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348 clutch change

Discussion in 'Technical Q&A' started by SFchallenge, Oct 16, 2004.

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  1. SFchallenge

    SFchallenge F1 World Champ

    Jun 28, 2004
    11,945
    Sgp, KL, HK & London
    Full Name:
    Jon Wijaya
    #1 SFchallenge, Oct 16, 2004
    Hi guys, my 90 348 clutch has got wet slipping due to oil leaking through the seals. I've been offered kevlar replacement & someone mentioned that double clutch is better? Mine is single plate. What's the difference & do you think I should remove my clutch to find out if my flywheel etc is damaged before orderng parts? Meanwhile, can I still drive the car? Should I bite the bullet & upgrade to a 355 clutch?

    I'm about to install fuel pressure gauges, may I know what PSI should I get 15/30/100? I saw them on www.summitracing.com

    Where shall I fit it & do I need two since there are two fuel lines? Thanks!
     
  2. 348 Turbo

    348 Turbo Formula 3

    Jul 17, 2002
    1,837
    #2 348 Turbo, Oct 16, 2004
    I recently changed the clutch in my 348 turbo. A nice way to go is to just pull the entire "pumpkin" off and send it to Norwood's. James rebuilt the entire assembly with a new kevlar clutch and improved clamping power for the springs. Now, (it is broken in), it engages smoothly and nothing spins when I jump on the throttle but the wheels. Easy job too.
     
  3. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,224
    socal
    #3 fatbillybob, Oct 16, 2004
    Stick with what you got. It really makes no diff on a streetcar. Jeff is an exception since he can spin tires in 3 or 4 gears! As to guages run new braided line from the fuel filters to the inlet side of the fuel rails. You will need metric hose ends. Earls can get the metric ends but most are AN. end the guages at about the top of the cam covers. running fuel pressure is 3.2 bar roughly 45-50psi so get 100psi guages so your neddles are in the middle. Mkae sure all hose ends are terminated in a fitting and that the guages go into an aluminium T shaped block with holes for the guage and the hose end males to screw into. You do not what a fire due to shabby construction
     
  4. 348SStb

    348SStb F1 Rookie
    Owner

    Apr 9, 2004
    2,991
    Palm Beach County, FL or Nassau County, NY
    Full Name:
    Dave
    #4 348SStb, Oct 17, 2004
    At some point during the production run of 348s, the twin-plate clutch was changed to a single-plate clutch.

    This was done for reliability improvement.
     
  5. SFchallenge

    SFchallenge F1 World Champ

    Jun 28, 2004
    11,945
    Sgp, KL, HK & London
    Full Name:
    Jon Wijaya
    #5 SFchallenge, Oct 17, 2004
    Thanks guys! I'll most likely be taking out my "pumpkin" & see what it's got & send it over for a replacement. Hope this is the final end of my problems.
     
  6. ToddB

    ToddB Formula 3

    Nov 4, 2003
    2,241
    Vancouver B.C./OC
    Full Name:
    Todd
    #6 ToddB, Jan 7, 2005

    what year was it changed to a twin plate?
     
  7. 348SStb

    348SStb F1 Rookie
    Owner

    Apr 9, 2004
    2,991
    Palm Beach County, FL or Nassau County, NY
    Full Name:
    Dave
    #7 348SStb, Jan 7, 2005
    As a matter of fact--

    The twin plate clutch was changed to the single plate clutch during the production month of October, 1991.
     
  8. ToddB

    ToddB Formula 3

    Nov 4, 2003
    2,241
    Vancouver B.C./OC
    Full Name:
    Todd
    #8 ToddB, Jan 8, 2005
    good to know! thanks :)
     

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