Should I clearcoat - ClassicOldsmobile.com

Should I clearcoat

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Old December 3rd, 2016, 05:23 AM
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Should I clearcoat

After 47 years the old brake booster/master cylinder is being replaced with a nice shiny new one, should I clear coat it to preserve the new look?
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Old December 3rd, 2016, 10:18 AM
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I would.

I use a wire brush to clean them first. Then wipe it down with thinner and use a good quality catalyzed clear or the brake fluid will eat it.

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Old December 4th, 2016, 09:30 AM
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Looks great

What clear do you use?
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Old December 4th, 2016, 10:05 AM
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Thanks!

Originally Posted by Gary M View Post
What clear do you use?
I use PPGs DCU2021
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Old December 5th, 2016, 05:23 AM
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It's my understanding that brake fluid will eat through pretty much anything. If that PPG clear coat can resist brake fluid then that's awesome!
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Old December 5th, 2016, 10:35 AM
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I have had good luck with high temp engine clear coat for most applications...
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Old December 5th, 2016, 10:38 AM
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I use Krylon clear coat.
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Old December 5th, 2016, 11:32 AM
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Old December 5th, 2016, 02:05 PM
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I used the Eastwood brake grey. It came out really nice looking and doesn't look like silver spray paint it looks more like the original finish, I haven't spilled any brake fluid on it so I can't comment on that, but it does look nice. I'll try to get a pic of it.
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Old October 27th, 2017, 02:35 AM
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You must always use clear coat in these kinds of situations!
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Old October 27th, 2017, 04:48 AM
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I don't know about 67 Olds, but most GM masters were black as far as I know.
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Old October 27th, 2017, 11:03 AM
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Originally Posted by mrolds69 View Post
I don't know about 67 Olds, but most GM masters were black as far as I know.
I've never seen a black one unless someone painted it. I think they were all installed natural finish and rusted shortly there after
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Old October 27th, 2017, 06:15 PM
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Been my experience that brake fluid will eventually melt through most all finishes, especially single stage unhardened products like spray paint bombs.The issue is why are your parts getting wet with brake fluid. If nothing is leaking there should be no problem... Tedd
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Old October 27th, 2017, 09:01 PM
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The Toronado boosters in 1967 were black.
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Old November 13th, 2017, 11:48 PM
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I use Cast Blast on my cast iron manifolds. I sold my 70 Cutlass W-31 in 1999 and bought it back 2 yrs. ago and manifolds look just like the day I painted them. Should work on master cyl. too.
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Old November 14th, 2017, 08:52 AM
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Friend of mine (professional mechanic with show winning car) suggested WD40. Give it a spray, wipe off the excess, touch up every once in a while.


I haven't tried it yet myself but plan to when I install the new master cylinder in my '70 this winter. Anybody tried this?
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Old November 14th, 2017, 10:29 AM
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I have heard many people using WD40 as well as Europeans using kerosene on the underneath of their cars as protection from corrosion.

I myself used a high temp powder coat on my master cylinder, can't wait to install it.
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Old November 14th, 2017, 12:10 PM
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Cast blast here too, I’ve had MC look perfect for 5-7 years with this stuff. I’ve mostly used silicone dot5 fluid in my nice cars though.

Dot3 will ruin whatever it touches......
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