Thread: i need some serious help ..
04-06-2009, 06:39 PM #1
i need some serious help ..
i just installed a riva trhu hull and some other mods ( sponson , block offs ) over the winters the sounds is awsome but i am noticing that my ski is not pulling as hard on top end the acceleration is way harder than before .
the ski has about 50 hours , and the does not turn over 7900 rpms .
could it be, since i have a stock prop and now with the thru hull my acceleration is harder i am not noticing a such a strong pull on top end , the ski pulls hard of the hole but then top end is kind of weak ....
do i have change my prop or repitch it , or could this be the wachers from the supercharger . i ve heard a few guys talking about this . i also order a worx grate and working on 4 in intake ... please guys help
04-06-2009, 07:17 PM #2
- Join Date
- May 2008
what were the rpms before?? if they were 8100 and now 7900 check for boost leakage
04-06-2009, 07:52 PM #3
04-06-2009, 07:55 PM #4
The SCer washers may not be the problem, but I would replace them now with RIVA washers. What was the ski pulling RPM wise before mods?
04-06-2009, 07:59 PM #5
What are you running the trim at? That has a great effect on rpms. Get a GPS, find some smooth water and find your best trim setting for best speed. Note RPMs and speed.
04-06-2009, 08:00 PM #6
04-06-2009, 08:02 PM #7
My RXP-Xs...both never topped 7800 rpm then i realized too much OIL..check your dipstick make sure between notches...now they run 7900 rpm...still cant get em to 8000 but i think my prop is a lil dinged soo im repacing it with a 15/22r in a month....air intake will also bring ur RPMS up 100-200 so u might wanna stay where you are if you dont want to mess with a prop...and top end will stay around 70ish with the stock grate...you will notice a difference with the worx
04-06-2009, 08:03 PM #8
04-06-2009, 08:05 PM #9
04-06-2009, 08:06 PM #10
It is the wear ring!! If your supercharger was bad the RPM drop would be much more!! or it could be a bad impeller!! it is not the SC!!
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