Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks



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#35282 03/14/04 02:18 AM
Joined: Jul 2003
Posts: 42
Byron Offline OP
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Jul 2003
Posts: 42
Is undercoating of a restored vehicle detrimental to the point-value/judging? :confused: Should all the undercoating be removed and not recoated during reassembly/restoring process? What color should the underside of a chevy 54 BelAir Sedan be if the undercoating is not reapplied? I've removed some of the undercoating on the body and the color has a reddish tint(best I can tell). Not sure if black paint came off with the some of the undercoating or if the reddish paint was ever painted pry to the undercoating. There seems to be quite a bit of undercoating...which is good for the metal, but bad for the removal process...any good ideas for removal? rotary wire brush? (I've noticed in another thread that brake fluid, diesel fuel, oven cleaner were mentioned)...any comments & results?
ok I'm not sure if the car was undercoated at the factory or dealership? Also, the interior of the body (namely the floors) seem to have a reddish tint paint? Is this the same kind of paint that was applied beneath the body(underside)?
Thanks for the help!


Byron
Filling Station - Chevrolet & GMC Reproduction Parts


Filling Station


#35283 03/14/04 10:34 AM
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ChatMaster - 25,000
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ChatMaster - 25,000
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The undercoating was dealer applied.The rear wheel housings only had a thin coat that was factory applied.Depending on the brand of undercoating used it was either black or a very dark brown-black.As it could be done in many different ways no two dealers or persons that app;ied it did it exactly the same.Some thought that spraying on a very heavy coat was better-some sprayed parts that others didn't.The factory recommended a thin coat and that is would accepted for VCCA judging.If the present covering needs a little "freshing up" a light coat of the spray can type can be applied over it.

The under body was either a red or gray color.Probably was a form of a red oxide or enamel.

No easy way to remove old undercoating.Some just falls off if there is rust under it-and other times its still soft and adheres well.I would remove any loose and respray entire area to blend together.


Gene Schneider
#35284 03/14/04 12:33 PM
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The best replacement for the red oxide finish I found is the red corallass sold by eastwood, the stuff is dead on and really holds up well
John


John



1954 Belair Sport Coupe
1960 2 door Impala Hardtop 348/340HP 4spd
1962 2 door Impala Hardtop 409/409 4spd
1962 2 Door Biscayne Sedan 327/250 Auto
1977 Monza Mirage 305 4 Speed
1988 Celebrity Wagon
2018 GMC Sierra 2500 HD Diesel
#35285 03/30/04 12:30 AM
Joined: Dec 2001
Posts: 21
Grease Monkey
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It's no longer called Corroless. They now call it Rust Encapsulator. It is a fish oil product & works great. Proven better than POR-15 on rust.

#35286 03/30/04 09:16 AM
Joined: Dec 2001
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I have not had to use it in a few years, good to know there is a name change on the product.
John


John



1954 Belair Sport Coupe
1960 2 door Impala Hardtop 348/340HP 4spd
1962 2 door Impala Hardtop 409/409 4spd
1962 2 Door Biscayne Sedan 327/250 Auto
1977 Monza Mirage 305 4 Speed
1988 Celebrity Wagon
2018 GMC Sierra 2500 HD Diesel
52dave #128391 10/06/08 01:53 PM
Joined: Jun 2008
Posts: 51
Shade Tree Mechanic
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Posts: 51
I must disagree that POR-15 is "proven" better than Eastwood's Rust Encapsulator. That article on the interweb is full of holes:
First of all, they didn't prep the metal or apply it per the manufacturer's instructions. Anything that isn't applied the way the manufacturer KNOWS it should be applied is just asking for failure.
Also the test didn't paint over the POR-15 like the mfr tells you. POR-15 needs to be protected from UV. UV doesn't hurt the rust-encapsulating properties, but it will make it chalk up and look ugly.


Lyn Gomes
1955 Chevy 1st series truck
lyngomes #128600 10/09/08 08:32 PM
Joined: Dec 2001
Posts: 21
Grease Monkey
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Grease Monkey
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Wow! What's the record for resurrecting a dead thread? Don't know what article you're referring to. I speak from first hand experience and I believe you may have taken my preference completely bass ackwards. :grin:


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