Ok, so I'm getting irritated now lol. I've been trying to find someone locally to tune my carburetor (Mikuni VM22) and haven't found anyone. Been tinkering with it on and off and trying to get it to run right. So here's some info and my issues.
Non-Hemi 212:
No Governor
Billet Rod
Billet Flywheel
22lbs springs
.265 Cam
VM22 Carb 30/135 Jets, 1 turn out on the air screw, 2nd slot from the top on the needle.
.010 Head Gasket
12/60 Gearing
Everything else is stock internally.
I started with a vm26. It would cut out at higher RPM and tried jetting and messing with it. I think it was blueprinted to a different engine (whatever that means). So I bought a genuine VM22 carburetor. It came with 30/100 jets and I changed the main to a 135 and just slapped it on. Runs good, but still slow. I max out at 60mph, but it takes awhile to get there. My buddy as a Chikuni (Knock off) vm22 and pulls away from me effortlessly in the 1/8th mile. He has a similar setup, except he has the mod2 cam and 18lbs springs. When I ride his bike, I can feel a very obvious difference. Also with mine, if I'm idling and I full throttle it instantly, it'll fall on it's face. If I throttle it normally it'll pick up fine. My plug is a light brown color with some white around the electrode (lean correct?). So what would be a good starting point in pilot/main jet sizes for my build? I've heard some people running huge jets like upwards of 200 mains with similar builds. I know I can adjust the needle, but don't want to rely on that to get my correct configuration, but have been playing with it too. I've also heard some people saying to try riding it with half choke and if it runs better, I have a lean condition. Is that true?
Thanks in advance.
Non-Hemi 212:
No Governor
Billet Rod
Billet Flywheel
22lbs springs
.265 Cam
VM22 Carb 30/135 Jets, 1 turn out on the air screw, 2nd slot from the top on the needle.
.010 Head Gasket
12/60 Gearing
Everything else is stock internally.
I started with a vm26. It would cut out at higher RPM and tried jetting and messing with it. I think it was blueprinted to a different engine (whatever that means). So I bought a genuine VM22 carburetor. It came with 30/100 jets and I changed the main to a 135 and just slapped it on. Runs good, but still slow. I max out at 60mph, but it takes awhile to get there. My buddy as a Chikuni (Knock off) vm22 and pulls away from me effortlessly in the 1/8th mile. He has a similar setup, except he has the mod2 cam and 18lbs springs. When I ride his bike, I can feel a very obvious difference. Also with mine, if I'm idling and I full throttle it instantly, it'll fall on it's face. If I throttle it normally it'll pick up fine. My plug is a light brown color with some white around the electrode (lean correct?). So what would be a good starting point in pilot/main jet sizes for my build? I've heard some people running huge jets like upwards of 200 mains with similar builds. I know I can adjust the needle, but don't want to rely on that to get my correct configuration, but have been playing with it too. I've also heard some people saying to try riding it with half choke and if it runs better, I have a lean condition. Is that true?
Thanks in advance.
