HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
coyote222

Exhaust question

3 posts in this topic

I recently went to a desert race and noticed a lot of the WR450 riders had completely removed the insert on the exhaust. After the race, on my next ride, i thought i would try it. It seemed to have a pretty remarkable effect. Or it might be that it just sounded way better. Any comment? Will it hurt anything running without it?

Share this post


Link to post
Share on other sites

The only thing you may hurt maybe your jetting settings. You may need to go slightly richer on the needle and maybe a larger main jet. Doing some testing with different throttle openings and pulling out the plug is the only sure way to know.

Removing the insert takes away some of the stock exhaust restriction so this is a good thing. Changing your exhaust completely is even better!

Share this post


Link to post
Share on other sites

Agree with Matty. I made a replica of the standard item out of 29mmID stainless tube and a bit of 1.5mm plate - without the tube that extends forward (from the plate back only) so it screws up like the standard one and exits where it should. It just fits through the hole in the end cap and is exactly double the cross-sectional area as the standard one. I noticed the standard one is really restrictive and with the bike at idle you have trouble holding it in place due to the pressure. It must be like a peashooter when your rappin it on.

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

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0