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  1. #1

    Cavitation is back...

    I installed the Riva top loader intake grate and the cavitation was virtually gone. However, this weekend I installed the intake manifold upgrade and r&d pump fill kit and the cavitation has returned? any ideas?

    Also after doing the intake manifold I can hear what sounds like the supercharger wheel spinning it sounds kinda scratchy?? if I hit the throttle and let off really quickly you can hear it spinning? is it normal??


  2. #2

    Join Date
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    yes its getting more air now, so its normal

    how many pops are you getting with your cavitation and did you use the r&d intake or the riva also is it standard prop?

  3. #3
    Its the Riva intake grate and it is the standard prop. It prob. pops 4-6 times...seems like it is back to what it was stock. I gained 2 mph with the intake manifold.

  4. #4

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    your prop is over spinning so put the 13/22 on it trust me, bye bye cavitation and hello top speed

  5. #5
    I want to wait until I am done modding to buy a impeller...why spend the time and money more than once...but it is good to hear that this can be fixed...my mechanic said that the impeller is a b!%@% to swap...

  6. #6
    mjh3ides's Avatar
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    Quote Originally Posted by allstar71 View Post
    I want to wait until I am done modding to buy a impeller...why spend the time and money more than once...but it is good to hear that this can be fixed...my mechanic said that the impeller is a b!%@% to swap...
    Good idea. Match the prop to your mods instead of visa versa. Following a plan will almost always save money. Unortunately, I can never get to the point when I am done modding.

  7. #7
    Hi, I'm just researching grates at the moment. Did the water conditions change much from usual when it started cavitating again?

  8. #8
    no the conditions on the lake were close to the same fairly calm...maybe a bit colder than b4 but still it was 80 outside dont know about water temps...

  9. #9
    Moderator OsideBill's Avatar
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    Are you guys sealing the rear shoe part when installing the grate?

  10. #10

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    yes

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