Jump to content

FCR39 3X3 Jetting


Recommended Posts

Hey Guys,

I have a 2005 drz400sm with a 3x3 mod and a fcr39 carb and is running at 300-600 feet above sea level

Recently I bought a fcr carb off a fellow TT member and changed some things up in it as far as jetting and i got the bike running good. it does have better power but it's not this super monster increase that everybody keeps commenting about. Just want to tell you what i got and see if sounds right

155 main jet

45 pilot jet

65 starter

OBDXP needle on the 3rd clip

not sure of the pilot air jet but i can find out

I definitely do want to got to a 85 starter jet for those cold starts cause it does need a little bit of throttle to start even with the choke fully on but runs great after that. I have also been thinking of a 150 main but that might make it too lean, maybe. any input would be great. Thanks

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

×
×
  • Create New...