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Discussion in 'The Bench' started by LouV, Jun 4, 2021.

  1. LouV

    LouV Silver Level contributor

    I have been going around fixing some minor oil leaks so the car is ready to go. It is a 72 350.

    1st Question
    What is supposed to go in this hole? It is threaded.

    Motor bottom.jpg

    Next Question.
    The fuel pump is bolted to a machined mount that is then bolted to the block. It is leaking oil a bit. Is it safe to remove the mount or can I just remove the plug screwed in to the side? When can I get a replacement gasket?

    Bonus question - What is the purpose of the threaded cap on the mount?

    As always, thanks for answering my stupid questions.

    Lou
     
  2. Max Damage

    Max Damage I'm working on it!

    1 - That timing case fits multiple engines/oil pans and that hole is not used in your case.

    2 - not sure? My fuel pump is bolted directly to the drivers side of the timing case with nothing between the two? Maybe a photo?
     
  3. chrome yellow

    chrome yellow Well-Known Member

    Are you talking about the oil pump and not the fuel pump?
     
    Max Damage and john.schaefer77 like this.
  4. LouV

    LouV Silver Level contributor

    I will rechck and take a picture, if I can get near it.
     
  5. LouV

    LouV Silver Level contributor

    I apologize for an error. I know I shouldn't trust my memory but if I remembered to not trust my memory, I wouldn't have to not trust my memory. I think .I had been working on the fuel line all afternoon and forgot the next leak was on the other side of the block. Here is what is leaking:
    IMG_20210609_134147755_PORTRAIT.jpg

    Is this hard to rebuild? Are replacement parts availble or as a rebuilt unit?

    Thanks.
     
  6. buicksWILD

    buicksWILD Well-Known Member

    Not too difficult mine was held on by flat head screws which I though was weird. Ended up stripping one but got it out. Spray them down with bolt penetrante first. Then its just a thin gasket in-between might have a hard time scrapping it off but you'll get it.

    I think I got my gasket at orileys.
     
  7. Max Damage

    Max Damage I'm working on it!

    Be careful. If it's a tiny leak and you have good oil pressure ignore it. The timing case is aluminum and you cannot go crazy tightening these cap screws. Also there is one hidden under the oil filter.

    If you need to:

    After you disassemble this, you need to be sure to prime the oil pump before starting the car! You can do this with a special tool that reaches down through the distributer hole and turns the pump, or by packing the cavity of the oil pump with Vaseline prior to reassembly. The position of the lid of this pump is make or break for the function of the oil pump.

    Also your oil pressure sender (I think?) looks crazy to me. It's right behind the pump (and above) on the right(passenger) side of the timing case.
     
  8. 2dtrak

    2dtrak Gold Level Contributor

    My guess Is the machined piece your referring to on oil pump is a booster or wear plate that is sandwiched between the oil pump cover and timing cover . The odd angle to oil pressure sender could be from elbow for factory gauges that isn’t installed at correct angle. Hard to tell from pic. Won’t hurt anything as long as sender isn’t hitting anything thing or pulling on sending wire
     
  9. LouV

    LouV Silver Level contributor

    Before I start this project, can somebody send a picture of how the pressure sender should be installed?
    Thanks,
    Lou
     

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