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  1. #1
    Gus13letter's Avatar
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    Mystery 8640 RPM..... Who is at 8640 as their max RPM?

    I have seen a few recent reports of folks new top speed with the max RPM at 8640. I find this funny, because when I had my E1 wheel I was max RPM at 8640 and sometimes 8720.

    Out of curiosity, I'd like to hear from others on what their setup is if they are maxed out at 8640 rpm or maybe 8720. There has to be a commonality and or restriction that is common with each of the setups.
    Last edited by Gus13letter; 07-29-2013 at 01:17 PM.


  2. #2
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    I think you tach was stuck lol just kidding.

  3. #3
    Gus13letter's Avatar
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    Quote Originally Posted by JIM'S PERFORMANCE View Post
    I think you tach was stuck lol just kidding.
    Luckily you got me into some crazy speeds and rpm now but just thought to put a general thread out there for others who are in the same thing cause I found it odd when others posted same exact results.

  4. #4
    Boost Almighty's Avatar
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    Mine says the same thing. I think the rev limiter is set there. Mine only reads that high if it cavitates.

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    Gus13letter's Avatar
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    Last edited by Gus13letter; 07-29-2013 at 01:06 PM.

  6. #6
    Gus13letter's Avatar
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    I know there has to be many others. Just thought it would be interesting to see what they say when they post up. I know 3 right off hand with different setups (15.5, E1, ET18 ) at 8640 rpm and I think I know the commonalities between them all.....
    Last edited by Gus13letter; 07-29-2013 at 03:50 PM.

  7. #7
    yol937's Avatar
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    I was stuck at 8640 when I had my e1 but have since gotten past that rpm Barrier with my new setup

  8. #8
    ABUDHABI boost your life's Avatar
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    befor i sell my ski with R2 and E1 i only see exactly 8640 max RPM

  9. #9

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    Guys the answer to your question is that with the oem camshaft the peak tork of the engine is reached between 8200 and 8400 usualy 200 to 300 rpms after that is the max these engines seem to pull since the tork is starting to fall lower. Any change in cam or cam timing will alter the peak tork point on rpms up or down. Tommy Jordan

  10. #10
    Boost Almighty's Avatar
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    Bringing this thread back.
    There is no way everybody is turning 8640 rpms. Mine reads that high every time now. I called R&D and they said the R3 reflash is 8850 for the rev limiter. I have a TTO tach and I think that's the issue. What kind of tach is everyone else running??

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