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One piece front crank seal for an 8BA?

Discussion in 'The Hokey Ass Message Board' started by Dirty Dug, Sep 2, 2012.

  1. Dirty Dug
    Joined: Jan 11, 2003
    Posts: 3,213

    Dirty Dug
    Member

    After 3000 miles my AV8 is leaking like a sieve. I've seen those one piece front seals and before I tear into it over the winter I'm wondering if any of you have had any experience with these as opposed to the conventional rope seals.
     
  2. Dirty Dug
    Joined: Jan 11, 2003
    Posts: 3,213

    Dirty Dug
    Member

    No one? Maybe it's a slow day for flathead guys, I'll wait for them all to come home.
     
  3. Vergil
    Joined: Dec 10, 2005
    Posts: 839

    Vergil
    Member

    I have two 8ba av8's, both with Reds Headers lip seals and have had 0 problems with them. I do use the thin stainless sleeves they sell to cover the spiral oil grooves on the cranshaft pulley.

    Vergil
     
  4. Can you post a photo of the AV8? I am just having my 59A assembled and was planning to use the rope seal as I have read they work well, maybe that move should be reconsidered.
     
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  5. mtflat
    Joined: Jan 28, 2003
    Posts: 418

    mtflat
    Member

    I've been running them for 11 years in a daily driver 48 pickup.
    There are two styles I'm aware of -

    the simple seal from Red's

    and the other that I'm more familiar with - it has an aluminum shell that encases the seal and is machined to completely fill the rope cavity. I smeared a little RTV on the shell and dropped it in and have had no leaks. A lot more expensive than the bare seal, but I think it was worth it.
     
  6. Doctor Detroit
    Joined: Aug 12, 2010
    Posts: 974

    Doctor Detroit
    ALLIANCE MEMBER

    Who sells this style? If anyone has pictures of these seals, please post them. This is good info for future reference.
     
  7. Dirty Dug
    Joined: Jan 11, 2003
    Posts: 3,213

    Dirty Dug
    Member

    Thanks for the replies. I've seen them from many aftermarket suppliers but don't want to do this twice. What makes the ones from a particular supplier better than another? Are they the best way to go? I have to replace the crank pulley as well so this isn't a stretch if it's worthwhile.
     
  8. Youll find the that the lip seal sold by flathead vendors is a standard size available at any bearing shop..
    The problem is that it is actually slightly too big for the cavity which isnt actually sized to a standard seal size, and the cavity also tends to not be totally round,once you compress the pan gasket. What I have found is that as you tighten the sump down, it actually distorts the seal slightly oval.. and then it leaks. for this reason, I have gone back to rope seals. The last two engines I have done with rope seals leak less from the front than my car, which has the rubber lip seal. Make of this what you will.
     

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