Strip or Paint over the Factory Undercoating? HELP.
04-15-2012, 03:38 PM
#1
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Car: 89 IROC
Engine: 305 TPI / ZZ4 cam
Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
Strip or Paint over the Factory Undercoating? HELP.
I have some Duplicolor Bed Liner I was going to coat the underside of my IROC.
I was wondering if I have to strip the factory undercoating before I apply the Bed Liner or can I just paint over.
If I need to strip, which is the best way?
Can I simply use an epoxy primer before applying the Bed Liner.
Any help is appreciated.
Saw a few guys who stripped the underside down to the bare metal, it looks great but seems like overkill (could be wrong).
How the underside looked today. (no motor, trans or driveshaft)
I was wondering if I have to strip the factory undercoating before I apply the Bed Liner or can I just paint over.
If I need to strip, which is the best way?
Can I simply use an epoxy primer before applying the Bed Liner.
Any help is appreciated.
Saw a few guys who stripped the underside down to the bare metal, it looks great but seems like overkill (could be wrong).
How the underside looked today. (no motor, trans or driveshaft)
04-15-2012, 04:55 PM
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Car: 91 Z28
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Stock
Re: Strip or Paint over the Factory Undercoating? HELP.
Strip it, clean it, have a sandwich, clean it again, drink 5 beers, then clean it one more time before you sand it for the application of the bedliner. Don't waste your money if you don't intend to remove it all. I found that a 4" grinder with a soft wire wheel makes quick work of it. You'll be a huge mess, but it's worth it. Application of a rust inhibitor like POR15, Rust Bullet, or Rust Encapsulator to the rust areas would be advantageous before the bed liner.
04-17-2012, 06:46 PM
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Re: Strip or Paint over the Factory Undercoating? HELP.
do it the right way!!! It took me 4 days to get all that stuff off my car!
I used raptorliner in my wheel wells and paint on the underside... I was going to use raptor liner on the whole under body, but after it took me so long to prep... I decided paint would look better...
I used raptorliner in my wheel wells and paint on the underside... I was going to use raptor liner on the whole under body, but after it took me so long to prep... I decided paint would look better...
started cleaning my under body. I used hella simple green and SOS pads, they fall apart during use. but they worked better then anything else. I tried using a cup brush on my grinder. It made a huge mess (was flinging grease all over the place). I did use the cup brush, just not on the grinder... that's right, by hand (followed by SOS then a wet rag).
to give you an idea of how bad it was
I had already cleaned the driver and pass floors in this pic. but again, to give you an idea of how bad it was.
Rear to Front (you can see that I went to bare metal in some places)
Front to Rear
Trunk/Gas Tank area
to give you an idea of how bad it was
I had already cleaned the driver and pass floors in this pic. but again, to give you an idea of how bad it was.
Rear to Front (you can see that I went to bare metal in some places)
Front to Rear
Trunk/Gas Tank area
04-17-2012, 08:04 PM
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Car: Camaro RS
Engine: obd2 350 lt1
Transmission: T56
Axle/Gears: 3.23
Re: Strip or Paint over the Factory Undercoating? HELP.
looks good 
I can imagine the stock undercoating is not easy to remove, I would have been lazy enough to just have it stripped and sodablasted or something
I can imagine the stock undercoating is not easy to remove, I would have been lazy enough to just have it stripped and sodablasted or something
04-18-2012, 07:00 AM
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Car: 91 Z28
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Stock
Re: Strip or Paint over the Factory Undercoating? HELP.
Man BC, that's a lot of work there. I know, I did it with mine. Looks good. BTW, I spy a 69 RS. 
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