I have quite a large space around the entire perimeter of the shroud - radiator interface. Is there a product that I can use to seal this area and encourge more air being pulled through the radiator ? Thanks Again.
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Re: Sealing Fan Shroud
I'm not sure of what year car you have ,but, there are fan shroud and radiator foam seal kits available for each year. Dr. Rebuild has them illustrated in the catalog. -
Re: Sealing Fan Shroud
I have a 72 454 and i just sealed mine with a "lower fan shroud extension" (this is standard on a/c cars) and a hood to radiator support foam ( to force more air through the radiator), a seal kit but there was no seal for the lower part that is from the radiator to the fan shroud it was about a 4"x 25" gap so i used some foam from home depot and it worked perfect. It runs about 190 instead of 210. EricComment
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Re: Sealing Fan Shroud
If you're referring to the same '63 L-76 from your other post, there are no shroud seals on '63s, and the gap between the radiator and shroud is about a quarter inch.
If you have an idle heating problem, you can solve it by increasing the idle speed and installing an 8" vacuum can assuming your radiator is in good condition (not a lot of internal deposit buildup) and the viscous fan clutch is performing to specification.
DukeComment
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Re: Sealing Fan Shroud
The replacement brass / copper radiator from Zips is one half inch "thinner" than the radiator it replaced. This caused a three quarter inch gap between the fan shroud and radiator around the entire perimeter of the radiator. I am through trying to fool the laws of physics with knock off parts. Dewitts radiators are made 1 hour from my house.Comment
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Re: Sealing Fan Shroud
My recommendation is to bite the bullet and buy a DeWitts 316 radiator. It has more heat transfer capability than any replacement and is engineering to fit properly. With a DeWitts 316 radiator, a properly functioning viscous fan, the '65 SHP/FI vacuum can, and two year antifreeze changes using Dexcool, you will never have to be concerned about hot running again, and the radiator should last at least 25 years.
DukeComment
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Re: Sealing Fan Shroud
You've got me beat. He's a whole TWO hours from my house.
PatrickVice-Chairman (West), Michigan Chapter NCRS
71 "deer modified" coupe
72 5-Star Bowtie / Duntov coupe. https://www.flickr.com/photos/124695...57649252735124
2008 coupe
Available stickers: Engine suffix code, exhaust tips & mufflers, shocks, AIR diverter valve broadcast code.Comment
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Re: Sealing Fan Shroud
You already know the real answer to your question - fix it right with OEM or exact repro parts. But it sounds like you've already decided not to do that. (Something I, king of the cob-jobs, would never do.)
Try the foam pipe insulation from your local Home Depot-type store. The stuff that's split with the adhesive on one of the splits. You can probably cut it up and secure it (stuff it) in the gaps.Comment
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Re: Sealing Fan Shroud
In regard to your mention of a Brass and Copper Radiator as replacement for your '63,....I highly recommend you stay away from it!
I used one in my '63 when newly fully restored back in 1992 thru 2000 and the car always ran too hot!
It frustrated the heck out of me because i feared doing damage to the (new) motor.
I use Corvette Paramedics in Mt. Holly, N.J. Ed and Ron (609)265-9215,..(They have an 800# but i can't find it,..sorry!)for almost all of my Corvette needs. They told me to get a new repro. aluminum radiator which I did.
The car's engine temp has never been better.
This is what I recommend you do.
Good Luck,
JDComment
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