Thread: Lost about 150 rpms :/
10-22-2011, 07:09 AM #1
Lost about 150 rpms :/
Since my last gps runs on the 81 nozzle.
Im down to about 7940 to 8000 rpms now
Where should i start looking for the missing rpm’s I had to swap up the an 83mm nozzle to get it to 8140.
10-22-2011, 07:23 AM #2
hows your oil levels? the weather? heat/humid? with going from an 83 to and 81 it will bring rpms down so youll need to repitch your prop
10-22-2011, 07:26 AM #3
Weather is the same, two days ago... The ski normally runs 8140 with the 81 ring... Now is down on power and at 7940-8000.. I swapped to the 83 ring to bring rpms up for the day yesterday.
OIL level has not changed.
Ski has ran 8140 ish for 2 years with that setup. give or take 40 rpms depending on conditions.
10-22-2011, 07:49 AM #4
Sounds like you are losing slip on your supercharger.
10-22-2011, 08:18 AM #5
10-22-2011, 08:37 AM #6
10-22-2011, 08:59 AM #7
Check for boost leaks before you pull the S/C.
10-22-2011, 10:12 AM #8
- Join Date
- Mar 2006
barametric pressure was VERY low here in Michigan a couple days ago-- it may be moving south?
My ski typically loses 100+ rpm from the morning low temps to the higher temps during the day in the summer time...
10-22-2011, 10:42 AM #9
Scer slip and the wear ring are the two areas i would look at
10-22-2011, 10:51 AM #10
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