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  1. #1
    Join Date
    Jun 2014
    Location
    Swansea
    Age
    57
    Posts
    160

    Remote clutch servo

    Hi All

    Have any of you put a remote clutch servo on and was it of any help with a heavy clutch?

    The reason I ask is I have an RV8 with a competition clutch, the master cylinder is .75 and the slave is 1” (the same as used in some TVRs). I changed the master cylinder from a smaller one to the 1” one and this did help ease the clutch pedal a little bit. However, my left knee is not brilliant these days and in heavy traffic it is getting more difficult and painful. So, I was thinking would a remote servo help.
    Any comments/help would be welcome.

    Also, if you have used one what is the best ratio?

    Many thanks

    Rob
    Rob

    AK Gen I - 4.6l Rover V8, Stage III heads, MC1 cam
    On the road March 2019

  2. #2
    Join Date
    May 2004
    Location
    Cowbridge, United Kingdom
    Age
    63
    Posts
    10,397
    Hi Rob,
    I did it on my first Dax.
    Remote servo mounted at the front of the chassis.
    It certainly helped.
    You will notice a miniscule delay between foot press and operation but you get used to it.
    I also had to fit a vacuum reservoir as the engine had a big cam that didn't give a lot of idle vacuum.
    I think it was an MGB servo.
    https://www.ebay.co.uk/itm/163540981...4AAOSwtSRdEEKc
    other ratios are available.
    Kev Davies
    South Wales Area Rep. UKCC Membership Secretary
    DAX Mk4, 383 Chevy Stroker, Tremec. SOLD
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    Dax De Dion LS2 and T56 IVA'd June '17 SOLD
    1965 Ford Mustang 289 Convertible SOLD
    In build- Hawk 289 Sebring Awaiting IVA

  3. #3
    Join Date
    Jun 2014
    Location
    Swansea
    Age
    57
    Posts
    160
    Thanks Kev, very helpful.

    Rob
    Rob

    AK Gen I - 4.6l Rover V8, Stage III heads, MC1 cam
    On the road March 2019

  4. #4
    Join Date
    Oct 2018
    Location
    Shipston-On-Stour
    Posts
    733
    Rob, I think I have a remote servo in the workshop if you want a secondhand one. I bought it new and used it for a year or two. If you are interested, let me know and I will dig it out
    Chris
    Dax with 1964 Dual Quad 427 and Toploader box

  5. #5
    Join Date
    Jul 2012
    Location
    NW England
    Posts
    759
    Quote Originally Posted by Rob P View Post
    ....I changed the master cylinder from a smaller one to the 1” one and this did help ease the clutch pedal a little bit.

    Rob



    The larger master master cylinder should give you a harder (but shorter) pedal not softer/easier
    I fitted a 1” for just that reason.

  6. #6
    Join Date
    Jun 2014
    Location
    Swansea
    Age
    57
    Posts
    160
    Sorry, my first post should have said I changed the slave cylinder from a smaller one to a larger one (1").

    Thanks

    Rob
    Rob

    AK Gen I - 4.6l Rover V8, Stage III heads, MC1 cam
    On the road March 2019

  7. #7
    Join Date
    Jul 2012
    Location
    NW England
    Posts
    759
    Quote Originally Posted by Rob P View Post
    Sorry, my first post should have said I changed the slave cylinder from a smaller one to a larger one (1").

    Thanks

    Rob

    Ah, yes that would have the opposite effect.

    I also eventually went to a concentric release bearing which has helped lighten the pedal to some extent without increasing travel (may be even less now) but not massively.

  8. #8
    Join Date
    Oct 2018
    Location
    Shipston-On-Stour
    Posts
    733
    I changed to a hydraulic release bearing to minimise effort. Much better but quite a lot of work

  9. #9
    Join Date
    Jun 2014
    Location
    Swansea
    Age
    57
    Posts
    160
    Yes, I did think of the hydraulic release bearing but as you say it is a lot of work. I will see how the servo works first and if it does not quite do the trick the release bearing may be the way to go. I have no issues with removing the gearbox etc as I only put a rebuilt LT77 gearbox in last year and it was not a to bad job. With hindsight I should have done it then but as we have probably all done it you don't think of everything at the time. Never mind I am hoping the servo will work for now.

    Thanks

    Rob
    Rob

    AK Gen I - 4.6l Rover V8, Stage III heads, MC1 cam
    On the road March 2019

  10. #10
    Join Date
    Dec 2016
    Location
    isle of wight
    Age
    57
    Posts
    153
    I had them fitted to 2 of my previous cobs and it helped a lot slightly better than the other but has a lot to do with pipe and cylinder bore aparantly, hopefully someone who's is more technically minded than me will advise

    A local garage supplied and fitted for around £400 ..ish

    Good luck

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