91 400 [Archive] - Snowmobile World : Your #1 Snowmobile Forum

: 91 400


krazie680
09-28-2005, 08:16 PM
Does anyone know the stock jet sizes for a 91 indy 400. Thanks

krazie680
09-29-2005, 04:10 PM
I looked up the stock jets for the mikuni vm34 carb and it uses 330 mains and 35 pilots is this right?

storm rider
10-01-2005, 06:22 AM
My master repair manual says that the pilot jet is 30 but you are correct on the mains being 230. :D

krazie680
10-01-2005, 08:28 AM
230 or 330

BCDan
10-01-2005, 10:59 PM
1990-1991 Indy 400
Main Jet will change with temperature and elevation.. here's an example

1000-3000 feet elevation
-40 to -20 = 240
-20 to 0 = 230
0 to +20 = 220
+20 to +40 = 210
+40 to +60 = 200

VM34SS
Main- 230
Pilot- 30
Jet needle/clip position- 6DP17/3
Needle Jet- Q-2
Throttle Valve Cutaway- 2.0

krazie680
10-03-2005, 07:37 AM
Ahh awesome, Thanks