3) General Discussions.. No problems but would like to discuss your Chinese quad experiences post in here.. You can also post in here why you hate your Chinese quad..

chinese engines

Old 02-11-2019, 02:57 PM
Weekend Warrior
Thread Starter
Join Date: Jan 2019
Posts: 17
Default chinese engines

So I have a few Chinese brand engines laying around. I did some measuring and have decided that it appears the cases are the same dimension between the 50cc, 70cc, and 110cc (Head bolt pattern, case width, etc.) I am assuming that the only real difference between any of them is the bore and stroke. So I was thinking of trying to take the crank, connecting rod, piston, jug, and head from a 110cc and putting them into a 70cc that has a 4 speed trans. Has anyone here attempted anything like this or know if there are any other differences in the internals that I am unaware of? I have a 70cc dirt bike that I want to turn into a 110cc but I don't have a 110cc with a trans that would work in a dirt bike, mainly cause I don't want reverse on it. I am not afraid of tearing these engines apart and reassembling them in a Frankenstein fashion.
Old 02-12-2019, 02:30 AM
Extreme Pro Rider
Join Date: Oct 2013
Location: Lancaster England
Posts: 3,730

Be careful, they may look the same, but often have slight differences. I needed a starter motor for one a while back and noticed those sold for 70s were different to those for 110s. On examination of the on-line sellers dimensions, the hole centres for mounting bolts were different.
Old 02-12-2019, 07:39 AM
Weekend Warrior
Thread Starter
Join Date: Jan 2019
Posts: 17

Thanks! Yeah I figured there might be a few subtle differences but the cases seem to have the same bolt pattern. I should probably take pictures and video for documentation purposes.
Related Topics
Thread Starter
Last Post
03-12-2018 06:18 PM
1) Engine problems..
01-21-2011 11:40 AM
Kids Quads
01-04-2009 04:52 PM
General RUV / UTV Discussion
10-24-2008 08:45 PM
Utility ATVs
12-20-2007 08:55 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Search this Thread
Quick Reply: chinese engines

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: