dr1445 wrote on 05/30/10 at 09:07:19:that is correct on the boot dia., when i set a tm40 up on the neighbors savage i used a step ring i had from my suzuki dr650 project. i seem to recall 142.5mj, 15pilot, a 40 ap nozzle jet with the needle on the 3rd slot down. this was on a stock bike.
edit: the ap delay can be set at the top of the rod with a Popsicle stick or .100". this is a good starting point and worked for me both on the dr and the savage but no dyno here.
I made a step ring out of derlin, but even with silicone I could never get it to seal right. It also never held the carb firmly.
Ive got a slightly ported exhaust port, full 1.625 exhaust, 4 degree ignition advance. 155 main seems to be pretty good. the dyno will tell soon. Think im running a 17.5 pilot, could stand to go a size or two smaller. Know anywhere I can get some jets that dont cost an arm and a leg?
This winter I plan on welding up the exhaust rocker box in the head and re designing the exhaust port. Its honestly the worst design ive ever seen.
Anyone have a destroyed head laying around they would like to get rid of?
Pages: 
