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Proper sequence to torquing front/rear covers/oil pan?

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Old Mar 22, 2019 | 10:06 AM
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Default Proper sequence to torquing front/rear covers/oil pan?

Getting ready to install the front and rear covers along with the oil pan. Both covers are on loosely, and the oil pan will be going on.

Just wondering what method is correct, or do you guys use to pull everything together to ensure no leaks?

I was always under the impression that you loosely install the front and rear, then apply a dab of silicone on the 4 corners, draw up the oil pan, then lastly the front/rear covers. Is this correct?
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Old Mar 23, 2019 | 04:31 PM
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The front and rear covers MUST center on their individual seal. If they don’t, the seal will leak. I install front and rear covers, correctly on their seals...(use harmonic balancer for front seal-install damper before you tighten front cover bolts)...and torque the covers to spec. Make sure both covers are level with the pan rails, meaning each side is equal distance above or below pan rail...cover will rock each way before you torque the bolts. I usually have to trim the front and rear cover seals at the pan rail, once the cover is torqued, because it will stick up (with engine upside down) just a fuzz. Use a razor blade. I then put a dab of grey silicon on the 4 seal areas and set the pan on. Start the bolts and properly align the rear of the pan with the bellhousing flange using a long straight edge, before you torque the bolts.
I do it this way, because the two front pan bolts will pull the front cover toward the pan if the front cover isn’t torqued, causing a front seal leak. I learned this the hard way. Same with the rear cover. The two long pan bolts thread into the rear cover, and if the rear cover isn’t torqued first, the two pan bolts will pull the rear cover toward the pan, if the rear cover isn’t torqued first, cusing the rear main to become un-centered on the crank flange, which will cause a leak.
Weve discussed this sequence here before, and others do it different, apparently without issues, but this way works for me.
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Old Mar 31, 2019 | 07:54 PM
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Good info here. I had the same questions.

Thanks
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