Indian SIL GP factory stage 4 200 with SH2/22 (not Jetex) jetted 48 pilot and 123 main through a fast flow standard air box. 18/47 primary and SX150 gears fitted for the higher 4th gear. I've reduced the head gasket to a .75mm and smoothed out the inlet, transfers and exhaust ports. It has a Mazzuchelli GP crank fitted and I've removed (on advice from this forum) the bottom piston ring from the standard 3 ring piston which has made a slight improvement to acceleration and smoothness.
The next thing to do is check the timing as I've got to renew the drive side oil seal and crank bearings.
The exhaust has a pleasant note and loudish 'crack' to the sound but it is just a little more sluggish at low RPM and doesn't seem to want to rev out. Indicated max speed is 65MPH.
I had an AF 42mm and from memory it seemed to rev out much better as well as low rev torque.
Any thoughts?
New AF clubmans?
-
eibargum
- registered user
- Posts: 368
- Joined: Wed Jan 07, 2009 6:38 pm
- Main scooter: Vespa PX210 Polini
- Contact:
Mine had a indian stage 4, and 22mm jettex on before i fitted the muggy and it ran rearly well, dont know what the jetting was though as i didnt run it long and have since given the jettex away. it could be over jetted on the main if it wont rev out but as i know nothing about the carb you run maybe somone running the same could come on to offer wise words 
, regards.
, regards.