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  1. #1

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    R&D valve springs

    Anybody ever used the R&D springs in the store? It says they can be used for high lift cams.
    http://www.4-tecperformance.com/inde...oducts_id=2189


  2. #2
    dpracing's Avatar
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    Supertech here. Very happy with them. No problems over 9k
    http://www.4-tecperformance.com/inde...oducts_id=1979

  3. #3

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    Quote Originally Posted by dpracing View Post
    Supertech here. Very happy with them. No problems over 9k
    What cam are you using?

  4. #4
    Impulses's Avatar
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    Supertech springs are only safe up to 9,000 rpm or you could go with them to 9500 rpm?

  5. #5
    imp0ster's Avatar
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    I never floated them and I cavitated to 9200 lol. Chances are you'll have a failure of the valves or destroy a piston before you have an issue with the supertech springs.

  6. #6
    canadian iceman
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    Just a word of caution....if your using a high lift cam be sure you have enough spring...the results of spring crush is not pretty!!

  7. #7

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    Quote Originally Posted by IM2FAST4U View Post
    Just a word of caution....if your using a high lift cam be sure you have enough spring...the results of spring crush is not pretty!!
    would a 29 cam or like torx racing billet cam fall into this category?

  8. #8
    canadian iceman
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    I no the 29 cam is fine....i HAVE heard the torx has higher lift that MAY cause spring crush with supertech springs but im sure someone will chime in....ask duke... He no's...

  9. #9

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    I guess everyone is using supertech springs.

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