Super Jet Easy carb tunning question

[tj455]

I have an o2 superset and want to lower the pop off after adding riva f/a on my stock 38,s. What is the stock needle spring rates? Fyi I have Sizzler
pipe with stock pilot jet and 140 main jet.

 

[bondra131]

Look up the online manual for mikuni carbs. It will tell u everything and anything about tuning and what the pop off pressures should be with all different combos of the 4 different spring weights and different needle and seat sizes. Great manual for the rest of the tuning as well (low and high speed adjusters and jet sizes)

 

[bondra131]

Btw, you're going to want much bigger than stock pilot jets..

 

[Matt_E]

Look up the online manual for mikuni carbs. It will tell u everything and anything about tuning and what the pop off pressures should be with all different combos of the 4 different spring weights and different needle and seat sizes. Great manual for the rest of the tuning as well (low and high speed adjusters and jet sizes)

Unfortunately it won't tell you chit about what springs the 02 Superjet (and Superset) uses.

Btw, you're going to want much bigger than stock pilot jets..

Stock is 70. With a sizzler, I think 70-75 is appropriate. If he's lowering popoff, he may not need smaller than 72.5