72 Exhuast Blackout

[Edward J.]

Ive done some research, I know the bottom side of muffler is blacked out along with the sides closest to the rear qtrs. panels. my question is do the pipes receive any blackout at the rear of muffler and the pipe under axle? Im about to install the gardner system on my small block, theres only one try to get this right.

If anyone has any picks of a car thats original or thats been judged to be correct that would help. thanks Ed

[Bill C.]

Re: 72 Exhuast Blackout

[Edward J.]

Re: 72 Exhuast Blackout

Bill, thanks for those pic.s there exactly what I needed.

[Patrick H.]

Re: 72 Exhuast Blackout

Note that those are service replacement pipes, not factory-installed originals. The blackout on the pipes and mufflers shown "may" differ from what was on the originals.

Patrick

[Bill C.]

Re: 72 Exhuast Blackout

Patrick,

When I purchsed the very early "W" mufflers that are on the car, they came with the blackout already on them.

I did not apply it at all.

It was very drippy and had runs down the side etc...

There is not blackout on the pipes - the few black spots are where the coating (anti-rust solutiuon) burned as the pipes got old. They had some kind of yellow-ish thick coating - kind of like cosmoleen (spelling way off here!).

[Patrick H.]

Re: 72 Exhuast Blackout

Patrick,

When I purchsed the very early "W" mufflers that are on the car, they came with the blackout already on them.

I did not apply it at all.

It was very drippy and had runs down the side etc...

There is not blackout on the pipes - the few black spots are where the coating (anti-rust solutiuon) burned as the pipes got old. They had some kind of yellow-ish thick coating - kind of like cosmoleen (spelling way off here!).

Bill,

I don't doubt that the black that was on them was preapplied. However, if I recall correctly the replacement mufflers even came from a different Walker factory building than the originals. So, no guarantee that the black is the same as original application.

Patrick

[Edward J.]

Re: 72 Exhuast Blackout

Patrick, Bill -I looked at some pictures of Terrys Mc. car they appear to be not far off from Bills car maybe a few runs in the paint at the tail pipe area, since this Blackout I will be doing is not the factory applied, I will try and copy this best as possiable, my concern was not to apply to the piping if the factry did not in front of the muffler

[Mike G.]

Re: 72 Exhuast Blackout

i saw bills car in kissimmee. great car! i have several pics of that car

[Mike G.]

Re: 72 Exhuast Blackout

here is a pic of a 3500 mile 71 i took at a ncrs show in chattanooga. dont know if it helps but here it is

[Edward J.]

Re: 72 Exhuast Blackout

Mike, thanks for the pic. this helps.this weekend I'll be installing my system and will do the black out on mufflers.

[Don L.]

Re: 72 Exhuast Blackout

I'm in line to do my exhaust system right behind Edward. I've been following this thread with interest and notice that in both Bill's and Mike's pics, the forward-facing ends of the mufflers appear to be unpainted, however, the rear ends, including pipe and hanging bracket appear to be completely included in the blackout. Am I seeing it right? Also, is there a recommendation of what blackout material (paint) is best?

[Terry B.]

Re: 72 Exhuast Blackout

I have heard that the black out was applied with a mitton, not by spray. Not sure if this is correct. I don't recall that the judging manual addresses application. If it is correct, could it be because the mufflers were on the car when the black out process took place? My application would be on an early '68.

[Patrick H.]

Re: 72 Exhuast Blackout

As I understand it, the mufflers (with the pipes welded on) were painted while hanging. As I stated above, I would not use these non-assembly line mufflers to determine how the originals were painted. The 3000 mile car that ProTeam owns (referenced in this thread) still has factory mufflers.

The best reference I can think of is an article by Bob Cook that was in the Restorer several years ago. He described the paint job and also had good photos. I can't recall the exact date of the issue, though.

Below are my mufflers. I did the ones on the 72 I'm working on a bit differently only because I added more paint. I did paint the front and back surfaces as well as the underneath based on the few originals I've seen. I would not deduct ( as a chassis judge) for variations in the paint job. I'm sure that the Walker plant had plenty of variation.

Patrick

[John H.]

Re: 72 Exhuast Blackout

I have heard that the black out was applied with a mitton, not by spray.

Terry -

"Mitting" is a myth - never happened.

[Patrick H.]

Re: 72 Exhuast Blackout

I took pics today of the orange 72 I'm working on: