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Thread: Rev Limit

  1. #21
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    Default Re: Rev Limit

    I rev my 87 with the 6500 rpm to damn near 7 grand when I bounce it off the limiter once or twice. The aluminum flywheel and drive shaft are conductive for the ignition not cutting in quite in time after the 2nd or 3rd time off the limiter. Doesn't hurt anything, Toyota built in a hefty safety margin I'm sure.

  2. #22

    Default Re: Rev Limit

    I have the 7M crank (and a lot of other goodies in the engine),
    and I run mine to 8500........

    ECU can have the clock crystals changed to raise the rev limiter.
    But don't do it without building a good strong engine.

    I send my ECUs to a guy in Florida by the name of Kieth Goldin
    He charges $110 to change the rev limiter, and ship the unit back to you.
    His e-mail is keith.goldin.co75@statefarm.com

  3. #23
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    Default Re: Rev Limit

    Quote Originally Posted by gofastgeorge View Post
    I have the 7M crank (and a lot of other goodies in the engine),
    and I run mine to 8500........

    ECU can have the clock crystals changed to raise the rev limiter.
    But don't do it without building a good strong engine.

    I send my ECUs to a guy in Florida by the name of Kieth Goldin
    He charges $110 to change the rev limiter, and ship the unit back to you.
    His e-mail is keith.goldin.co75@statefarm.com
    I've been trying to get that done for ages! You're my hero!

  4. #24
    I play with fire
    Poodles's Avatar
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    Default Re: Rev Limit

    Crystal changes the clock cycle in the ECU, causes some adverse effects from what I remember...
    '89 Turbo Targa 5-Speed, ARP Studs, Cometic HG, Whiteline Adj. Swaybars, ZW DDP, Cooleeze Hardpipes, Apex'i Intake, Type II BOV, Action Stage 3 Clutch, Bilstein Shock & Springs w/ Cusco Mounts, Raptor Racing Exhaust & Cat

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  5. #25
    Dang Dude! No Way Man.
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    Default Re: Rev Limit

    wasnt the 6m crank only 7lbs or something lighter than the 7m crank?

  6. #26
    Grumpy Old Man
    IJ.'s Avatar
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    Default Re: Rev Limit

    << one of the few that have ran both cranks identically prepped in the same engine weeks apart with the crank being the only change due to a communications breakdown with my crank shop

    6M Snappier acceleration

    7M Smoother across the rev range until 6500 then there was little difference to be felt.

    Turned all 3 to 8300rpm

    6M


    7M


    7M FrankenCrank

  7. #27

    Default Re: Rev Limit

    Quote Originally Posted by Poodles View Post
    Crystal changes the clock cycle in the ECU, causes some adverse effects from what I remember...
    None that I have seen, and I have been running it for a couple of years.

  8. #28
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    Default Re: Rev Limit

    Quote Originally Posted by gofastgeorge View Post
    I have the 7M crank (and a lot of other goodies in the engine),
    and I run mine to 8500........

    ECU can have the clock crystals changed to raise the rev limiter.
    But don't do it without building a good strong engine.

    I send my ECUs to a guy in Florida by the name of Kieth Goldin
    He charges $110 to change the rev limiter, and ship the unit back to you.
    His e-mail is keith.goldin.co75@statefarm.com
    YOU ARE AWESOME! Thank you



    Hmmm makes me wonder if I should use the crank out of my GE block, IJ did you ever wheigh them? Can't seem to get solid weight.
    Getting old is mandatory, growing up isn't. --- Boostin Since 10/28/08
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  9. #29
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    Default Re: Rev Limit

    Quote Originally Posted by Poodles View Post
    Crystal changes the clock cycle in the ECU, causes some adverse effects from what I remember...
    This is the first i've heard of adverse effects, can you educate me beyond the 'don't do it to stock engines' info?
    -Dave
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    Wanted: 2 hubcentric wheel spacers, 10-15mm.

  10. #30
    I play with fire
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    Default Re: Rev Limit

    I'll have the hunt down the info.
    '89 Turbo Targa 5-Speed, ARP Studs, Cometic HG, Whiteline Adj. Swaybars, ZW DDP, Cooleeze Hardpipes, Apex'i Intake, Type II BOV, Action Stage 3 Clutch, Bilstein Shock & Springs w/ Cusco Mounts, Raptor Racing Exhaust & Cat

    >>TomTom Custom Supra Icon<<

    [Quin] 6:00 pm: fuck you
    [Quin] 6:00 pm: assholes
    [Canuckrz] 6:01 pm: fuck you and every mall santa that looks like you Quin
    [Quin] 6:01 pm: lol pwnt
    Aliens Cause Global Warming: A Caltech Lecture by Michael Crichton

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