Thread: RPM`s down new prop
05-23-2008, 09:58 PM #1
RPM`s down new prop
I changed props on my 05 RXT stage 2 B-KIT and took it for a test
when I first hit the water my R`s were at 8000-8050 then on the second run they went down to 79-7950 after I ran it for a hour then my R`s went down to 7800-7850 and boost was just over 10 Jerry shimed my SC and it has less than 3 hours, temp today was 85
do I need to check the SC for slip
should I just take some pitch out of prop
I would love to try the headers to really see if I gain RPM`s over the GH box but I would hate to spend that money and not pick up enough R`s
or I have the Riva ECU if I add the ECU will it give me enough additinal power to turn the prop
I am close to getting my 05 where I want it just need some help on what to do next
05-23-2008, 10:00 PM #2
05-23-2008, 10:03 PM #3
the new 15/22
if the x ski`s can turn this then my 05 should be able to really turn it with the B-Kit
05-23-2008, 10:10 PM #4
sounds like a boost leak??
rpms incrementally DROPPING with each pass...
10psi with a b-kit at 8000 rpms?
doesn't add up, something is amiss
05-23-2008, 10:12 PM #5
- Join Date
- Jan 2006
- Rydal, Georgia U S A
I bet some heat fade is involved/ boost leak/ clutch slipage.
05-23-2008, 10:15 PM #6
the 10 PSI was when the R`s were 7800-7850
my first pass at 8000 my boost was 11.3
with the other prop I was at 8150 with 11.8-12
05-24-2008, 09:21 AM #7
does anyone have a extra Rude charger that I could test. I would pay all shipping and some extra as i really want to test the Rude on my set up
05-24-2008, 09:33 AM #8
05-24-2008, 10:02 PM #9
05-24-2008, 10:50 PM #10
isnt it usuallly necessary to check the SC slip after it breaks in, lets say at 5 hrs or so???
it makes sense that it has worn in and is slipping , just needs to be retorqued.
then should be good to go for a while???
or is this not standard procedure for a newly rebuilt SC...
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