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    Cylinder Heads

    I was wondering if anyone knows where new heads can be purchased?

    I believe the project below never materialised?


    SOCTFL Cylinder Heads

    28 July 2008, 14:43
    I believe thisought tohave been announced on our own website first, but instead it has been posted on another.

    PRESS RELEASE
    Stag Owners Club.

    SOCTFL unveils new heads for Triumph Stag V8 engines!

    At the Stag Owners club National Day, on 20 July 2008 at West Midlands
    Safari Park, the Stag Owners Club Tooling Fund Ltd (SOCTFL) were
    delighted to unveil a pair of freshly made Brand New Heads for the
    Triumph Stag V8 engine.
    See Photos at

    http://s508.photobucket.com/albums/s323/SOCTFL/Stag%20Cylinder%20Heads/

    Also present was a car which has run 2000 miles with a pair of these heads.

    The heads are the property of Abinger Hammer Motors who are the main
    contractor for the project employing sponsorship and substantial
    expert technical input from SOCTFL.
    In the small Surrey village of Abinger Hammer, Abinger Hammer Motors
    have been servicing and mechanically restoring Triumph Stags for 30
    years.
    Additionally on show was a resin copy of the complex model of the
    core, which is a 3D representation of the cores in the heads and which
    are made from casting sand in production and use 18 components.
    This casting is just the first stage in a multistage process involving
    5 subcontractors.
    When a casting, made in LM25, the alloy as used in the original Triumph
    heads, passes pressure testing, the detailed machining takes place
    including the very critical line boring of the camshaft bearing
    surfaces.
    Thereafter the head is assembled with valve gear and other
    parts. The customer's existing camshafts will normally be used as they
    are generally good and new ones scarce or expensive.

    The patterns for making castings and machining drawings have been
    produced by a process called reverse engineering. This means working
    back measuring unused original spare parts.

    In the case of these heads, the measuring was done using a very
    accurate computerised process organised by SOCTFL.

    SOCTFL only supply funding and expertise and act on behalf of the Stag
    Owners Club. They own no tools, no patterns and no parts stock except
    an example library collection. They have no liability for product.
    If you are interested in these heads please contact Abinger Hammer
    Motors directly.

    This is a very exciting project, which most would have been thought
    virtually impossible and yet SOCTFL's Mike Fisher and Roger Morrish of
    Abinger Hammer Motors have pulled it off.

    Major Vehicle Manufacturers find similar projects costly and
    difficult, and when a Classic Car Club and an enthusiastic Motor
    Engineer work together to achieve component production at this level
    of complexity, it has to rank as almost being in the same league as
    Miracles.

    Hearty congratulations to those involved with much of the effort being
    purely voluntary

    Peter Howells Admin Officer SOCTFL


    For further details about SOCTFL or the Cylinder Head Project contact
    Mike Fisher at fshrmc@aol.com or on 01285 821640
    For further details about the Cylinder heads of contact Roger Morrish
    at Abinger Hammer Motors, Felday Road, Abinger Hammer, Dorking,
    Surrey, UK RH5 6QX Tel: 01306 730427



    Dave
    1974 Mk2, ZF Auto, 3.45 Diff, Datsun Driveshafts. Stag owner/maintainer since 1989.
    Tags: None​

    #2
    AFAIA, It didn't materialise.
    For what they would cost, probably not enough demand to justify manufacture.

    You can't buy new unless you happen to come across N.O.S, extremely / highly / very unlikely now.
    Last edited by NeilR; 8 February 2023, 12:57.

    Comment


      #3
      Mike and Roger did indeed pull it off and new heads were produced in small batches. Unfortunately, the various stages of the production process through casting, pressure testing, two stages of machining, and final assembly could not be sustained because each stage was technically challenging to deliver on a repeatable and reliable basis. As each new batch was planned one or more suppliers of products or services, especially foundries and machinists, declined to continue with their involvement and it became very difficult to replace them. In the end, each supplier had to consider the opportunity cost and technical / financial risk of undertaking this project vs. projects for other customers.

      Ultimately, the retail cost of new heads could not be held at anything like an affordable level when compared with the cost of re-manufacturing original heads. I have the impression that there is still a steady supply of used heads from cars being scrapped whilst the incidence of overheating and warping is less than it was owing to innovations such as header tanks, electric fans, and alternative water pumps (electric / mechanical).

      The assets used in the production process still exist and could be brought back into use in the future, but it would require a great deal of dedication and determination.​

      Comment


        #4
        …. It’s a long story.
        there may yet be a chapter or 2 to go.

        for a club to undertake it was amazing.

        not many clubs got as far as soctfl did / have.

        this kind of work forms part of my day job.

        I wasn’t that involved though.

        20 odd years on there are new techniques that could be utilised …. But still require house money investment.
        There are 2 secrets to staying on top :- 1. Don't give everything away.
        2.

        Comment


          #5
          now that we know a not profit making org is sitting on 300k. maybe it would happen
          Stags and Range Rover Classics - I must be a loony

          Comment

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