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Problem with clutch or maybe transmission

Discussion in '348/355' started by md0811usmc, May 8, 2007.

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  1. md0811usmc

    md0811usmc Karting

    Feb 21, 2006
    75
    Reading, Pa
    Full Name:
    Marco Decamillo
    #1 md0811usmc, May 8, 2007
    Hello, was heading down to Algar Ferrari yesterday for some service in my 1991 348, when I noticed that when I accelerated the rpm's went up but the car did not seem to accelerate normal. I stopped at a light and when I pulled out in first gear the rpm's went up high and the car pulled out very, very slowly. This happened in my NSX and it turned out to be the clutch master cylinder. Anyone have any suggestions? Either way its now at Algar, but I am just curious. Thanks
     
  2. J. Salmon

    J. Salmon F1 Rookie
    Owner Rossa Subscribed

    Aug 27, 2005
    4,367
    VA
    #2 J. Salmon, May 8, 2007
    Clutch is slipping. Sounds like it is time for a new one.
     
  3. Bullfighter

    Bullfighter Two Time F1 World Champ
    Lifetime Rossa Owner

    Jan 26, 2005
    22,607
    Gates Mills, Ohio
    Full Name:
    Jon
    #3 Bullfighter, May 8, 2007
    +1
     
  4. gothspeed

    gothspeed F1 World Champ

    May 26, 2006
    10,244
    U.S.A.
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    goth
    #4 gothspeed, May 8, 2007
    ++1 Clutch is worn :(
     
  5. md0811usmc

    md0811usmc Karting

    Feb 21, 2006
    75
    Reading, Pa
    Full Name:
    Marco Decamillo
    #5 md0811usmc, May 8, 2007
    Thanks. What do clutches go for$$$?
     
  6. Miltonian

    Miltonian F1 Veteran

    Dec 11, 2002
    5,966
    Milton, Wash.
    Full Name:
    Jeff B.
    #6 Miltonian, May 8, 2007
    "What do clutches go for?"

    It depends entirely on what is found when the clutch is removed. The labor is quite easy, you don't have to pull the transmission out to replace the clutch. But there are some variables:

    - Does the car have a single disc clutch or a twin disc clutch?
    - Is the brake/clutch fluid leaking from the slave cylinder?
    - Is the transmission fluid leaking from the "triple seals" on the shaft?
    - Is the Kluber grease leaking from the flywheel?
    - Is the flywheel badly scored or warped, or the internal parts burned out by lack of grease?

    The easiest scenario is that the disc is simply worn below the specified thickness and you need just a new disc and pressure plate.

    The very worst case scenario is that everything is worn out, including the flywheel, and all of the seals are leaking. Flywheels are horrendously expensive ($2500 ++) and getting difficult to obtain.

    Good luck!
     
  7. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,224
    Mount Isa, Australia
    Full Name:
    Pap
    #7 PAP 348, May 8, 2007
  8. Juan-Manuel Fantango

    Juan-Manuel Fantango F1 World Champ
    Rossa Subscribed

    Jan 18, 2004
    14,774
    Full Name:
    Juan
    #8 Juan-Manuel Fantango, May 8, 2007
    Do not drive it as you will continue to damage the flywheel. They may be able to resurface it.
     
  9. f355spider

    f355spider F1 World Champ
    Owner Rossa Subscribed

    May 29, 2001
    18,053
    USA
    #9 f355spider, May 8, 2007
    Did you read his post? It is already at the dealer! Sheesh... ;)
     

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