Canit be done? My kids got a Motoss-90 which I think was made by yerf dog and I'ld like to upgrade the engine to a 110cc. 125cc or a 150cc. Has anyone done this on a 90cc frame? Are there just too many mods to make or is it just plain impossible to pull off?
It's basically a copy of this bike.

http://baltimore.craigslist.org/car/619822044.html


Thanks for you time.

jf...

 

I have a seial number on my engine (yerf dog) XF-1470111F and then under it 04041366.
Mean anything to anyone?

Thanks for you time.

jf...

 

gday , i tried to look at the pic but just got a message that the pic had been removed.... anyhow just at a guess but if its only a kids 90 from my small amount of experience with em they arent really made for modding so i would say that a 110 would probably be the one to try if your pretty lucky you might be able to do a 125 but itd be a tight fit i think

 

Here is a ATC70 with a 250R motor in it:

http://www.youtube.com/watch?v=0DSVOjk2NfA

 

<div class="FTQUOTE"><begin quote>Originally posted by: PhilMoore

Here is a ATC70 with a 250R motor in it:



http://www.youtube.com/watch?v=0DSVOjk2NfA</end quote></div>

It "goes like a missile" acording to the quote. That's the video that should have been there, not just putting around the yard.