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TR Rev Limiter??

Discussion in 'Technical Q&A' started by ricrain, Apr 27, 2004.

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  1. ricrain

    ricrain Karting

    Nov 1, 2003
    213
    Dallas Area
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    Ric
    #1 ricrain, Apr 27, 2004
    Whilst pounding the pavement in my TR, the engine seemed to miss at 6K RPM indicated. I hooked up an external tach and tried again, and found that my TR's tach was reading low. 6K indicated was actually 6900-ish RPM. I thought the TR didn't have a rev limiter. Does anyone know for sure?
     
  2. Steve Marschman

    Steve Marschman Karting

    Nov 4, 2003
    60
    Idaho Falls
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    Steve Marschman
    #2 Steve Marschman, Apr 28, 2004
    Will pull past 7000 if your're not careful. Dyno says max power and torque (on mine) is reached at 6100, so its the stupidity of the owner wasting the extra revs.

    Regards-
    Steve
     
  3. khayes

    khayes Formula Junior

    Nov 1, 2003
    591
    Austin, TX
    Full Name:
    Kelly Hayes
    #3 khayes, Apr 29, 2004
    I don't think the TR has a rev limiter. Last week my gas and clutch pedal stuck to the floor for a moment before returning and it was during a hard shift from 2 to 3. I more than redlined it before the clutch finally engaged. I topped off the brake fluid reservoir and the problem hasn't returned yet.
     
  4. fatbillybob

    fatbillybob Two Time F1 World Champ
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    Aug 10, 2002
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    #4 fatbillybob, Apr 29, 2004
    What ecm is in your TR? If CIS early TR's? no rev limiter. Later motronics yes limiter.
     
  5. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
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    #5 Steve Magnusson, Apr 29, 2004
    I've never come across any, even remote, reference to an "electronic" rev-limiting function in the TR documentation that I've been exposed too (but one can argue that all Otto-cycle engines have "mechanical" rev limiters ;)).
     
  6. tbakowsky

    tbakowsky F1 World Champ
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    #6 tbakowsky, Apr 29, 2004
    Nope no rev limiter (don't even bother asking how I know this)
     
  7. Dr_ferrari

    Dr_ferrari Formula 3
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    Nov 2, 2003
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    Jim McGee
    #7 Dr_ferrari, Apr 29, 2004
    No rev limiter.....sounds like you may have a failing crank sensor.

    Check the connectors for the sensors and all your engine connectors/grounds.

    best regards, Jim
     
  8. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
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    Brian Crall
    #8 Rifledriver, Apr 29, 2004
    Iwas factory trained on those, they ALL have revlimiters.
     
  9. tbakowsky

    tbakowsky F1 World Champ
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    #9 tbakowsky, Apr 29, 2004
    Explain?
     
  10. Dr_ferrari

    Dr_ferrari Formula 3
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    Jim McGee
    #10 Dr_ferrari, Apr 29, 2004

    Worked for the Factory.....NO rev limiter on pre-motronic systems. unless someone added it.

    Take a TR, place in neutral and mash pedal to floor - see what happens

    Best regards, Jim
     
  11. 512tr

    512tr Formula Junior

    Feb 6, 2004
    336
    montreal
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    tony
    #11 512tr, Apr 29, 2004
    my 1993 512tr has a rev limiter.
     
  12. Dr_ferrari

    Dr_ferrari Formula 3
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    #12 Dr_ferrari, Apr 29, 2004
    True - the 512TR has the Motronic engine management system that has built in a rev limiter.

    Best regards, jim
     
  13. Ferrari_tech

    Ferrari_tech Formula 3

    Jul 28, 2003
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    Malcolm W
    #13 Ferrari_tech, Apr 30, 2004
    Very interesting comments, as far as I can recall T/R's had a rev limiter controlled by the Ignition ECU and 512T/R's had a limiter controlled by the Motronic ECU.

    Don't know if US spec cars were different.


    MW
     
  14. tbakowsky

    tbakowsky F1 World Champ
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    #14 tbakowsky, Apr 30, 2004
    I remember a person takeing a picture and posting it this web sight of his bosses TR show 10,000rpm on the tach. We all told him he was nuts or what ever. I have never heard or felt a TR rev limiter kick in at all.
     
  15. spider348

    spider348 Formula 3

    Nov 3, 2003
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    #15 spider348, Apr 30, 2004
    My '86 ROW TR had a rev limiter. Built in the ECU to the best of my knowledge.
    John
     
  16. khayes

    khayes Formula Junior

    Nov 1, 2003
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    Kelly Hayes
    #16 khayes, Apr 30, 2004
    My 86 TR does not have a rev limiter. I know, I've been there and beyond.
     

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