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  1. #1
    WP3223's Avatar
    Join Date
    Jun 2011
    Boynton Beach, FL

    Best Springs to Run 9100-9400 RPM's?

    Thinking of running re-grinds & spinning to around 91-9400ish. What springs could make this relatively safe? Not sure if the Riva's would provide too much pressure.

    Was wondering about the R&D Super Singles. Does anyone have experience with these, or have another good recommendation?


  2. #2
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Morgan City, LA
    I have run the Riva valve train upgrade with Riva valves up to 9300 RPM with no issues. Many others are doing the same and doing it with stock valves.

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