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body mount replacement question

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Old Dec 8, 2015 | 09:32 AM
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Default body mount replacement question

The body mounts on my 68 convert do not look that bad, but they are, of course, almost 50 years old and hard as a rock. I'm considering replacing them, but need to prioritize this work against several other tasks on my to-do list. For those of you who replaced their mounts with neoprene ones, how much difference did you notice afterward for better ride quality, reducing rattles, etc.? RA
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Old Dec 8, 2015 | 09:47 AM
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Originally Posted by ronarndt
The body mounts on my 68 convert do not look that bad, but they are, of course, almost 50 years old and hard as a rock. I'm considering replacing them, but need to prioritize this work against several other tasks on my to-do list. For those of you who replaced their mounts with neoprene ones, how much difference did you notice afterward for better ride quality, reducing rattles, etc.? RA

The later years used solid aluminum mounts so the hardness doesn't matter at all.
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Old Dec 8, 2015 | 10:32 AM
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Originally Posted by toobroketoretire
The later years used solid aluminum mounts so the hardness doesn't matter at all.
Do you mean later than C3? My '82 has rubber mounts. They're squashed and cracked. This isn't high on my to-do list, but I was wondering if they can be replaced one at a time. This is another area I never had to work on with my previous cars. Does the body have to come up for this?
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Old Dec 8, 2015 | 10:43 AM
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Default body mounts

Originally Posted by 454Luvr
Do you mean later than C3? My '82 has rubber mounts. They're squashed and cracked. This isn't high on my to-do list, but I was wondering if they can be replaced one at a time. This is another area I never had to work on with my previous cars. Does the body have to come up for this?
454Luvr- if you loosen all of the mounts- or at least all on one side- you can use a pry bar and wedges to take the weight off the mounts to get them out. If you go to one of the chain saw supply websites, they sell hard plastic wedges for tree felling. Steel ones will also work, but have the risk of scratching the paint on your frame and anything else they touch. Small blocks of wood work also. You can wrap a crow bar with duct tape to also protect the paint. Take them out one at a time and put the new one back in, replace the bolt, but do not tighten until all of the mounts on one side are done. Or- you can take the body off the frame and re-paint it while it is exposed. RA
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Old Dec 8, 2015 | 11:17 AM
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Originally Posted by ronarndt
The body mounts on my 68 convert do not look that bad, but they are, of course, almost 50 years old and hard as a rock. I'm considering replacing them, but need to prioritize this work against several other tasks on my to-do list. For those of you who replaced their mounts with neoprene ones, how much difference did you notice afterward for better ride quality, reducing rattles, etc.? RA
RA

1968-72 Corvettes used aluminum body mounts, 1973+ used rubber.

If they are rubber on your car they have already been replaced at some point.

The rubber mounts are thicker then the aluminum so this must be taken into account if switching from one to the other.

John

Last edited by JC68; Dec 8, 2015 at 11:48 AM.
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Old Dec 8, 2015 | 11:22 AM
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That's funny, I was wondering if it might be possible to drive wooden wedges in, one side at a time. The plastic ones sound like the ticket, wasn't aware of those. Thanks!
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Old Dec 8, 2015 | 12:52 PM
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Default body mounts

Originally Posted by JC68
RA

1968-72 Corvettes used aluminum body mounts, 1973+ used rubber.

If they are rubber on your car they have already been replaced at some point.

The rubber mounts are thicker then the aluminum so this must be taken into account if switching from one to the other.

John
Thanks, John. I presumed they were rubber, so someone before me replaced them with rubber (not neoprene) bushings and they probably have compressed. I may loosen a couple of them and poke with a screwdriver to see what shape they are in. Price on neoprene kits is about half of the stock metal kits and neoprene does not corrode or compress (much). Plus, I found some flashy red ones that will match the color of my car. Not stock or show quality, but neither am I. RA
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Old Dec 11, 2015 | 11:23 AM
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I just pulled the body of the '71 I'm working on. The mounts were aluminum, and several came out in pieces. I too was surprised they weren't rubber..

Neoprene it is!
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Old Dec 11, 2015 | 11:50 AM
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Here is a youtube video of a guy replacing them on his early C3.

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