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Technical What hydraulic throuout bearing to use

Discussion in 'Traditional Hot Rods' started by KMunn, Jul 3, 2016.

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  1. KMunn
    Joined: May 11, 2011
    Posts: 6

    KMunn
    Member

    need help figuring out what hydraulic throuout bearing to use with 93 s10 T5 trans with speedway bell housing to a flathead. Has a three finger pressure plate. I just tried the Howe 82876 hyd t/o bearing and it was really short. I had to shim it so much, I used a release bearing adapter and four of the shims supplied. When I went to bleed it, the feed line pushed right up to the pressure plate. Looking for a fix.
     
  2. DDDenny
    Joined: Feb 6, 2015
    Posts: 22,423

    DDDenny
    Member
    from oregon

    Everyone has their likes and dislikes on this subject. A friend of mine was a prof. ch***is and car builder, so he pretty much tried all the options. Had many of your issues, had the best luck with slave cylinders and T/O bearings and forks.
     
  3. I'm with Denny on this one. After helping pals with hyd. throw out systems I swore to do every thing in my power to never use one - or even try. I'm on my third successful system with all mechanical. Maybe a bit more difficult to engineer but much lower stress levels and transmission pulls.
     
  4. need louvers ?
    Joined: Nov 20, 2008
    Posts: 12,901

    need louvers ?
    Member

    I have put roughly 100,000 miles daily use on my Quarter master unit in my avatar. Wouldn't use any other brand.
     
  5. you get what you pay for. with that said i use a mcloud unit. to solve the issue of it being too far away the mcloud can use different length cones that move only the bearing closer. the lines stay back away from the pressure plate. the unit also has a threaded inner collar that allows for fine tuning. the bearing can be put in the exact spot you need. they have directions on how to measure what you need on their web site. to get a good pedal feel i use the larger bore master cylinders. i put the bleed line on top so the air can be bled out. the mclouds work so well i would never put mechanical linkage on anything again. they are kind of pricey but they do work.
     
    need louvers ? and Johnboy34 like this.
  6. X38
    Joined: Feb 27, 2005
    Posts: 17,498

    X38
    Member

    My only experience is with McLeod, which has been good. These things (hydraulic throwouts) have been discussed many times on the HAMB and the name Howe seems most ***ociated with issues, especially with the shims part of the deal.
     
    need louvers ? likes this.
  7. Schwanke Engines
    Joined: Jun 12, 2014
    Posts: 777

    Schwanke Engines
    Member

    I have had hydraulic and mechanical, and have always preferred the mechanical. Hydraulic systems seem to have almost a delay or lag effect.

    Sent from my XT1585 using H.A.M.B. mobile app
     
  8. the mccloud uses a number four an line. there is no delay. i used mine on the street and the track.
     
  9. KMunn
    Joined: May 11, 2011
    Posts: 6

    KMunn
    Member

    Thanks for all the replies, great feedback to help make my decision
     
  10. Modelabc
    Joined: May 11, 2016
    Posts: 29

    Modelabc

    Couldn't agree more....mechanical is the way to go. Sure, as you note, a bit more thought must go into the building of the linkage but much better results. I put a 40 Ford pedal ***y. in my 33 Tudor and altered the 'arm' to produce a bit more throw. Also shortened the fork arm on the chevy bellhousing to attain the required range of travel. Finished it this afternoon. Been down the road with the hyd. master cylinder/slave cylinder set-ups on several occasions in the past. Nothing but trouble in comparison to a bullet proof mechanical set-up. Only when NOTHING else in the world will work should a 'hydraulic throw-out bearing' style be used. An external slave is problem enough.
     
  11. Pat
    Joined: Jan 6, 2002
    Posts: 198

    Pat
    Member
    from Felton Ca.

    I'm running a 1st gen Howe hyd t.o. Bearing. 12 years trouble free. Just did a re-seal because I saw some weeping around it, but never had a problem. I think after 04 they updated it. Used the small 3/4" master by wilwood. I thought the Shims were easy to set up. I stacked them until the t.o. was within 1/16" of the fingers.
     
    Last edited: Jul 4, 2016

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