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Centerforce clutch behind a L-134

Discussion in 'Flat Fender Tech' started by evanjm, Feb 8, 2008.

  1. Feb 8, 2008
    evanjm

    evanjm Yeah, it's got an F-head.

    Leesburg, VA
    Joined:
    Sep 13, 2006
    Messages:
    408
    I've read about it before, but I can't remember where..

    Anyways, I think it's possible to install a Centerforce Dual-Friction clutch behind an L-head (or any 134 for that matter). Has anyone done this? For what model car should I order the clutch for, so the splines will work?

    Besides drilling out the flywheel to accept the larger clutch, are there any other concerns about doing this swap?

    Thanks,
    Evan
     
    evanjm, Feb 8, 2008
    #1
  2. Feb 8, 2008
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
    Joined:
    Sep 20, 2002
    Messages:
    3,437
    CF dual Friction and CF II clutches claim greater holding power. This power is most evident at high RPM applications.

    The Centerforce I clutch assembly will do all any of us will ever ask from our Hurricanes and Dauntless. Pointless to spend more $$$ on clutches that have properties we wont use.

    I think DanStew did install a Dual Friction behind his V6, IIRC he had problems with the weights on the fingers.

    Really, a LUK clutch will probably be all any of us will ever need.
    I ran a CF I clutch behind my V6, never had a problem with it in 12+ years... but if I was doing it today I'd probably just go with a new LUK.
     
    lynn, Feb 8, 2008
    #2
  3. Feb 8, 2008
    evanjm

    evanjm Yeah, it's got an F-head.

    Leesburg, VA
    Joined:
    Sep 13, 2006
    Messages:
    408
    Yeah I agree with the II and DF clutches, that's a good point.

    I think I'll definitely go the Centerforce route, probably just a I or II, but how do I get one to mate up to a 134 with a T90?

    I remember reading that one for some car in the 60s, like a falcon maybe? matches the splines on a T90...

    Any ideas?
     
    evanjm, Feb 8, 2008
    #3
  4. Feb 8, 2008
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
    Joined:
    Sep 20, 2002
    Messages:
    3,437
    T90 should be 1 1/8 - 10 spline, pretty common size.

    .629 pilot appears unique to the T90, T89, T84 trannies.
     
    lynn, Feb 8, 2008
    #4
  5. Feb 8, 2008
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    I'm curious as to why you would want to spend all that money on a clutch that is going to be way overkill on a 60-hp engine?

    Even if you do find a clutch disc that fits the input shaft, I'm thinking that you might have trouble getting the throwout bearing & carrier aligned so that it works OK inside the stock bellhousing. There really isn't very much "extra" space in there and the stock release fork is pretty weak by modern standards...
     
    w3srl, Feb 8, 2008
    #5
  6. Feb 8, 2008
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,379
    I'm with Steve. Honestly a stock clutch should do you fine.
     
    Glenn, Feb 8, 2008
    #6
  7. Feb 8, 2008
    jayhawkclint

    jayhawkclint ΜΟΛΩΝ ΛΑΒΕ

    Oklahoma City, USA
    Joined:
    May 18, 2006
    Messages:
    2,622
    Ludel, Moses. Jeep CJ Rebuilder's Manual: 1946 to 1971. Cambridge: Bentlley , 2003. P239-242.
     
    jayhawkclint, Feb 8, 2008
    #7
  8. Feb 8, 2008
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,524
    I'll join this group of thinkers.
    I don't know how your stock mechanical rod type linkage will hold up to more pressure; you might be breaking ears off the rods if it's too stiff.
    there are mods you can do to the clutch linkage rod.
     
    jpflat2a, Feb 8, 2008
    #8
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