C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Timing Chain cover, WTF

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Old Jan 21, 2023 | 01:17 PM
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Default Timing Chain cover, WTF

Let me say this. I did this exact same job on my 84 Corvette without any problems.
I cannot get the TC cover on the car. The lip for the lower oil seal is in the way. The motor is as pictured below. I can only think of two or three ways to solve this problem.
1. Grind down the lip. NFG
2. Raise the engine get under the car. Loosen/lower the oil pan.
3. Remove the TC. put the cover in place and then put the timing chain on the gears.
4. Get under the car loosen the engine. Push the car out of the garage. Set up the hoist. Lift the motor. Assemble it on a stand. And then put it the car.

I can't believe the amount of speed bumps I am having with this job.

I sincerely appreciate all the help.

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Old Jan 21, 2023 | 01:21 PM
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On a small block, timing cover on first then install the oil pan/seal... there are ways you can trim the timing cover to circumvent this but... the correct way is to pull the oil pan.
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Old Jan 21, 2023 | 01:26 PM
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I knew you were going to say that. It's God's will that I get under this car. I know that now. I guess I can just raise the motor.
thank you.
This job is, OMG.
Like I said on my 84 NFP.
Thanks again
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Old Jan 21, 2023 | 01:35 PM
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Originally Posted by 84 4+3
On a small block, timing cover on first then install the oil pan/seal... there are ways you can trim the timing cover to circumvent this but... the correct way is to pull the oil pan.
^That is "correct"...but there have been PLENTY a mechanic that have trimmed that lip, and/or loosened the front pan bolts and slipped/rotated the cover on/into place, then tightened the pan bolts after the timing cover is secured in place. Even I have done it.
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Old Jan 21, 2023 | 02:45 PM
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Well good or bad. I am doing it the correct way. Actually the oil pan bolts are readily accessable. So it's not as hard as I thought.
I tore a rotator cuff. So working with two hands is really really I have to crawl out and press myself up with one arm. Just sucks.
I did a Bronco II oil pan on my back. Took me 11 hours. I told the service manager at Ford. He said no lift, no air tools and four wheel drive. Not bad.
Thank you for the help
Have a great night
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Old Jan 21, 2023 | 02:45 PM
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Originally Posted by Tom400CFI
^That is "correct"...but there have been PLENTY a mechanic that have trimmed that lip, and/or loosened the front pan bolts and slipped/rotated the cover on/into place, then tightened the pan bolts after the timing cover is secured in place. Even I have done it.
I didn't say don't do it. I just said the right way.

If the pan gasket was in good shape and or I had a 1 piece gasket I'd have no issue doing it. I've just never had the cover off without pulling the pan also....
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Old Jan 21, 2023 | 02:47 PM
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Trimming is tempting. But one of the reasons for all this posting. I am really trying to do this job correct and well.
I want to thank you all for your support.
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Old Jan 21, 2023 | 05:46 PM
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Then '84 is the rightest. The CORRECT way to do it, is to drop the pan, as he said. New pan gaskets/RTV after the timing cover is installed.
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Old Jan 21, 2023 | 05:53 PM
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What is frustrated to me. I don't remember having to drop the oil pan on the 84. But, it was 10 years ago. So maybe I did. In any event. I'm loose all but the 11 mm on the side and the 13 mm under the timing cover. Easier than I thought.
Good night
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Old Jan 21, 2023 | 06:14 PM
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Although some will frown upon it, at one time there was service information; suggesting to clean surfaces with brake clean and lay a thick bead of sealer in groove of timing cover. Carefully slide on timing cover, it works better if car sits overnight.
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Old Jan 21, 2023 | 06:25 PM
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When I assembled the Bronco II. An engine builder told me. Use tub sealant on the oil pan. It didn't leak. So I think you are correct.
BUr, I am not doing any short cuts on this one. I hope I have made the right decision, LoL
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Old Jan 27, 2023 | 08:00 PM
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With crank rotated to the correct position you can drop the pan without raising the engine.
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Old Jan 27, 2023 | 08:09 PM
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Thank you. Being the exhaust manifolds are not on the motor. The motor mount bolts were easy to get at. I raised the engine. Removed the oil pan. Cleaned it , got some of the rust, painted the oil pan and replaced the studs at all four corners. Tomorrow I snug it up.
Do you use any gasket sealer along the sides of the oil pan. Just wondering.
thank you again


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