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Author
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Topic: Radiator Paint
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Troy
Gearhead Posts: 424
From: Newton, Iowa
Registered: May 99
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posted 07-22-2001 12:51 AM
   
Hello all,I want to repaint my radiator and was wondering if any of you have any suggestions on a paint type. Any tips on how you went about the procedure would be welcome also. Thanks ------------------
Troy Esrey
1970 Mach 1 351C 4V
Visit Troy's 1970 Mustang Mach 1 Page
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Doc
Gearhead Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001
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posted 07-22-2001 03:49 AM
I take it out, clean it with spray brake cleaner and after it drys shoot it with any old semi gloss black spray paint from 4 angles each side. If it has a trans cooler in it plug the fittings so when you turn it over to paint the other side some oil doesn't dribble out and get on the cleaned surface.
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mellowyellow
Gearhead Posts: 5739
From: So. Fl.
Registered: Aug 2000
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posted 07-22-2001 08:16 AM
I take my radiators to be repaired I always say NO PAINT----NO PINTURA They put that sticky black stuff all over it. I use Krylon semi flat 1613 for that original look. Even gloss on the tanks top would look OK, and then paint it like DOc says.
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SteveLaRiviere
Administrator Posts: 33988
From: Saco, Maine
Registered: May 99
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posted 07-22-2001 02:10 PM
Be sure to use lacquer, or radiator specific paint. Enamel prevents the radiator from radiating heat.------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
Ford. The closer you look, the better WE look!
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mellowyellow
Gearhead Posts: 5739
From: So. Fl.
Registered: Aug 2000
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posted 07-22-2001 02:23 PM
Krylon falls somewhere in between drying as fast as lacquer and with good adhesion. One of the things about lacquer is that it does not bond as well as other paints. It needs a primer, where as Krylon doesn't. Enamel is too thick and does inhibit heat transfer. That's why I could never understand the paint that they use in radiator shops. It is thick, and requires drying time. What radiator specific paint is on the market for the home user?
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SteveLaRiviere
Administrator Posts: 33988
From: Saco, Maine
Registered: May 99
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posted 07-22-2001 02:34 PM
A friend of mine used to own a radiator shop. He used the thick paint on his recores because it sealed minor leaks and prevented comebacks. He used to even admit to me that it hurt radiator efficiency.Eastwood sells radiator paint: "RADIATOR BLACK PAINT 12OZ AEROSOL $ 8.99
Item-no 10040 Z" Radiator paint goes on real thin, and you don't use a primer. ------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
Ford. The closer you look, the better WE look!
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SteveLaRiviere
Administrator Posts: 33988
From: Saco, Maine
Registered: May 99
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posted 07-22-2001 02:39 PM
Eastwood's ad copy:"Standard engine paints are too thick for radiator use because they can interfere with heat transfer and block air flow between the cooling fins. Also, standard paint tends to flake off radiator tanks. Radiator Black helps solve this problem. This acrylic lacquer factory-finish aerosol withstands 250 degree F., sprays on thick enough to cover completely, yet thin enough to not interfere with heat transfer. Great for heater cores and air conditioning condensers, too! Most radiators require 2 cans for full coverage. " I don't think a radiator needs 2 cans, though! {Unless it's for a Mack truck...} ------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
Ford. The closer you look, the better WE look!
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Doc
Gearhead Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001
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posted 07-22-2001 03:46 PM
I haven't ever found a heat problem with the paints I've used however I'd never use a thick paint on anything and I don't put on layers, just one thin coat. I did get a radiator back with that black goo that took my finger prints on it once so I never went back to that shop. I guess "any old black spray paint" should've read "anybodys thin black spray paint"  . Here lacquer is banned because we have a different sky than other places and it is harmfull to our air 
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Troy
Gearhead Posts: 424
From: Newton, Iowa
Registered: May 99
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posted 07-23-2001 12:57 AM
Thanks for the help/advise everyone. I went ahead and ordered some "radiator paint" from Eastwood.I'll let you know how it works out. Troy
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70 Pony
Gearhead Posts: 1814
From: Glenmoore, PA, USA
Registered: Jan 2000
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posted 07-23-2001 04:39 PM
I'm with Mellow Yellow here.....Krylon (The best ordinary spray paint), satin gloss with hi gloss on the top.....
Never a chip, or a peel in 5 years and it's an OEM radiator that runs at 160...Oh almost forgot....with a thermostat.... ------------------
EDDIE D
Resto Mod '70 Sport Roof
Arrest Me Red
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Ryan Wilke
Gearhead Posts: 1539
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 07-23-2001 08:01 PM
I bought the Eastwood "Radiator Black" (thru the M&M site) and I put it on an aluminum radiator. I think it looks GREAT! You're right Steve, I didn't need the second can. :/ It was fairly thin but covered just fine - I don't think it'll reduce the heat transfer efficiency of the radiator. I also used a light coat of a self-etching primer prior to the Eastwood product since it was going on bare metal. I just didn't want the aluminum radiator to coorode without some sort of protective coating. Anodizing would of been real sweet, but I don't know where I would of gotten that done... :/ Ryan
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