72 Exhuast Blackout

[Terry M.]

Re: 72 Exhuast Blackout

As thick as the original "paint" was, I con understand how one might think it was applied with a mitt -- but the runs make that doubtful. It has been a while since I looked, but I think the runs are toward the top as installed, making it unlikely they were painted when installed on the car.

[Patrick H.]

Re: 72 Exhuast Blackout

As thick as the original "paint" was, I con understand how one might think it was applied with a mitt -- but the runs make that doubtful. It has been a while since I looked, but I think the runs are toward the top as installed, making it unlikely they were painted when installed on the car.

Do you recall when that Bob Cook article was written?

[Terry M.]

Re: 72 Exhuast Blackout

Summer 2000, Volume 27, Number 1, page 38
A Little Bit of Paradise Found by Bob Cook

I can still remember John Woods talking about that story.

[Terry B.]

Re: 72 Exhuast Blackout

I didn't see an answer to Don's question of what paint would be best to use on the black out process. I was caught in the rain this past summer with my '68 that I had painted earlier and most of my black out is gone. Seems to have a sticking problem.

Thanks,

[Terry M.]

Re: 72 Exhuast Blackout

I suspect most folks use "Bar-B-Q" black. If the muffler is reasonably clean and free of grease before you start this should work fine. As Patrick H points out, this doesn't look much like the original "paint." But then only a handful of us have seen original muffler black-out, and close is better than nothing. I wish I knew what would provide the high-build of the original -- but I don't. One other clue -- I remember the original coating came off easily with a gasoline soaked rag. Not that anyone would try that today.

[Tom H.]

Re: 72 Exhuast Blackout

I didn't see an answer to Don's question of what paint would be best to use on the black out process. I was caught in the rain this past summer with my '68 that I had painted earlier and most of my black out is gone. Seems to have a sticking problem.

Thanks,

We even had that problem with Corvettes in the 80's and 90's with C4's. GM even had a service bulletin for paint peeling and falling off of the exhaust. Bulletin 93-97-10 from Feb of 93. Here was the "fix"

[Terry M.]

Re: 72 Exhuast Blackout

Anybody want to call them and see what you get? This could be interesting.

[Jim M.]

Re: 72 Exhuast Blackout

Was this blackout of the mufflers done on 68/69 years?

[Terry M.]

Re: 72 Exhuast Blackout

Black out was on factory original exhaust systems during 1968-1972. I think the mid-year guys (at least some years) like it too -- and it didn't stop at 1972 as you may not by that Tom posted, I just don't want to claim any knowledge beyond 1968-1972.

[Don L.]

Re: 72 Exhuast Blackout

Terry's mention of Bar B Que Black (hi-temp) is what I had in mind unless a better idea comes from this group. Any?

Also, should my plan be to invert the mufflers for painting "in case" the paint should happen to run as it sounds happened () in production?

[Patrick H.]

Re: 72 Exhuast Blackout

Terry's mention of Bar B Que Black (hi-temp) is what I had in mind unless a better idea comes from this group. Any?

Also, should my plan be to invert the mufflers for painting "in case" the paint should happen to run as it sounds happened () in production?

It's what I used on my 72 and the other one in the pics above, though I once used Rustoleum with a brush and it lasted for several years. The mufflers don't get so hot that they're going to burn off too much paint. Feel free to improvise.

Patrick

[Patrick H.]

Re: 72 Exhuast Blackout

FYI, I pulled out the article of Bob Cook's from Summer 2000.

The one muffler shown is painted heavily, with the top half of the muffler in the photo. The paint extends to the mid portion of the top of the muffler and unfortunately there is not a picture of the bottom. The paint also hit the front of the muffler but only the "outer" half of it, with no paint obvious on the pipe. The exit pipe, however, appears black in a photo of the exhaust tip.

The front of the muffler does have a tag with the part number. IIRC it should be yellow background, black numbers.

I wish Bob had included more pictures, or that he still visited this board (assuming he's still around - TX still lists him as a Chapter officer).

Patrick

[Terry M.]

Re: 72 Exhuast Blackout

FYI, I pulled out the article of Bob Cook's from Summer 2000.

The one muffler shown is painted heavily, with the top half of the muffler in the photo. The paint extends to the mid portion of the top of the muffler and unfortunately there is not a picture of the bottom. The paint also hit the front of the muffler but only the "outer" half of it, with no paint obvious on the pipe. The exit pipe, however, appears black in a photo of the exhaust tip.

The front of the muffler does have a tag with the part number. IIRC it should be yellow background, black numbers.

I wish Bob had included more pictures, or that he still visited this board (assuming he's still around - TX still lists him as a Chapter officer).

Patrick

White paper tag with black numbers. The paper turns slightly yellow from age and the "paint" residue.

It is hard to tell about Bob because there are at least two Bob Cooks (the other id from Ohio) active in NCRS, but I think Texas Bob has been on the board from time to time.

[Edward J.]

Re: 72 Exhuast Blackout

I just finished the install on my gardner system and did the black out on the mufflers , I decided to used the dupli color high temp engine paint it was low gloss black which I feel was a very close match to the original color maybe not as thick as described, but the pic of pro team car seems that it did'nt appear as though there was alot of panit on it, and at the meet here in Marlbrough, Mass. I looked at the car from what I could see on the ground the paint didnt appear that thick and a few runs in the paint.

I took some pic.s of my new system the system I'll post later to get the reveiws .

[Dave S.]

Re: 72 Exhuast Blackout

I just finished the install on my gardner system and did the black out on the mufflers , I decided to used the dupli color high temp engine paint it was low gloss black which I feel was a very close match to the original color maybe not as thick as described, but the pic of pro team car seems that it did'nt appear as though there was alot of panit on it, and at the meet here in Marlbrough, Mass. I looked at the car from what I could see on the ground the paint didnt appear that thick and a few runs in the paint.

I took some pic.s of my new system the system I'll post later to get the reveiws .

Ed,
The right muffler on that white 72 was replaced (header and center pipe are original). The left side exhaust is original all the way to the engine. I don't know what you have for photos but that may clarify things a bit.