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Radiator Core Support Seals.

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Old Apr 11, 2007 | 10:17 PM
  #1  
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Default Radiator Core Support Seals.

I'm a little confused about what core support seal kit I should buy for a 1977 Corvette with an L88 hood. I'm guessing I want a good tall foam set for the upper edge of the support.

Thanks for your help everyone.

Last edited by Durango_Boy; Apr 11, 2007 at 10:24 PM.
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Old Apr 11, 2007 | 10:48 PM
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I got mine from Doc Rebuild, but ended up using some additional soft foam rubber pipe insulation to supplement the kit, I have an aftermarket hi-rise hood. I used 3-M weatherstrip adhesive to hold them in place.

Call Doc Rebuild, they are very helpful.
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Old Apr 11, 2007 | 10:50 PM
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Originally Posted by DeeVeeEight
I got mine from Doc Rebuild, but ended up using some additional soft foam rubber pipe insulation to supplement the kit, I have an aftermarket hi-rise hood. I used 3-M weatherstrip adhesive to hold them in place.

Call Doc Rebuild, they are very helpful.

So the wasn't a kit with a thick enough piece for the higher rise hoods? What did they use when the L88 hood was stock? I wonder if a kit for that car would fit a '77 okay.
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Old Apr 12, 2007 | 02:51 AM
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Are you talking about the foam strips on the top of the radiator? Mine are hard as a rock. Do I need to replace them? If so, why, what do they do?
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Old Apr 12, 2007 | 03:04 AM
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Originally Posted by Durango_boy
What did they use when the L88 hood was stock?
L88s probably were not fitted with seals from the factory. I don't think they came with fan shrouds either.
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Old Apr 12, 2007 | 07:48 AM
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The seals on top of the radiator support keep the air from flowing over the radiator and force the air thru the radiator. Makes a tremendous difference!
Bernie
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Old Apr 12, 2007 | 08:13 AM
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Originally Posted by Prestige593
Are you talking about the foam strips on the top of the radiator? Mine are hard as a rock. Do I need to replace them? If so, why, what do they do?

Yes, you will need to replace them. The key is to seal all the way around the radiator as Bernie said. You're goal is to let air go ONLY through the radiator.
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Old Apr 12, 2007 | 08:36 AM
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Default Alternate material for seals

I went to the local hardware store and purchased several roll of weather stripping. I first cleaned the radiator support with a good cleaner and applied a row of weatherstripping, then on top of that more rows as needed to fill in the gaps, it may not be factory but it defintenly works. Hope this helps Gary B.
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Old Apr 12, 2007 | 11:26 AM
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I ordered them years ago from Eckler's - I think I just bought what they said fit a 77.
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Old Apr 12, 2007 | 03:26 PM
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I have been looking for a large size foam piece about 2 inches wide for my 79 and the kits I have seen are for the top of the radiator frame to the closed hood and for the sides, too small for the area from top of radiator itself to the top of radiator frame. I guess it's off the hardware store to see if I can fabricate something.
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Old Apr 12, 2007 | 06:17 PM
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I tried the pipe foam and while it worked it did not look so hot, so I found some foam that is used on window a/c units and cut to fit, looks much better and does just as good as the pipe foam did.
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Old Apr 12, 2007 | 06:20 PM
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Originally Posted by davidm_comp
I tried the pipe foam and while it worked it did not look so hot, so I found some foam that is used on window a/c units and cut to fit, looks much better and does just as good as the pipe foam did.

Tell me more about this A/C foam. Where do you get it and what does it look like / how is it packaged?
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Old Apr 12, 2007 | 06:36 PM
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Durango/Hotshot 79 -- I replaced all mine and then switched to electric fans.

You could easily fab your own top seal to match the height of your hood and for that matter all the seals could be made. I have seen the same type of seal material at Home Depot or Lowes.

After I orderd the seal kit and saw what it consisted of, I realized it wasnt anything fancy. It would be very easy to cut the material, add a strip of 3m double stick adhesive to the bottom and you are in business.

Matter of fact if I ever reseal another radiator like this, I will fab my own set of seals -- cheaper and since the seals I got didnt fit exactly right, I could ensure proper fitment.

Cheers,

Crunch
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Old Apr 12, 2007 | 08:40 PM
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Originally Posted by Durango_boy
Tell me more about this A/C foam. Where do you get it and what does it look like / how is it packaged?
Home Depot, Lowes or any hardware store. It is approximately 2" x 2" x several feet long (usually black in color) and is used to seal the gap between the window sashes when you install a window mounted a/c unit in your house. Frost King is probably the most widely found maker of the stuff, but any foam rubber (example - foam rubber pipe insulation) will work well.
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Old Apr 12, 2007 | 11:43 PM
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Originally Posted by DeeVeeEight
Home Depot, Lowes or any hardware store. It is approximately 2" x 2" x several feet long (usually black in color) and is used to seal the gap between the window sashes when you install a window mounted a/c unit in your house. Frost King is probably the most widely found maker of the stuff, but any foam rubber (example - foam rubber pipe insulation) will work well.

Sweet, thanks so much. I'll use an electric bread knife to trim it nice to match the hood a little bit.
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