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

replacement radiator what to get ?

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Old Jan 17, 2005 | 03:27 PM
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Default replacement radiator what to get ?

i'm almost certain thats next to replace, i smell coolant, , i changed the overflow bottle, mine was old and leaked, i'm not loosing water, and i'm pretty positive my heater core is fine, no steam on windows when running defroster, i'm positive the water pumps not leaking or dripping either,

i'm interested in the big aluminium radiator, no plastic reservoir stuff, who makes em and how much? 1990 l98 convertible, also best outta box fit etc etc. TIA everyone

any group deals happenning on these that we know of?
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Old Jan 17, 2005 | 03:35 PM
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Here's what I did..........a little trimming on the rubber mounts, but very straightforward

http://www.dewitts.com/

Edit: Link works now

Last edited by Caboboy; Jan 17, 2005 at 04:35 PM.
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Old Jan 17, 2005 | 03:55 PM
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If I had to replace, I'd definitely go with something bigger and better, like a BeCool/Griffin/Ron Davis...etc.
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Old Jan 17, 2005 | 04:24 PM
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Originally Posted by vader86
If I had to replace, I'd definitely go with something bigger and better, like a BeCool/Griffin/Ron Davis...etc.
alum.
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Old Jan 17, 2005 | 05:12 PM
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I went to www.autoradiatorsdirect.com and got a new radiator delivered to my door for $140. No budget for an improved radiator, but it gets the job done.
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Old Jan 17, 2005 | 05:23 PM
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Be cool for me.

160 stat
Edelbrock hi perf water pump
Trans cooler
8 qt oil capacity
Manual elec fan on/off switch

in 90 degrees I can run pass after pass and I rarely get over 200 degrees water temp.

Matt383
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Old Jan 17, 2005 | 05:24 PM
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After blowing out both plastic side tanks at a road course, I installed a BeCool, and I love it.

If I was shopping for a new one though, I'd get one with a built in engine oil cooler, makes hooking one up a lot simpler, and then you don't have to worry about putting in and engine oil thermostat.
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Old Jan 17, 2005 | 07:02 PM
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Originally Posted by guywade
i'm interested in the big aluminium radiator, no plastic reservoir stuff, who makes em and how much? 1990 l98 convertible, also best outta box fit etc etc.
I am confident you will find ours to be the best fit and priced competitively. You do have to trim a little of the rubber cushions but that's just to get the thicker core in there. Everyone's model will require the plastic fan shroud to be trimmed or shimmed back for the thicker core as well.



DeWitts Site
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Old Jan 17, 2005 | 07:07 PM
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For those of you that have a 1984-89, we make a Direct Fit second to none. With this one we matched the mounting exactly, and even include custom rubber mounts. You change nothing! DeWitts 84-89 model
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Old Jan 17, 2005 | 08:58 PM
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Originally Posted by Tom DeWitt
For those of you that have a 1984-89, we make a Direct Fit second to none. With this one we matched the mounting exactly, and even include custom rubber mounts. You change nothing! DeWitts 84-89 model


I had no problems with my Dewitt rad in my 85, I trimmed the rubbers and installed it in in less than 1 hour. Runs nice and cool!
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Old Jan 17, 2005 | 09:10 PM
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I got my Dewitt rad at Carlisle and love it.
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Old Jan 17, 2005 | 09:49 PM
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Originally Posted by Tom DeWitt
For those of you that have a 1984-89, we make a Direct Fit second to none. With this one we matched the mounting exactly, and even include custom rubber mounts. You change nothing! DeWitts 84-89 model
Very nice! Now, if only there were a group purchase for those, with a ten percent discount and free shipping.....I'd be the first one to sign up!
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Old Jan 17, 2005 | 10:36 PM
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Originally Posted by lallend
Very nice! Now, if only there were a group purchase for those, with a ten percent discount and free shipping.....I'd be the first one to sign up!
That's a great idea. I'd jump in on that deal also.
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Old Jan 17, 2005 | 10:49 PM
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Originally Posted by lallend
Very nice! Now, if only there were a group purchase for those, with a ten percent discount and free shipping.....I'd be the first one to sign up!


You could count me in also, I'm currently in the market for a new one. The one I have has the plastic sides and sprung a very small leak at the seam. Stop leak has stopped it for now, but need a new one soon.
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Old Jan 18, 2005 | 07:47 AM
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Here are my thoughts -- for what it is worth.

For a new radiator, there are several options.

There are several good aftermarket larger radiators -- and there is the original size.

But, I differ on how I select what I want -- once again, in my opinion, bigger is not necessarily better. It depends what you want to do with it and your symptoms.

If you have an engine that runs too hot -- does it run too hot at speed/high rpm/heavy load, or at low speed in town? Keep in mind, you are dumpiing the most heat into a radiator when you are applying the most power -- at speed, or under a heavy load. So, if it doesn't overheat at speed/heavy load, the cooling capacity of your radiator is sufficient and bigger may not be what you want.
A radiator with a smaller tube cross section creates more coolant turbulence; and, at idle, this turbulence causes more coolant molecules to come in contact with the interior surface of the tube to allow the heat to conduct to the exterior. So, a radiator that is too large may cause the coolant, at idle, to move lazily through the tubes and not conduct as much heat through to the outside. The result may not be what you intended.

If you go to a larger tube radiator, you may have to use a higher volume water pump to create the needed turbulence at idle.

If your engine overheats at idle but is OK at speed or heavy load, it may be insufficient coolant turbulence or insufficient air flow at idle.

If your engine spends most of the time under heavy load, bigger may be what you want. If your engine spends most of its time lazily going down the highway or in traffic, stock (with more airflow and turbulence) may be what you want.

Tom Piper

Last edited by Tom Piper; Jan 18, 2005 at 08:00 AM.
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Old Jan 18, 2005 | 02:04 PM
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Default ...alum radiator.....

i just put in an aluminum radiator on my 94 c4.....purchased from eckler's....i think the same one is sold at midamerica......but was less expensive than the one from ecklers. the mechanic that put in said it looked great....there were a few mods that he did to get it installed but evidently, alum radiators are used extensively in the performance world, ......alum has greater thermal efficiency......and i have already noticed cooler, more stable temps....

Last edited by corvette1271; Jan 18, 2005 at 02:09 PM.
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Old Jan 19, 2005 | 12:22 AM
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Originally Posted by lallend
Very nice! Now, if only there were a group purchase for those, with a ten percent discount and free shipping.....I'd be the first one to sign up!
Originally Posted by NitrousSam
That's a great idea. I'd jump in on that deal also.
Originally Posted by 87Clwy


You could count me in also, I'm currently in the market for a new one. The one I have has the plastic sides and sprung a very small leak at the seam. Stop leak has stopped it for now, but need a new one soon.
Heyy, three's a "group" right? How bout the group purchase request?

If so, I bet even more would like to get in on the deal!!
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Old Jan 19, 2005 | 03:02 PM
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Originally Posted by corvette1271
i alum radiators are used extensively in the performance world, ......alum has greater thermal efficiency......and i have already noticed cooler, more stable temps....
That is why the factory radiator core is aluminum.

RACE ON!!!
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Old Jan 19, 2005 | 07:27 PM
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When the time comes for me to replace my factory unit - I'm going with one of these:

http://www.absoluteradiator.com/Prod...asp?idProd=301
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Old Jan 19, 2005 | 07:51 PM
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Originally Posted by TM-96CE
When the time comes for me to replace my factory unit - I'm going with one of these:

http://www.absoluteradiator.com/Prod...asp?idProd=301
That may very well be the best, high capacity, all aluminum radiator for our cars, yet. That is what *I* would use, if I needed it, too. Be advised that Tom DeWitt is a forum sponsor and member. You can buy directly from them, through the forum. In the left matgin on the topics page, there is a list of forum supporters. If you scroll to the very bottom, about three names up, you will see the category, "Restorations, aluminum radiators". That is a link directly to DeWitt's web site.

RACE ON!!!

Last edited by CFI-EFI; Jan 19, 2005 at 07:55 PM.
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