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  1. #1
    rick xp's Avatar
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    RR retainers and lightend valves

    Hey guys im about to chuck in a Riva ECU and rev this thing to 8550.

    Now my question is can my valve train handle it?

    I have searched many times and i am a bit confused?

    I have the Rotax Racing retainers and i have the Ferrea lightend valves.

    These made each valve 15 grams lighter than stock.

    Am i good to go?


  2. #2
    SHO stopper palmbeach jesse's Avatar
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    Good to go brotha!!!

  3. #3
    iceman's Avatar
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    RR retainers (and shims) with lightweight valves are not good enough for 8800 ECU. One exhaust valve destoyed the head, the piston and other valves in cylinder 2. in my RXP-X just after 7 hours of use...


    Iceman

  4. #4
    rick xp's Avatar
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    What lightweight valves were u using?

    Should be sweet for 8600 though?

  5. #5
    iceman's Avatar
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    ferrea lightweight valves.

    In my other racing ski I have 8600 ECU (riva) with riva's valve train upgrade kit (and OEM valves) with no problems.

    Iceman

  6. #6
    rick xp's Avatar
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    Thanks Iceman,

    I will keep that in mind. Were you running in rough conditions?

    Anybody else have any experiences with the rotax retainers?

  7. #7
    dziurek's Avatar
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    This is I got left from a ferrea valve Every thing was ok until the Rotax Ecu came into the setup. The rev didnt go over 8450 when this happend.
    Now I know I am not the only one with this problem.
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  8. #8
    rick xp's Avatar
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    Do you reckon there is a problem with these valves??

    This is not looking good guys.

  9. #9
    rick xp's Avatar
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    Quote Originally Posted by dziurek View Post
    This is I got left from a ferrea valve Every thing was ok until the Rotax Ecu came into the setup. The rev didnt go over 8450 when this happend.
    Now I know I am not the only one with this problem.

    What retainers were you using?

  10. #10
    JESUS G's Avatar
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    I have installed some RR ECU with Light valves from RR and spring and retainers and at the moment i didn´t had problems....

    Anyway for me the better setup is RR light valves with Riva kit retainers valve kit. I have installed in my GTI (9.000 RPM and more thna 60 hours) and any problem.

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