Go Back   ATVConnection.com ATV Enthusiast Community » General Discussion » Performance Mods and Project Quads
Sign in using an external account
Register Forgot Password?

Welcome to ATVConnection Forums!
Welcome to ATVConnection.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the ATVConnection Forums community today!

Old 02-07-2007, 07:32 PM
Weekend Warrior
Garage is empty, add now
Join Date: Feb 2007
Posts: 1
Default 1987 TRX250R Jetting Question

Hello Everybody:

I am new to making repairs to Hondas, I need your help on trying to find a starting point for my jetting. I'm getting my 250R bored out alittle, my old piston and rings took a turn for the worst. Doing this project before going to Glamis.

The only place I go riding is at Glamis (Imperial Sand Dunes) and the following is what I have on my bike.

FmF SST gold series exhaust
stock carb
will have a new piston at 67.5
boyseen power reeds

If I need to post more information please let me know. PLease help me on a starting point for my jetting.

Reply With Quote
Old 02-08-2007, 12:33 AM
Pro Rider
Garage is empty, add now
Join Date: Nov 2006
Posts: 469
Default 1987 TRX250R Jetting Question

I dont know what size to start at but I always like to start with a jet that is likely to big then go down on jet size.You dont want to lean it out with to small of a jet.If all you have done is bored it out and put in new piston in it then I wouldnt go up on jetting to much.If you have rebuilt it,put your pipe on and put your reeds in then yeah I would go up several sizes.I guess what I am saying is that just boring it isnt going to change it much.Wish I could give you some numbers.
Reply With Quote
Old 02-09-2007, 08:44 PM
Pro Rider
Garage is empty, add now
Join Date: Dec 2004
Posts: 334
Default 1987 TRX250R Jetting Question

What kind of air filter setup?. i running pretty simialr to you. i think I have a 150main, but will check tomorrow for sure
Reply With Quote
Old 02-09-2007, 08:44 PM

1987, 250, 250r, 87, carb, dg, fmf, glamis, honda, jetting, pipe, sst, stock, trx, trx250r, tx250r

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On