- Location
- Washington
When I did the carbs I used the same springs should I get new springs? How do I know what springs to get? I put a restrictor inline on the return didn't make any difference
Yamaha Waveblaster 2 stall
- Thread starter DJ Adkerson
- Start date
DylanS
Gorilla Smasher
- Location
- Lebanon Pa
You should at the very least get a pop off gauge and properly test your popoff to make sure it’s ballpark what the factory recommends. You might need to make minor adjustments for your exact setup but to start I would go manual specs. Look up “Mikuni super BN manual” and the website has a chart on what color springs are what gram and what they pop off at on what seat sizes. You can’t trust the springs to be perfect, anyone who knows what they’re doing will verify their setup with a gauge. Since you are saying the ski will run fine up top but if you hammer it right after letting off it dies, you have a major lean condition in the 20-50% transition range. On the Mikuni 44’s this is adjusted by changing pop off pressure, lower pop off richens this range, higher pop off leaning it out. This is just my two cents, but everything I’ve read so far is telling me your pop off is too high or uneven across your carbs. Unless you are running a set of modified carbs, stock 44’s have internal return restrictors, so you adding one down stream is useless.
just my two cents.
I agree completely with DylanS other than I would just verify the popoff pressures match and put larger low speed jets in it, or even just turn your screws out as a quick test. The oem 760 carbs have super find adjustment on the low speed screws so screw adjustments do much less than people think they do, you can go further out than the 3 turns that people always say is "all the way out".