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willysmjeeps.com :: View topic - Oil pump cover gasket and oil pressure
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Oil pump cover gasket and oil pressure

 
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Scott21
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Joined: Apr 12, 2007
Posts: 226
Location: Central New Jersey

PostPosted: Wed May 20, 2020 7:30 pm    Post subject: Oil pump cover gasket and oil pressure Reply with quote

Hi everyone. Today I reindexed my distributor so I could time the motor without the distributor hitting the block. Now runs perfectly. I had to replace the oil pump to block gasket. While I had the pump out, I made a gasket for the cover with some gasket material I had laying around. Started motor. Oil pressure looked low. I have the 120 psi gauge. I pulled the oil sender and hooked up a mechanical test pressure gauge. I have 8 psi at idle and 28 -32 at higher RPM. oil pressure seems to have dropped about 5 psi. Could too thick a cover gasket cause a drop in pressure? The old cover gasket was significantly thinner. 1952 M38

Any thoughts are greatly appreciated.

Thank you for your time,
Scott
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Scott

1952 M38 Photos at: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Scott21&op=modload&name=gallery&file=index&include=view_album.php
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Scott21
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Joined: Apr 12, 2007
Posts: 226
Location: Central New Jersey

PostPosted: Wed May 20, 2020 7:41 pm    Post subject: Reply with quote

After more research, I thinking that it will affect the pressure. I still would like to hear some opinions.

Thanks,

Scott
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Scott

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wesk
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Joined: Apr 04, 2005
Posts: 15106
Location: Wisconsin

PostPosted: Wed May 20, 2020 7:49 pm    Post subject: Reply with quote

Both pump drive gear teeth spacing and face to cover spacing effect oil pressure. Stick with the original design gasket for the end plate.
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

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Scott21
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Joined: Apr 12, 2007
Posts: 226
Location: Central New Jersey

PostPosted: Wed May 20, 2020 8:39 pm    Post subject: Reply with quote

Thanks Wes, much appreciated.

Scott
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Scott21
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Joined: Apr 12, 2007
Posts: 226
Location: Central New Jersey

PostPosted: Fri May 22, 2020 1:22 pm    Post subject: Reply with quote

Got a scrap piece of the proper thickness gasket paper from the high-end restoration shop down the road a bit from my house. 15psi at idle warm and 50 psi at rpm warm.
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