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

Smashed my valve covers with a hammer

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Old Jul 7, 2015 | 07:37 AM
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Default Smashed my valve covers with a hammer

I broke my valve covers a little, hammering out the age-hardened o-rings with a 3/8 to 1/4 adapter socket that turned out to be a little too close to the same diameter. O-ring mating surfaces are shattered. Anyone else ever done this?
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Old Jul 7, 2015 | 08:01 AM
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Originally Posted by LouisvilleLT4
I broke my valve covers a little, hammering out the age-hardened o-rings with a 3/8 to 1/4 adapter socket that turned out to be a little too close to the same diameter. O-ring mating surfaces are shattered. Anyone else ever done this?
No,
I took a pair of long nosed pliers and twisted into center, picked out the brittle pieces left behind. but if your looking for a replacement set I saw a pair the other day

http://stores.ebay.com/Mirrock-Corve...rt=nc&_ipg=192


or you could send pat at c4parts in the forum vender/parts section a PM and see if he has any.

Last edited by s carter; Jul 7, 2015 at 06:51 PM.
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Old Jul 7, 2015 | 06:29 PM
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A picture!

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Originally Posted by s carter
but if your looking for a replacement set I saw a pair the other day

http://stores.ebay.com/Mirrock-Corve...rt=nc&_ipg=192
Ouch, that's a three with two zeroes after it!

I guess I'll have to glue the o-ring mating surface and somehow sand it well enough to seal.
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Old Jul 7, 2015 | 06:49 PM
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Originally Posted by LouisvilleLT4
A picture!





Ouch, that's a three with two zeroes after it!

I guess I'll have to glue the o-ring mating surface and somehow sand it well enough to seal.
you may get lucky its not that badly broken the worst is it leaks ugly then you know its 3 with two Zeroes
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Old Jul 7, 2015 | 06:54 PM
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OK! send me your Hammer, I'll put it in a safe place for you..
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Old Jul 7, 2015 | 06:56 PM
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You really pulled a bubba on that I would replace would be worried about more chips getting in.
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Old Jul 7, 2015 | 06:58 PM
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Originally Posted by desertmike1
OK! send me your Hammer, I'll put it in a safe place for you..
but he would still have a rock.
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Old Jul 22, 2015 | 09:59 PM
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Lots of tubes of superglue and grinding later, and a shot of black paint, and I have the following:

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I also found out for everyone that epoxy will not bond to the composite material the valve covers are made of:

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Since every surface of the seal is now out-of-round or not flat, I will try some Permatex #2 sealant (not too sticky, cures soft) all over the surfaces, avoiding getting it on the o-ring other than that so that it is free to slip into a sealing form.
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Old Jul 22, 2015 | 10:15 PM
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Louisville - that repair looks great. After all the work you have put into it, I hope it holds for you. Good luck.


P.S. And thanks for the heads up on not being to use epoxy on these types of valve covers.
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Old Jul 24, 2015 | 11:52 PM
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A hammer is one of the cheapest tools in the shop to buy but one of the most expensive ones to use. Patience is free and saves the most money by far.
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Old Jul 25, 2015 | 08:39 PM
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well, I don't know if JB Weld will bond, but it might be worth a try; had good luck with it doing interior console repairs, but they weren't subject to oil, which may have as much to do with the failure to bond as the material itself;

now with that said, can you find some washers whose O.D. matches the I.D. of the recess in the valve covers? drill out the center of the washer to the necessary I.D. and then glue them into the recesses to provide a reinforced smooth sealing surface? most of my interior plastic repairs involved fabricating all sorts of small metal tabs and reinforcements which were then bonded to the original, and may I say fragile, plastic.
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