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  1. #1
    Libationist krokus's Avatar
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    '12 P-X Valve Train Upgrade?

    Ok, need to raise the V-Tech tune past my present 8350 limit so I need to upgrade the valve train. Riva's bottom line upgrade is retainers and rocker bolts. Grapevine (tech) says I'm ok to 8600 without upgrading the springs on this engine.

    Or should I entertain R&D's upgrades (but they don't include the rocker arm bolts) ?

    I am also planning on a 137 billet wheel too, so I'm thinking I should bite the bullet and do the springs as well. But are the OEM bolts douched?

    All thoughts appreciated.


  2. #2
    ecpChris's Avatar
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    I spun Riva retainers to 8800 without issue. For around the same price just get the Supertech springs in the online store

  3. #3
    Eric Ocman's Avatar
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    supertech springs/retainers for 300

  4. +1 by:


  5. #4
    Libationist krokus's Avatar
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    Thanks guys. Much appreciated.

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