PDA

View Full Version : ATC 70 with 88cc kit - jetting suggestions



t0i90
04-01-2019, 10:32 AM
Guys; I'm inquiring if anyone knows the correct jets to use with an 88cc kit and maybe where to get them?

Thanks again for all the help.

jb2wheels
04-02-2019, 10:28 AM
It's been a while but, a few years back, I put an 88 piston/cylinder kit on a TRX70.

The TReX was smoking when I got it, so I installed the $100 big bore kit and lapped the valves. If it had any valve seals I replaced them.
I left everything else stock - airbox, carb, pipe, head, cam, etc.

I bumped the main jet up 1 size and it ran fine. I fiddled with idle mixture and speed as needed. I never did a plug chop or anything to test it because I only used it as a potty quad - ride up to the showers/potty when camping.

I was very happy with this setup - it was quiet and hauled me around with no issues.

I get jets here: Jets_R_Us (http://www.jetsrus.com/a_jet_kit_atv/honda_070_ATC70.htm)

If you're paying for shipping, might as well get a couple of pilot and main jets slightly bigger than stock.