atc 70 motor

[fannitti]

wanna keep a honda not aftermarket. whats the biggest i can do and can i only do a 88bb to my stock 70 motor? will any other trx or atc motos bolt or fit in?

[KASEY]

if you want to bore your cases you can go to 95cc.. i have one setting on the bench . picts tonight

[fannitti]

More info please with pics thanks

[fannitti]

What about a direct honda motor replacement any other atc or trx motor direct fit in?

[Jon Boy]

i posted about this in Defender86's thread by mistake, but anyway i think the 125 is the biggest oem stocker that can fit (basicly 90, 110 and 125 are the same motor), but not positive though on how well it swaps in. i have never done it. suprised more 70 owners haven't chimed in. :wondering

sidenote: i keep hearing/reading that those lifans are pretty much level with the these old Honda motors. maybe better with parts being more readily available i would imagine.

[fannitti]

I know im looking to do a bolt in motr oem style upgrade

[Blown 331]

if you want to bore your cases you can go to 95cc.. i have one setting on the bench . picts tonight

Same here. Ive got a 1971 SL70 that lost 3rd gear. While I split the cases I bored the case and bought a 95cc kit. I'm not done with it yet.
I've also got a 110cc 2000 Z50 (not Chinese). This thing totally rips. I've dusted 2 different XR100's with it.
And I also put an 88cc kit on a 1975 XL70. Its stock under that and I gotta say I'm pretty impressed with just an 88cc kit. But an XL does have better ignition, carb, exhaust, head and cam vs an ATC70.

[fannitti]

You telling me of stuff u got for sale u got pics and what not?

[Blown 331]

You telling me of stuff u got for sale u got pics and what not?

My stuff is not for sale. I was just telling you some different CC options I have done with a Honda 70 and my review on them. Isn't that what you wanted to know.

[fannitti]

Yea all those motor will bolt in to a atc 70 for sure no extra drilling and such?

[Blown 331]

Yea all those motor will bolt in to a atc 70 for sure no extra drilling and such?

What I was suggesting was not swapping a motor at all but doing some mods to your existing engine. There are no other Honda engines that will just bolt in other than another 70 or 50.
You can buy an 88cc big bore which incudes a cylinder, piston, pin, rings and gaskets for like $110. www.dratv.com

[fannitti]

My buddy has a 88cc kit came with a cyl head also. Someone told me a trx 90 motor will bolt in. But i donno

[Blown 331]

I'm not real familiar with the TRX90 engine but I think there would be other complications with that swap such as electronic ignition and electric start. It would be a lot easier to stick with your ATC70 engine and adding a $110 big bore.

[fannitti]

04 and under are still pull start

[fannitti]

i posted a add on craigslist looking for trx 90 motor and a guy called me on it says he used to race and be sponcered by companys and has all race and stock parts for trx 90 motors stock cranks and stroker cranks cut fly wheels and everything. so im saying this so if anyone wants to get parts or race parts for trx 90 stuff let me know ill get his email out to you?

[oldtime3wheeler]

My buddy put an atc110 motor in his 70. Needed a little fab work, but it wasnt that hard, The bike rips.

[briano]

The trx90 motor fits in a 70 frame. The atc110 motor is not to hard to make it fit, but the best bang for your buck is going to be an aftermarket engine

[KASEY]

get his email.. i am interested.......................

[fannitti]

I was told by the guys at hondatc70.com that just a stock bottom end of a trx90 will fit and there 114 bb on it and your golder an entire motor from a trx 90 wouldnt.