Undercoating on Chassis - under fenders and stuff?

[1200gt]

Hey, I have al my fenders / complete front clip off the car and noticed some sign of rust in certain areas like where the fenders bolt to the chasis etc. I saw same rust issues with doner cars.

I was wondering if it would be a good idea to scuff these areas and spray a coat of light-weight undercoating on these ares before putting everything back together?

One thought is that the undercoating might give-way and trap moisture????

 

[mikestang63]

i would sand, prime and paint rather than undercoat. If you do want to feel the need to put a coating on, I have heard good things about lizard skin.

 

[84Ttop]

Sand prime paint.. Imo

 

[1200gt]

i would sand, prime and paint rather than undercoat. If you do want to feel the need to put a coating on, I have heard good things about lizard skin.

Lizard Skin by name sounds expensive! I'd probably do it if I get more info. I'll investigate. For sure I know these cars are prone to rust at least in afew areas. Mike, does your car show any rust back at the trunk where those little drip-rail gusset pieces meet the rear quater panels. I do see a spot on the underside of my passenger side?

Sand prime paint.. Imo

Thanks friend, I just may end up following you advice and doing just the areas that are prone rust. Overall, my car is rust free all over, buththen it has been inside for most of it's life. I'm just looking ahead for when I do hit the streets again - maybe getting in some preventive rust maintenance....

Not ever day that you get the fenders off and access to the complete radiator framing...

 

[mikestang63]

Lizard Skin by name sounds expensive! I'd probably do it if I get more info. I'll investigate. For sure I know these cars are prone to rust at least in afew areas. Mike, does your car show any rust back at the trunk where those little drip-rail gusset pieces meet the rear quater panels. I do see a spot on the underside of my passenger side?




Thanks friend, I just may end up following you advice and doing just the areas that are prone rust. Overall, my car is rust free all over, buththen it has been inside for most of it's life. I'm just looking ahead for when I do hit the streets again - maybe getting in some preventive rust maintenance....

Not ever day that you get the fenders off and access to the complete radiator framing...

Nope as my car was repainted so if there was any it was addressed. I would stay away from undercoating as it is heavy, and if not applied properly actually promotes moisture and rust.

 

[1200gt]

Mike, I was thinking the same thing. If it gets chipped or peals a bit moisture could seep under and have it's way.
BTW, did we already talk about paint shops? I'm looking for a quality Paint Shop in our area soon...

I think i'll just stick to the basics - prime and paint on this one.


Thanks for the info, All.

BTW, if someone does come up with a new product that works better, go ahead and post it. I wil check back to see if more info developes on this project....

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Hmm, just thinking:

Would this same possibilty apply to undercoating the bottom of the car, as many do????

 

[madspeed]

mine actually has rustproofing/undercoating on it from factory, although I suspect it to be a dealer installed option? Has the holes and plugs on the GT side skirts where that stuff was sprayed up in there. Virtually every metal panel is coated, and Im happy to say shes rust free! (unless its rusted under that stuff LOL)

 

[RacEoHolic330]

If you do decide to refinish the entire bottom of the car, I had awesome success with Raptor liner. It's a 2k urethane bed liner product that comes with an application gun. You can manipulate the texture by adjusting the gun pressure and spray distance. I really like how it came out on the underside of my car. I sprayed it on extra heavy in the rear wheel wells to take the beating of rocks and road debris.

Or, if you don't want to commit to the whole bed liner thing. Eastwood's Chassis Black creates a very nice and durable finish. Would work fine for a top coat underneath, or just for the spot repairs you want to make.

 

[84Ttop]

Nice under carriage there^^^

And for a few of you stop thinking dirty... You know who you are, lol

 

[David Pepiton]

the eastwood chassis paint is great and very strong and doesnt chip easy a customer os mine has it on his 70 coupe and his 69 and it looks amazing.