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installing timing chain cover gasket
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gompers
New User
Sep 11, 2009, 8:28 AM
Post #1 of 3
(3861 views)
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installing timing chain cover gasket
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need instructions on installing timing chain cover gasket on a 1982 gmc 305 cu.in. engine. also is it best to replace the water pump since I have to take it off to get to the timing cover? and is there a way to take the timing cover off without taking the oil pan off too? also need to set the quadrajet carb, check timing too. need instructions on this also. thanks!
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Hammer Time
Ultimate Carjunky
/ Moderator
Sep 11, 2009, 9:30 AM
Post #2 of 3
(3856 views)
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Re: installing timing chain cover gasket
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If the pump has some mileage on it, i would change it.
You don't have to pull the pan, just remove the bolts in the front and use some black silicone in the corners when you put the cover back on. Use a razor blade the trim the gasket even with the edge of the block.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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DanD
Veteran
/ Moderator
Sep 11, 2009, 9:38 AM
Post #3 of 3
(3853 views)
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Re: installing timing chain cover gasket
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Getting the cover off isn’t an issue; getting it back on, with the oil pan in place can be quite the challenge.
I’ve got away with removing the front three pan bolts on either side of the pan. Then jam wedges between the pan and block; yes it slightly bends the pan, but it gives you just that little extra space you need to slip the corners of the timing cover, under the lip of the block.
Reuse the old rubber seal (if not torn) that runs around the bottom of the cover; the new seal that has never been compressed, is just too thick to squeeze back under the lip of the block and oil pan.
Have lots of silicone and goop the crap out of all the mating surfaces and you may get lucky and it not leak like Niagara Falls.
So yes it can be gone; but the proper way is to remove the pan and install all new gaskets.
Checking timing; hopefully you still have the emissions decal with the timing spec and procedure stuck somewhere under the hood. There were so many different spec’s back then; along with procedures, it’s anyone’s guess. If not; stick it around 4 degrees BTDC with the vacuum advance disconnected; that will get it close enough and likely not hurt anything due to detonation.
As for adjusting the quad; I could give you the text book description, but that was intended for a perfectly running engine with a spotless new carb.
Sorry but there’s no way that an 82 305cu” with even a rebuilt carb will run worth crap using text book settings.
This is where experience comes in when dealing with carbs; you more or less set it by feel, for what the engine wants; if you’re not concerned with emission’s regulations.
Me trying to explain this setting procedure at a key board; would be like trying to explain how to tie your shoe laces; if you’ve never done it before.
You make two bunny ears, with both of the ends of the lace; then you; well you get the idea; almost impossible. You can't teach a feeling or explain it; you must remember the first time; never mind this is a fmaily forum; you get the idea, right? LOL
Good luck and keep it fun.
Dan.
Canadian "EH"
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