Jump to content
Sign in to follow this  

45 Pilot to a 42?

Recommended Posts

Bike bogs at the snap of the throttle. It has a 434 kit, cams, fcr-mx (with oring and wire mod), and mrd/ssw. I am at sea level in FL. I noticed on the dyno it was super rich at idle and wouldnt die with the fuel screw turned all the way in. Will a 42 pilot be the answer?

Share this post


Link to post
Share on other sites

Bike bogs at the snap of the throttle. It has a 434 kit, cams, fcr-mx (with oring and wire mod), and mrd/ssw. I am at sea level in FL. I noticed on the dyno it was super rich at idle and wouldnt die with the fuel screw turned all the way in. Will a 42 pilot be the answer?

It wouldn't hurt to try it. Some guys have reported the need for a #42.

Share this post


Link to post
Share on other sites

Bike bogs at the snap of the throttle. It has a 434 kit, cams, fcr-mx (with oring and wire mod), and mrd/ssw. I am at sea level in FL. I noticed on the dyno it was super rich at idle and wouldnt die with the fuel screw turned all the way in. Will a 42 pilot be the answer?

 

No reaction to fuel screw = next size smaller pilot jet required

What cams, needle, clip setting and main jet.?

Open pipe.?

Share this post


Link to post
Share on other sites

You can probably kill any motor with an FCR by snapping the throttle open fast enough from an idle. Being rich on the pilot will help it to take throttle off idle. It's getting a big gulp of air and the fuel can't keep up.

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  

×