09-28-2010, 07:40 AM #1
RXP Nozzle on conversion ski question
Just finished my project and I'm running 75 at 8180. It has a 255 setup in it. I just got an rxp nozzle how much will the rpms drop?
09-28-2010, 08:22 AM #2
Assuming you were running the 87mm ? If so maybe 40-60. On highly modified set ups there is more of a difference when it comes to weather.
I ran an 87mm @ 8140-8160 and in the same weather turned an 83mm RXP nozzle @ 8080-8100.
09-28-2010, 08:24 AM #3
I should also add your target should be 8100 in this cool weather so when it heats up you can be @ the 8040-8080 range (unless you plan on playing with props and nozzles all year).
09-28-2010, 08:44 AM #4
Ya so the nozzle alone isnt gonna do it for me. I still have to get the 4 inch intake too. Im running the stock intake with a stainless filter and the rubber hose has a slight kink in it. Im probably gonna end up on the limiter. but thanks for the advice. Did you gain any MPH by swapping nozzles?
09-28-2010, 08:48 AM #5
09-28-2010, 08:59 AM #6
Take the filter off your intake and gain 75-100 rpms.
09-28-2010, 09:27 AM #7
Well considering my 75 mph was read with the ski popping out of the water from chop. It looks like I might be right at 80 and the only mods to the engine are a gutted waterbox, a 160 thermostat, and a 4 inch intake. Im more than pleased with that
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