Aluminum Oil Pan Questions ?

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Aluminum Oil Pan Questions ?

Postby BearKiller » Mon Aug 12, 2019 12:21 pm

As per the picture:

Oil%20Drain%20Plug_Torque%20Values.png


I am assuming the size column is the bolt diameter; am I correct ?

Also, for the oil-pan torque values, it lists Sheet-metal at 200 inch-lbs, Cast Iron at 35 Foot-lbs, but the Aluminum section is blank.
What is the torque value for an aluminum oil-pan ?

Thanks for reading and all help is appreciated.
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Re: Aluminum Oil Pan Questions ?

Postby SWilliams » Tue Aug 13, 2019 9:18 pm

Hmm, never use a torque wrench on a drain plug yet. Just snug it down so it doesn't leak.
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Re: Aluminum Oil Pan Questions ?

Postby BearKiller » Fri Aug 16, 2019 12:43 pm

I have the thick aluminum oil-pan.
It says 35 ft-lbs for cast-iron pan on cast-iron block; this is aluminum pan screwing into cast-iron block.
With new lock-washers on the Grade-5 3/8x16 bolts, I made a best-guess and torqued them to 372 in-lbs; a bit under the 420 in-lbs (35 ft-lbs)
When I removed the pan bolts, I used a 1/4" ratchet, about 5-1/2" long, and easily backed them out with one hand.
Replacing them with a somewhat longer 3/8" torque wrench, the last few increments up to 372 in-lbs were lifting the engine off the bench and I had to brace the wrench against a block so I could use one hand on the wrench and hold the engine down with the other.
I know they are quite a bit tighter than they had been; so, hopefully, they will be good for a long time.
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City and State: Poverty Springs KY 2018 Wettest State in the Nation
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