WHAT IS THE JETTING SPEC FOR THE CPR PIPES??
IS IT P-162.5 C-165- M-165
50 PILOT, NEEDLES RAISED ALL THE WAY??
WITH VENT TUBE IN??
EVERY TIME I CALL JEFF THE PHONE IS BUSY
IS IT P-162.5 C-165- M-165
50 PILOT, NEEDLES RAISED ALL THE WAY??
WITH VENT TUBE IN??
EVERY TIME I CALL JEFF THE PHONE IS BUSY
yamaviperGS30
New member
- Joined
- Jan 10, 2004
- Messages
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jetting for cpr's
If I remember correctly it is 160, 160, 162.5 and needles 4th with 1shim above and 1 below and both on mag and 47,47 and 50 pilots. I run a little leaner without problems but that is jeff's specs.
If I remember correctly it is 160, 160, 162.5 and needles 4th with 1shim above and 1 below and both on mag and 47,47 and 50 pilots. I run a little leaner without problems but that is jeff's specs.
SRXMAGIC said:WHAT IS THE JETTING SPEC FOR THE CPR PIPES??
IS IT P-162.5 C-165- M-165
50 PILOT, NEEDLES RAISED ALL THE WAY??
WITH VENT TUBE IN??
EVERY TIME I CALL JEFF THE PHONE IS BUSY
Jeff's preliminary setup that I recieved with my pipes, I know they have evolved somewhat after a couple of seasons but this was his base specs for a stock Viper. On a side note I have dropped my needles a shim and leaned my pilots by 2.5 and on a cold crisp day my racepak will tickle 1325 on a long run.
"Set up from pto cnt mag... 47.5, 47.5, 50 pilots fuel screws set to 2
turns out, 160, 160, 162.5 mains, 4 th needle clips on all, 2 shims on top
of needle clip for pto and mag, leave the shims below the clip on the mag."
S.X. said:
I should have noted that the Megapower heads take care of the potential heat issues on mine!
