RPM`s down new prop

[shhr]

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

[skoepp]

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

what prop ?

[shhr]

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

[Shibby1485]

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

[jawz]

I bet some heat fade is involved/ boost leak/ clutch slipage.

[shhr]

Hey Shibby

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

[shhr]

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

[Dark_viper42]

do I need to check the SC for slip

Thats what I would do before anything else

[skoepp]

Hey Shibby

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

SHHR your numbers are correct in my opinion. I see that with 7,800 rpm I am in the 10. to 10.5 psi. When turning 8,000 I am arround 11. 4 and with 8,100 close or at 12.0. just my .02

[lextoy]

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...