Oil pump torque?

GregM
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Oil pump torque?

Postby GregM » Sat Apr 14, 2018 1:51 pm

I am putting a new oil pump on rebuilt 318 engine and the spec's say 35lbs. That sounds kind of light for something I really don't want to come loose once I have the engine back in the boat. I put some high temp lock tight on them. How tight do you guys recommend?

EWRice
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Re: Oil pump torque?

Postby EWRice » Sat Apr 14, 2018 7:31 pm

Go by the book. 35lbs sounds right. I have never seen an oil pump come loose, ever.
Muskegon Lake
1972 32' Express flybridge
"AL13"
Twin 318s
On board air & prime 920
1963 Thompson Super Sea Lancer
Graymarine 327
1961 Alumacraft 12'
'55 10hp Johnson

Fastjeff
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Re: Oil pump torque?

Postby Fastjeff » Sun Apr 15, 2018 7:08 am

For your piece of mind, you could Lock Tite the bolts.

Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington

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Busia
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Re: Oil pump torque?

Postby Busia » Sun Apr 15, 2018 6:18 pm

Go by the size not the purpose of the bolt or cap screw. Rule of thumb is people over tighten little bolts and under tighten big ones. I have fought Loctite that the factory used, so I don't use it much. If the bolts are important, just safety them. Drill the heads or get drilled bolts and safety wire them, or use a plate under them with a tab that will bend up against the flat of the head, or with nuts and bolts use a castellated nut and a cotter key
BUSIA
located in Ketchikan, Alaska. Gods country
32 foot Marinette express. (no fly bridge)
twin 350 Crusader (Chev 350) engines
1:1 Borg Warner velvet drive transmissions
Closed cooling (antifreeze in the engine)
Proud to be retired IBEW