard of the bearing. The crank bearing on the other end of the crank does indeed run in the fuel/oil mix. Just wondering if Yamaha did the same thing on the QT50. I have 4 yamahoppers, one engine needs crank bearings. Thank you again.
WOW! Great work guys that's going to be a clean bike!
That's the plan!
Where can I get the rebuilt kit for this specific motor? Thanks
Good to see people still taking interest in what some people call weird small engine repair, but theses were the engines that paved the way for a-lot of what we have today, technology by far has taken the way but quality and simplicity has never been able to compete with today’s trash
Can I ask what you replaced and the cost estimate? I’m trying to do the same to my grandparents. They have two of them I’m trying to do a whole rebuild on them. Thanks in advance!
These machines are a blast!! We ride them to work everyday. I would recommend trying to get them running as-is. You can use a compression gauge to check if the top end is still in good shape. Otherwise the option is rebuilding with a Chinese top end kit which is not as good as OEM. The bike we rebuilt was completely destroyed, so we did crank bearings, gaskets and seals, and top end kit. Total investment around $200. Let me know if you have any more questions!
Wow! Id love to see you guys do a RT180! You guys rock YamahaBros!!
Maybe one day!
What paint did you guys use?
Rustoleum High Performance enamel.
Where did you get the top end kit/what brand was it?
Should be a niche kit, from eBay
www.ebay.com/itm/256027737652?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=pFr92mk1SsO&sssrc=2349624&ssuid=8hqCclmERCm&var=&widget_ver=artemis&media=COPY
@@YamahaBrosthat kit is very durable ive got 10k on that kit already
Hitting the center of a bearing to insert it is the worst thing!! Sloppy job!!
We used a brass hammer on the outer race. No harm done and it looks beautiful. Sloppy comment