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Technical Aluminum head porous casting.

Discussion in 'The Hokey Ass Message Board' started by TD-4834, Jan 26, 2020.

  1. TD-4834
    Joined: Jan 7, 2019
    Posts: 7

    TD-4834

    I have a rare and tricked out vintage Lucas-Laystall aluminum head for a vintage British MG race car I’m restoring. The castings were known to have porosity issues and this one has proven to be problematic. Simply attempting to chase the cracks and porous areas leads to chasing more gremlins.


    Can anyone highly recommend a shop who does work with porosity issues in alloy castings? I’m on the west coast. I’m thinking in the lines of pressure sealing with a ceramic coating (?). I have way to much invested in this head to continue using it as a glorified paperweight.
     
    kidcampbell71 likes this.
  2. Terry Buffum
    Joined: Mar 20, 2008
    Posts: 292

    Terry Buffum
    ALLIANCE MEMBER
    from Oregon

    If you are near Oakland, drive by the stadium and look for the building marked "Stop Casting Porosity" on the other side of the freeway. I know they did a 12 port GMC head about three years ago.

    If that does not work, send me your e-mail contact and I will give you the name of the guy who had that head work done. tbuffum@bendbroadband.com
     
    Chucky and wraymen like this.
  3. pirate
    Joined: Jun 29, 2006
    Posts: 669

    pirate
    Member
    from Alabama

    If there is an aluminum foundry in your area stop by and ask them if they do casting impregnating or if they have a vendor who does it that they can recommend. A lot of aluminum castings get impregnated especially if subjected to internal or external pressure in their end use. They used to seal casting with a process called Water Glass which was sodium silicate in a water base however they now have epoxy based sealants applied under pressure or vacuum. Or try doing a Goggle internet search for “casting impregnation” for the area you are in.
     
    Last edited: Jan 26, 2020
  4. TD-4834
    Joined: Jan 7, 2019
    Posts: 7

    TD-4834

     

  5. TD-4834
    Joined: Jan 7, 2019
    Posts: 7

    TD-4834



    I’m in Sacramento so I’m about 100 mi from the Oakland Coliseum. Any one in the Bay Area know the name of the company? Internet searches haven’t been particularly helpful but I may not be doing a proper word search. Seems to be various DIYer kits to do this but I’d much rather have a shop familiar with the process do the work. I tried an outfit down in the L.A. area but they don’t seem to want to get back to me and I’m tired of emails and calling them without anyone bothering to respond.

    in several months I’ll be taking the car to San Leandro for upholstery work and I’ll be driving past the stadium. I’d like to be further along with the head before then.
     
    kidcampbell71 likes this.
  6. sdluck
    Joined: Sep 19, 2006
    Posts: 2,795

    sdluck
    Member

    Contact S and S in Leandro they do midget and sprint cars engines

    Sent from my SM-J737T using The H.A.M.B. mobile app
     
  7. sdluck
    Joined: Sep 19, 2006
    Posts: 2,795

    sdluck
    Member

  8. sdluck
    Joined: Sep 19, 2006
    Posts: 2,795

    sdluck
    Member

    • S & S Automotive
      Car Parts
      4 reviews on
      Is this your business? Verify your listing
    • 14127 Washington Ave, San Leandro, CA 94578Cross Streets: Near the intersection of Washington Ave and 139th AveNeighborhoods: Floresta Gardens-Bradrick
    • (510) 357-9041
     
  9. sdluck
    Joined: Sep 19, 2006
    Posts: 2,795

    sdluck
    Member

    Where are you located?
     
  10. Deuces
    Joined: Nov 3, 2009
    Posts: 21,288

    Deuces
    Member
    from Michigan

    Send that head too Elden here in southeast Michigan.... They seal all aluminum castings from porosity.... Located on Inkster Rd. I believe....
     
  11. TD-4834
    Joined: Jan 7, 2019
    Posts: 7

    TD-4834

    I’m in Sacramento Thank you I will make contact with S&S. This wouldn’t be the S&S Automotive of Drag racing Fame would it?
     
    kidcampbell71 likes this.
  12. sdluck
    Joined: Sep 19, 2006
    Posts: 2,795

    sdluck
    Member

    Yes it is
     
    kidcampbell71 likes this.
  13. I had a similar problem with an OT Lancia 037.

    The head was porous and we used a Loctite product to seal the water passages.

    Google may be your friend.
     
  14. Dan from Oakland
    Joined: Jan 16, 2009
    Posts: 18

    Dan from Oakland
    Member

    The "STOP CASTING POROSITY" sign on hwy 880, south of the Oakland Coliseum was advertising for the company WESTERN SEALANTS.

    The sign is gone now and Western Sealants is now owned by DougCo.

    They are still in business in Oakland- here is their website link:
    http://www.westernsealant.com/

    good luck with your project.
     
    kidcampbell71 likes this.
  15. 41rodderz
    Joined: Sep 27, 2010
    Posts: 5,602

    41rodderz
    Member
    from Oregon

    Power of the hamb . :cool:
     
    kidcampbell71 likes this.
  16. seb fontana
    Joined: Sep 1, 2005
    Posts: 7,144

    seb fontana
    Member
    from ct

  17. finn
    Joined: Jan 25, 2006
    Posts: 879

    finn
    Member

    We used to use a process called vacuum impregnation for aluminum castings at the engine manufacturer I worked for.

    It was part of the production process we specified for purchased parts, but there are job shops out there that did it for prototypes.

    Just have to know what to ask for.
     
  18. bchctybob
    Joined: Sep 18, 2011
    Posts: 3,252

    bchctybob
    ALLIANCE MEMBER

    I hope the OP gets back to us with his results. It would be nice to have a recommendation from someone who has crossed this particular bridge.
     
    kidcampbell71 likes this.

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