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  1. #1
    drewnz's Avatar
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    Riva waterbox vs gutted oem!!

    Can anyone confirm if there would be, or if there is a performance difference
    Between the riva waterbox and removing all the baffels from the oem. Anyone done it or compared the two?


  2. #2
    RichieFZR's Avatar
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    I think the the riva one is better, but using a reflash or aftermarket ECU is the way you will get the most out of a riva box. A gutted stock box will do a good job. It all depends on what your setup is...

  3. #3
    drewnz's Avatar
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    I've got motec. Aiming for 350-400hp eventually. Surly the riva is just an empty box. It's dimensions are about the same as the oem.

  4. #4
    RichieFZR's Avatar
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    Quote Originally Posted by drewnz View Post
    I've got motec. Aiming for 350-400hp eventually. Surly the riva is just an empty box. It's dimensions are about the same as the oem.
    with 1000cc injectors you'll get a stock SHO with motec to around 350-380hp mark depending on timing and boost and RPM's. Just watch out, those high rpms on a stock motor, parts move! mine before we pulled it down wouldve been making around 380 mark...... after seen the crank and bearings...... OUCH! just beware. As for the riva box? maybe it is.... I still run stock water box. Now designing a straight threw pipe setup.

  5. #5
    drewnz's Avatar
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    I hear ya. I've already rebuilt all the internals except crank. from what I understand you can run big boost 18-20 psi with low rpm . About 8300 . I've set limiter at 8500. Bit of a segue from the water box . I think I'll just gut the oem and run riva rear exhaust.

  6. #6
    RichieFZR's Avatar
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    Anything is better then having the box stock.

  7. #7
    RichieFZR's Avatar
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    Anything is better then a stock box.

  8. #8
    drewnz's Avatar
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    Anyone else got water box advice

  9. #9
    Phil.Borg's Avatar
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    i have one you can try im only going to use it on race days its to loud for everyday use

    im also in sydney

  10. #10
    C Dawg222's Avatar
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    Is anyone else, running a non-baffled waterbox, having horrible luck with O2 sensors? Even when using a heat sink bung extender, it still only lasted about 2 hrs before I noticed it reading wrong. I was told, the non-baffled waterboxes allow more water to splash back into the manifold...I just pulled my stock waterbox out of storage to try, when I hopefully get another sensor from autozone under warranty.

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