I took out my jets and I had a 145 rear and a 140 front. I'm going to put in 155 rear and a 152 front. Is this correct or should I have the bigger one up front? Or does it matter? I thought header length was the reason for different jet sizes from front to back. Thanks for the help.

 

Howdy, the big one goes in the back because of higher operating temperature on the rear cylinder.

 

Well I just tried it out 155 rear, 152 front. Still stumbles but at much lower RPM than before. I think it helps if I block off an air intake but its to hard to say. Sometimes it helped alot and then sometimes it didn't help at all. Of course my way of blocking it off was using my hand with a glove on.

I checked the plug on the road, went full throttle, hit the kill switch, let go of the throttle and rolled to a stop. Looks the same as it did before. I can't buy new plugs in town as they don't have any. I could order some on the web, I'll do that tomorrow.

I think I'm to lean still, time for my bigger jets. God I wish Sudco didn't screw up my order so bad, asked for 150-170 and got 148-160. Sucks.