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Straight 8 oil pan bolt torque specs/sequence?


Guest Praisedlowrd

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Guest Praisedlowrd

Hello, I'm new to the forums and new to the straight 8's. I have a 1950 buick sedanette special with the straight 8 and dynaflow. I'm in the process of cleaning her up and getting her roadworthy and installing air ride suspension. The buick has several leaks. Someone did a power steering conversion and all of the hoses and lines were shot. I replaced the hoses but it seems like there are other areas that might be leaking. Of course, everything around the power steering is completely covered in grease, dirt, and oil caked on over the years. The toque ball retainer leaked badly and I have already replaced the toque ball retainer, gaskets, and shims. The cork oil pan gasket was in bad shape and everything was soaked in oil. I dropped the pan, cleaned everything up and went back with a new gasket but I can't find any torque specs or tightening sequence. Any help is much appreciated!

A very detailed build thread can be seen here if anyone is interested.http://www.jalopyjournal.com/forum/threads/my-50-buick-special-build.934897/page-2#post-10557644

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Power steering before

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After

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Torque ball outer retainer replaced

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Oil pan

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Edited by Praisedlowrd (see edit history)
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In the absence of specifications, tighten the oil pan bolts sufficient to compress and seal the gasket but not so much that you distort the bolt openings in the pan. You might check the pan for that distortion and if present, correct it first. Sequence? Probably makes no difference but common sense says start in the middle and work towards the ends.

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In the absence of specifications, tighten the oil pan bolts sufficient to compress and seal the gasket but not so much that you distort the bolt openings in the pan. You might check the pan for that distortion and if present, correct it first. Sequence? Probably makes no difference but common sense says start in the middle and work towards the ends.

I agree and 25ft lbs should be plenty........ooops....too much.

Edited by keiser31 (see edit history)
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25 POUNDS FEET! That seems like an awful lot of torque for a pan gasket.

Terry

You are right. I don't know what I was thinkin'. I went ahead and edited my post. They should be as posted above....tight enough to seal the gasket, but not tight enough to cause a dimple around the bolt head on the pan. If they already have a dimple, flatten it out prior to installing the pan. Except for the factory stamping groove, the pan should be as flat as the mating surface on the block. The one shot of the oily pan looks like someone has already over-torqued them.

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Edited by keiser31 (see edit history)
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