factory b pipe in rn. What are best jetting settings

[curt248]

I have a 01 superjet rn. It has the factory b pipe, ms? ignition changer, flame arrestors, carbon reefs.

It has a lull at about 2/10 throttle. It then comes back with a surge at 3/10. What changes to make with the carb? I'm in Il (chicago area). Temps have been about 80 to 85.

Please help.

I'm looking for a starting point (how many turns out etc.)

 

[Shifty]

This is an excerpt from Factory Pipes website on the limited pipe...

These adjustments are for 730 feet above sea level on a stock engine with aftermarket flame arrestors. Your specific adjustments may vary depending on engine modifications, fuel, altitude and other variables. Please consult a qualified technician if you are not familiar with tuning your carburetor. These changes must be made prior to running the engine.

Main Jet: 135 (130 stock)
Pilot Jet: 70 (stock)
High speed screw: 1 2 turns out from closed
Low speed screw: 1 1/4 turns out form closed
Needle & Seat: stock (55 psi)
Spring: Stock (95 gram)

 

[Matt_E]

http://www.factorypipe.com/media/instructions/yamaha/701SJ03.pdf

 

[DC SUPERJET]

I went with the settings factory pipe recommends and mine runs great, and I didn't have to change anything. I would at least start there and tune accordingly.

 

[curt248]

Anyone know what high speed screw out 1 2 means? Does that mean 1 to 2 turns out? In the factory jet pdf it looks like the 1 is in normal black and the 2 is in grey (maybe they meant to delete the 2)