Jump to content
Sign in to follow this  

450R Jetting

Recommended Posts

Burned, please help...bought a '04 450R from a friend in K.C. need to rejet for Colorado (Denver area) altitude, bike has twin air filter, FMF pipe. It had a 170 main, 3rd clip position, and about 1 turn out on pilot screw...I changed to factory recommendations of 160, 4th pos, 1-1/4 turns out and it seems to be too lean, what would you recommend for a good place to start?

Share this post


Link to post
Share on other sites

i used to have a 04 450r it was a :banghead: to jet right seemed like a few degrees would throw it off..good luck..i now have a 05 250r love it

Share this post


Link to post
Share on other sites
Burned, please help...bought a '04 450R from a friend in K.C. need to rejet for Colorado (Denver area) altitude, bike has twin air filter, FMF pipe. It had a 170 main, 3rd clip position, and about 1 turn out on pilot screw...I changed to factory recommendations of 160, 4th pos, 1-1/4 turns out and it seems to be too lean, what would you recommend for a good place to start?

what makes you think its lean?your pretty close.you could even be at a 155-158.

Share this post


Link to post
Share on other sites

Engine smells hot after 15mins or so on the track, I have not pulled spark plug yet to look at it, but before I changed jets I replaced the spark plug (it was kinda black looking) It does seem to run o.k. I am not that experienced of a rider to notice small changes in power, but would like to make sure that I am close to proper jetting.

Share this post


Link to post
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:

Sign in to follow this  

×
×
  • Create New...