PDA

View Full Version : Jetting a TRX90



Pappy
05-19-2004, 08:01 AM
Big Gun race series....stock engine. Whats everyone running for jetting?

212racing
05-19-2004, 06:01 PM
if you go with a uni filter then i would say a 83 jet, that will get you close then you can click the needle up or down to fine tune

AtvMxRider
05-19-2004, 06:04 PM
If I'm not mistaken Ken we are running a 90. We have a R4 with a K&N and open air box.

Pappy
05-19-2004, 06:07 PM
after a few laps the stock jetting seems fine. plug is dark and no popping

212racing
05-19-2004, 10:29 PM
i think the 90 would be to rich, we run a fuel pump,big cam, 89cc,a lot of compression,etc..... and now just jetted to a 90, but each area is different,altitude,temp,barometer,etc... when we had the set-up you have it was a 83 or 85, i dont know what the other guy is running so i am not saying he is wrong. just telling you what we had run.

AtvMxRider
05-20-2004, 01:31 PM
Originally posted by 212racing
i think the 90 would be to rich, we run a fuel pump,big cam, 89cc,a lot of compression,etc..... and now just jetted to a 90, but each area is different,altitude,temp,barometer,etc... when we had the set-up you have it was a 83 or 85, i dont know what the other guy is running so i am not saying he is wrong. just telling you what we had run.

It's either an 85 or a 90 I can't remember.

Sportrax90A
07-24-2005, 08:56 AM
How do you change the jetting to a specific #?