Firewall/Underbody paint

Discussion in 'Chassis restoration' started by 54Rich, Oct 18, 2010.

  1. 54Rich

    54Rich Silver Level contributor

    From the sticky, I got this information:

    Frame ; Chassis Black ; Duane ; Two part chassis/underhood paint, mix to desired sheen-Trishield ; Ken
    Firewall ; Chassis Black ; Duane ; Two part chassis/underhood paint, mix to desired sheen-Trishield ; Ken


    So this assumes that you mix the two paints? Chassis black to flat and underhood to glossy? Anyone have the exact mix?

    Firewall and under body the same color? Upper dash is flat, lower is the above mix?

    Thanks, I want to do this once :beer
     
  2. SportWagonGS

    SportWagonGS Moderator

    I'll tell you what I've been using for years with great results in the Krylon Semi-Flat black, for all the frame and underhood stuff this is a great match, touch ups are easy, spray can application and you can get the stuff anywhere...on the Riv I used the "rust tough" version and the results are no less than stunning.
    Here are a couple pics, you be the judge
     

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  3. Dale

    Dale Sweepspear

    X2.:TU:
    Spray cans or quarts.
     
  4. 67GSFun

    67GSFun Johnny

    I agree with you.. Ive been using the Rust Tough on my entire radiator support and under my hood, nothing but an amazing finish!
     
  5. 54Rich

    54Rich Silver Level contributor

    That looks really nice! I want to make sure I have the correct sheen on the firewall. Looking at my original car, it's shinny enough to see a dull reflection. It's hard to see if that's the look in your pictures?

    Also, are the inner fenders and the firewall the same sheen?

    PS: I really like the Eastwood products, they last forever. Just want to make sure it's right. Here is a frame that I did in chassis black, years ago. Does this look correct?
     

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  6. Racerx88

    Racerx88 Platinum Level Contributor

  7. SportWagonGS

    SportWagonGS Moderator

    the inner fenders and firewall are the same sheen, it has a very dull reflection. the original finish was about a 60% gloss and this is pretty much a match, that frame in your pics looks a bit too shiny to me. The bottom lone here is there were variances from batch to batch so there is a lot of leeway while still being correct, Eastwood sells good stuff and you have used it in the past and are happy with it so you can't go wrong either way!
    On my Riv I tried out a different technique on painting the engine, I had correct Buick red scanned and tested that against several low milage engines(including a 22,000 mile 1970 455) and when I was satisfied I had the match correct shot the engine with DuPont Nason Ful-Thane 2K urethane automotive paint and could not be more pleased with the outcome!
     
  8. 54Rich

    54Rich Silver Level contributor

    Thanks for the responses. My firewall has more gloss that the picture that I posted, so there must have been a lot of differences from batch to batch. I already know that mine will not exactly mimik the factory slop job, the firewall is full of runs. My 5 YO can paint better:cool:

    The enigne above I had the paint matched and it does turn out really nice.
     
  9. copperheadgs1

    copperheadgs1 copperheadgs1

    After years of looking at original cars, And junkyard cars I have come to the conclusion that there are variables. I do believe the firewall was flatter than the inner wheel wells and core support which were both glossier than the firewall. The heater box on a non Ac car was much glossier than the firewall. You can see the sheen in black and white magazine pictures from 1970.
     
  10. gstewart

    gstewart Well-Known Member

    we canadian guys used Tremclad semi-gloss black for firewalls & fender liners, rad cradle, etc.. like any other paint, it does lose some lustre.
     
  11. oldrocka

    oldrocka John

    I am pretty sure the mix is 30% gloss for the firewall and 60% for radiator support etc.

    I have a GM A body paint info chart somewhere that I will try and find and post later.
     
  12. dl7265

    dl7265 No car then Mopar

    Rich,
    PPG #9423 is close as factory as you will get. I agree with Dave though I like some variation, not every single black part the same sheen. You can have your jobber mix how you like. Under body and frame DP90 Epoxy Primer (tough stuff). And you can top coat with GM restoration black if you want . I think you have to buy in a gallon though, it's a little dull underhood for me.
     
  13. oldrocka

    oldrocka John

    This may help.
     

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  14. 54Rich

    54Rich Silver Level contributor

    Thanks!
     
  15. copperheadgs1

    copperheadgs1 copperheadgs1

    I would disagree with some on that list. Not all GM cars were done the same. Lost of differences. The core support was not as glossy as the air cleaner which was pretty glossy on original cars.
     
  16. Duane

    Duane Member

    That list looks like one that would be used to restore a Chevelle not a Buick. Plenty of things listed there are wrong for our cars.
    Duane
     
  17. gstewart

    gstewart Well-Known Member

    when the atlanta buick site was active, i got the "what to paint what colour" from there.
     
  18. oldrocka

    oldrocka John

    At least it is something to go by otherwise it seems to be just a guess. Where it states gloss for the core support I used 60% gloss.
     

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