big bore jetting?

[freundly]

In the process of putting in a dratv 105 kit with 11:1 piston, uni filter, mild cam & Big Gun exhaust. It was completely stock before & has stock carb wtih stock jetting in it now. Any suggestions on where to start with jetting? Main? Pilot? Needle?

[freundly]

Surely somebody on here has an idea of where to start at least? My kid's chomping at the bit to ride, so guess I'll just wing it & start with a 90 main. Stock one is an 80...

[miniquaddad90]

http://www.powroll.com/PDF/2007%20-%20NEW/JETTING/JETTING-HONDA-TRX90-THRU2005.pdf

or for 2006 & up

http://www.powroll.com/P_HONDA_TRX90.htm#CARBURETION

[freundly]

Thanks for the links! Good information.

[McQuad Rider]

DRATV has a "Richer Slide Assembly" that works well and I have jetted our 90 up to a 100 main jet with no issues at sea level. We also took about 30 thousandths out the carb venturi as well. Enjoy!

[miniquaddad90]

You can also eliminate the choke buterfly too. Just like the CRF50/70