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Howe Hydraulic Throw Out Bearings, Good/Bad?

Discussion in 'The Hokey Ass Message Board' started by coupemerc, Sep 6, 2009.

  1. coupemerc
    Joined: Jul 16, 2007
    Posts: 406

    coupemerc
    Member

    I went to take the coupe out the other day and noticed that the clutch pedal felt spongy. I checked the clutch master cylider and it was empty. I then found a puddle of brake fluid under the bellhousing. Seems that the Howe hydraulic throw out bearing decided to start leaking fluid past the o-rings and fill up the bellhousing. It's only got about 3K miles on it and I'm sure that I installed it properly. WTF? Anyone had good luck with these things?
     
  2. Kirk Hanning
    Joined: Feb 27, 2005
    Posts: 1,603

    Kirk Hanning
    Member

    I've got almost 2 years on one and NO problems.

    Are you sure it is leaking past the seals and not the threaded fittings, just a thought? When I first set mine up it dribbled very little and that was my cause.
     
  3. OoltewahSpeedShop
    Joined: Oct 18, 2007
    Posts: 3,103

    OoltewahSpeedShop
    Member

    These bearings are designed for multi-disk clutches that take alot less travel to release.

    If it's mounted too far away from the fingers on the pressure plate it will over extend and blow the seal out of the t.o. bearing. I had this same problem a few years ago. When the clutch disk is brand new it will work fine, but when it gets a little wear on it the bearing has to travel too far to release.


    Just my experience, may not be the problem... but it sounds the same.

    Kevin
    Ooltewah Speed Shop
     
  4. Most of the race type bearings require a pedal stop so the bearing doesn't over extend and reach the end of the stroke as mentioned in the post above !! I did run a Howe on one of my dirt cars for 4 years without a problem !!! >>>>.
     

  5. Dreddybear
    Joined: Mar 31, 2007
    Posts: 6,026

    Dreddybear
    Member

    My buddy had the same problem. In the end he ended up with a McCloud bearing and NO problems..
     
  6. Yeah I remember that. I've never used a Howe, but I've never had a problem with McLeod.
     
  7. coupemerc
    Joined: Jul 16, 2007
    Posts: 406

    coupemerc
    Member

    Thanks for all the tips. I don't think that I am doing anything that is obviously wrong. I do have a stop on the clutch pedal. I'm running zero clearance between the bearing and the pressure plate fingers when the bearing is compressed. When you press down on the clutch, the bearing expands about .100 inches and that's when I can see fluid weeping from the expanded part of the unit. It's interesting that they sell rebuild kits for these things.
     
  8. NVRA #84
    Joined: Aug 24, 2005
    Posts: 361

    NVRA #84
    Member

    I always felt they were for the multi-disc and racing application. With my racer I did less clutching in two months than I did in one night with my tow truck. The racer was inspected several times during the season. That being said I feel the Howe is more for racing in circles than street, but I see no reason that it shouldn't work as long as too much isn't ask for it to do. Rebuild it and give her another try.
     
  9. I had Howe's second generation design to begin with. I have had pedal stop since day one set to allow just enough travel to disengage clutch. Yes, its shimmed properly for nearly zero play and uses the guide pin. I don't power shift/speed shift so its not getting abused. The trans isn't very easy to get in/out, guess my engineering could have had more thought toward servicability.

    Bearing leaked in less than 1000 miles, bitched to Howe and they said must have been a nicked o-ring from assembly (them, not me). Got a free o-ring kit, $5 value. Then again, less than another 1000 miles and same effin' thing! Called Howe, different guy said "oh yeah, we had problems with that design we're on a third generation design now. Last time the guy should have given you the new bearing" New free bearing ($150 value) in for 1500 miles and now this one is leaking!

    No one can see any problems with the set up, you gotta admit its pretty hard to goof up. Yet I've been sidelined by this thing THREE TIMES. Having learned my lesson I will be putting in conventional bearing and arm with an external slave cylinder.
     
  10. v8 Bake
    Joined: Dec 23, 2007
    Posts: 296

    v8 Bake
    Member

    I used to think they were great but mine leaked at 3000 miles also.I think if you take it apart to rebuild it you will find that the oring seals have been rolling and twisting instead of sliding.That has been my experiance.If anyone knows how to stop that from happening please let me know.
     
  11. I run an external Ansen slave cylinder and use silicone fluid . I have same cylinder since 1985 with no problems of leakage and it operates a heavy duty race 11" race clutch.
     
  12. D.W.
    Joined: Jun 5, 2004
    Posts: 2,070

    D.W.
    Member
    from Austin Tx.

    Run the McLeod.
     
  13. Jeff Norwell
    Joined: Aug 20, 2003
    Posts: 13,307

    Jeff Norwell
    MODERATOR
    Staff Member

    I run Mcleods....2 cars...no problems
     
  14. D.W.
    Joined: Jun 5, 2004
    Posts: 2,070

    D.W.
    Member
    from Austin Tx.

  15. Jeff Norwell
    Joined: Aug 20, 2003
    Posts: 13,307

    Jeff Norwell
    MODERATOR
    Staff Member

  16. D.W.
    Joined: Jun 5, 2004
    Posts: 2,070

    D.W.
    Member
    from Austin Tx.

    I know you are but what am I?
     
  17. #### You spelled Copy-Cat wrong GEENYUS !!! >>>>.
     
  18. Imwalkin
    Joined: Jul 29, 2004
    Posts: 539

    Imwalkin
    Member
    from Tucson, Az

    I had the same issue. If I was to do it again I would run the Mcleod. They seem to have better costumer service. Howe didnot seem to care.

     
  19. Jeff Norwell
    Joined: Aug 20, 2003
    Posts: 13,307

    Jeff Norwell
    MODERATOR
    Staff Member




    HA HA HA ...dude i wished we lived closer... we would get in a shit load of trouble:)

    But all i have is your card....

    [​IMG]
     

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