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  1. #1

    RXPX 9.5-1 Compression questions?

    Last summer i rebuilt the engine in my 08' RXPX .. Carrillo Rods 9.5-1 cp pistons ( as i was told was the better option ) lightweight balance shaft/flywheel .. lightweight valves and valvetrain upgrade .. ARP studs .. it has a 2Rude charger with 60lb injectors pressure regulator etc.. Torx Racing 8650 tune .. riva exhaust and intake filter removal .. im sure there is things im forgetting.. id like to go with a bigger charger this year but im reading people having problems with headgaskets at WOT .. anyone have any experience with this or suggestions ?


  2. #2
    boost junkie skidoochris's Avatar
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    what fuel do you plan on running on a race tune...probably no knock control ....so I could see deto and blown head gaskets

  3. #3
    Neither of which i want.. i have no problem setting it up or running what i need.. i just cant seem to find an answer to that.. what tune or who could do a tune or what i would need

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    GRF + DashPac:) seadoo02xp's Avatar
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    So far....on 93 octane pump gas my ski with 9.5:1 cps hadled around 13psi with no sign of knock, although this is with a motec ecu that I can back off timing whenever I need to, this was done at 36 degrees timing up top, will run more this week and see where my limit is. I highly recommend getting done kind of knock control

  5. #5
    boost junkie skidoochris's Avatar
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    I have ran 15psi on pump 93 but he is using some race flash probably with no knock control
    so if he is looking for a reliable tune IMO that torx tune not it

  6. #6
    GRF + DashPac:) seadoo02xp's Avatar
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    Quote Originally Posted by skidoochris View Post
    I have ran 15psi on pump 93 but he is using some race flash probably with no knock control
    so if he is looking for a reliable tune IMO that torx tune not it
    Ya I would say if you wanna go fast and be safe you are gonna need to watch things pretty close

  7. #7
    JPR's Avatar
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    Who dose Torx's tunes ? they done in house ?

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    cjo632racing's Avatar
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    I run pump gas 15+ hrs on ski no problems. I know people with 10:1 comp running pump gas no problems..

  9. #9
    shrabber's Avatar
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    Quote Originally Posted by cjo632racing View Post
    I run pump gas 15+ hrs on ski no problems. I know people with 10:1 comp running pump gas no problems..
    Plus +1

  10. #10
    Eastside Powersports Slow 91's Avatar
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    Quote Originally Posted by jaffabas View Post
    Who dose Torx's tunes ? they done in house ?

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