Rs jetting

[Chay]

Hi 

Looking for some starting point advice for jetting on a set of rs38's 

Gsx et motor 

1290cc.big valve head. G3 inlet cam efe on exhaust. Using a v&h Pro pipe

Ta fir any advice

[Blubber]

Just use the Mikuni datasheet here for a starting point, page 2.

130- 140 ish main jet  and  17.5 pilot 

[Chay]

Thanks mate will be having a look at that

[Jaydee]

5 hours ago, Blubber said:

17.5 pilot 

The same 17.5 pilot jet is used in the RS36's, 38's and 40's series as standard b.t.w.