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Technical How exactly does this part go???

Discussion in 'Traditional Hot Rods' started by spacecowboy81, Jun 15, 2019.

  1. spacecowboy81
    Joined: Dec 9, 2012
    Posts: 66

    spacecowboy81
    Member

    I'm re-assembling my '57 371 Olds and so far there is just one part I'm not clear on and I can't find a diagram either, I checked, Motors manual, Oldsmobile Service manual, and google. This large washer with the key slot, does it just slide on the crank shaft before installing the water pump? Or after the water pump and before the pulley? If anyone knows or a picture of your engine would be helpful!!
    20190615_111414.jpg
     
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  2. Moriarity
    Joined: Apr 11, 2001
    Posts: 14,701

    Moriarity
    SUPER MODERATOR
    Staff Member

    that is an oil slinger. it goes on the crank before you put on the timing cover. cupped side facing out
     
  3. Deuces
    Joined: Nov 3, 2009
    Posts: 17,437

    Deuces
    Member
    from Michigan

    Looks like a shim for the dampner... Put that on the crank snout before you bolt on the timing cover.... Hope I'm right!!!!
     
  4. BJR
    Joined: Mar 11, 2005
    Posts: 5,600

    BJR
    Member

    What Moriarity said.
     
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  5. gimpyshotrods
    Joined: May 20, 2009
    Posts: 16,092

    gimpyshotrods
    Member

    Oil slinger. It goes on offset away from the chain.

    It keeps oil away from the back side of the seal, so it is not flooded, under braking. Bonus here, it flings oil on to the chain and sprockets.

    Most engines have a similar structure integrated into the tail end of the crankshaft, for the same reason.
     
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  6. deathrowdave
    Joined: May 27, 2014
    Posts: 1,629

    deathrowdave
    ALLIANCE MEMBER
    from NKy

    Winner winner Chicken Dinner ! Oil Slinger , with modern style seals it’s not really needed . Be sure to apply some RTV to the crank before installing the balancer to prevent leaks also .
     
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  7. alchemy
    Joined: Sep 27, 2002
    Posts: 13,971

    alchemy
    Member

    Huh? I've never heard of doing this? Is this really a thing? Oil really makes it past the super tight joint of the balancer to the crank gear, up the snout inside that tight tolerance, and leaks out around the end of the snout and the balancer bolt/washer?
     
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  8. Truck64
    Joined: Oct 18, 2015
    Posts: 3,264

    Truck64
    Member
    from Ioway

    RTV in the crankshaft damper keyway, specifically. If it's all the same I always do stuff like this figuring they wrote the book, they designed it, they oughtta know.
     
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  9. spacecowboy81
    Joined: Dec 9, 2012
    Posts: 66

    spacecowboy81
    Member

    Thanks for everyone that chimed in!
     
  10. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,666

    Bruce Lancaster
    ALLIANCE MEMBER

    Slingers can work very well! I had a late type flathead with a totally failed seal in one water pump. If I filled up the radiator with engine off, I could immediately hear a stream of water hitting the floor, and the radiator would be empty in about two minutes. If the engine was running, there was no apparent leak and I could drive the car until I shut it off. I was 18 and broke, so I handled the problem with a couple of jerry cans in the back seat for a while...
     
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