Register now to get rid of these ads!

When is a engine block rusted too far?

Discussion in 'The Hokey Ass Message Board' started by 1930roadster, Nov 17, 2009.

  1. 1930roadster
    Joined: Nov 9, 2009
    Posts: 323

    1930roadster
    Member

    Hi all, I came from a world of big block muscle cars and custom harley, so i never had to ask this... but, i have to do a model A with a V8 flatty.
    Looking at some of these 49-51 flathead blocks that sat out in fields for years rusting away. The head gasket area on the block is heavily pitted, but i see them being purchased!? Can these be milled down that far or is there some special head gasket or something? When is it junk? Thanks
     
  2. tubman
    Joined: May 16, 2007
    Posts: 7,547

    tubman
    ALLIANCE MEMBER

    Conventional wisdom says that flatheads have notoriously thin decks and should be decked the minimum if at all. If they're really "heavily pitted", I'd look elsewhere.
     
  3. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,681

    Bruce Lancaster
    Member Emeritus

    If you live where it freezes even infrequently, rust is the least of the problems with an open engine. An engine that has held water through a freeze is almost certainly a dead player and flatheads have areas within thatt cannot be checked even with a magnafluxing.
     
  4. blown49
    Joined: Jul 25, 2004
    Posts: 2,212

    blown49
    Member Emeritus

    Post a picture of the block deck surfaces. We may have different theories after viewing them.

    Jim
     
  5. RichFox
    Joined: Dec 3, 2006
    Posts: 10,020

    RichFox
    Member Emeritus

    I don't know anything about Ford flatheads. On my Plymouth that sat out for years I took .035 off the deck and still had lots of pits. But i also had enough clean iron I felt it would seal. And it did. That was the last Plymouth PB that I converted to OHV and it did eventually pull a stud out of the deck and kill itself. But there was a lot of other stuff going on there.
     
  6. 1930roadster
    Joined: Nov 9, 2009
    Posts: 323

    1930roadster
    Member

    OK, so i'm not losing my mind... as my pop use to say.. "there is an ass for every seat". I'll just hold off til i find a runner. Thanks men!

    Paul
     
  7. You mean like this? This engine was so bad, a rod cap rusted itself to a head stud! They had a cover over it too.....

    Its headed for the dumpster.
     

    Attached Files:

  8. wolfgang_90
    Joined: Feb 11, 2007
    Posts: 19

    wolfgang_90
    Member
    from Albany, NY

    do tell.. I have 3 blocks like this..
     
  9. Screamin' Metal
    Joined: Feb 1, 2009
    Posts: 506

    Screamin' Metal
    Member
    from Oklahoma

    If all else passes.....if you got pits and its not in the bore area,,,,,clean the crap outta it....grind it till its clean, and braze it up....it'll be as good as new, then if there some of it into the bore area.....sleeve it....
    heavy pitting in the valve area....do the same. then put your new seats in if ya got to..., Make it work!
    Suck it up guys....we're suppossed to be hotrodders here! Where's your since of adventure!!!!!
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.