Thread: worth cavitation
09-08-2008, 09:09 AM #1
- Join Date
- Jul 2008
Stage 3 RXP
Installed Gibson Exhaust
Installed Riva Intake Grate
Installed 50lb racing injectors
Installed Pro SP-IMP-159- 15/19R
Installed RIVA 'GEN-2' Power Cooler Kit
Installed RIVA Pump Wedge
Installed RIVA Pro-Series Sponson
Installed Steel Wear Ring
Installed Stock ECU (I have Riva ECU But waiting for Activation Code)
Installed Blow Off Valve
Installed R&D RXP C5 Monster Charger Wheel, Spacer, Front Housing
Installed R&D RXP Anti-Cavitation Pump Cone Spacer .350 thick
68 mph at 7800 to 7,850 rpm. (previous rpm were 8,050)
previous speeds were 64 mph without mod
And now I have bad cavitation betwen 3000 rpm and 5000 rpm
anybody can help me with this!! thanks I'll appreciate
Last edited by douglasb76; 09-08-2008 at 11:02 AM.
09-08-2008, 09:12 AM #2
U doin 68 with all that done???? shold be more like 76. Is that what the ski speedo say or you got GPS?? as far at cavitation is your wear ring in good condition?? Also how is your carbon ring?? Your revs are low think maybe you need to take some pitch out of your prop but i think that some thing is not right with your setup.
Last edited by R88ory RXP; 09-08-2008 at 09:17 AM.
09-08-2008, 09:19 AM #3
09-08-2008, 09:20 AM #4
Also are you running the Riva ECU?? and the valve train upgrade?? if you are not running the riva ecu then you got the wrong injectors.
09-08-2008, 09:21 AM #5
I agree too! 68 is not fast enough with those mods. Are you sure you are not loosing some boost??
09-08-2008, 09:26 AM #6
Welcome to Greenhulk!!!!!
Doug..I would start by taking out that Pump spacer cone..Thats robing you of RPM and speed...
09-08-2008, 10:09 AM #7
50# inj. + stock ecu = pig rich and no speed. Some 42s and a rrfpr would be in order if no race ecu/valvetrain upgrade
09-08-2008, 10:28 AM #8
09-08-2008, 10:58 AM #9
- Join Date
- Jul 2008
R88 may you right because I didn't put my riva ECU yet cause I'm waiting for the activation code!! I will retest this weekend but I would like to fix the cavitaion problem first
I forget to say that I replaced the Wear Ring I put Steel Wear Ring
and I'm thinking that's the problem because,I see this ring little big and it's not seating right
Also I have a blowoff valve and I can hear that it's losing pressure at high rpm
Any suggestion are welcome thanksssss
09-08-2008, 11:02 AM #10
Get the ecu in first and then see what she does.....Those 50s are to big for the stock ECU.....
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