SAAC Forum

The Cars => 1965 GT350/R-Model => Topic started by: kram350 on December 26, 2021, 10:23:28 PM

Title: '65 exhaust
Post by: kram350 on December 26, 2021, 10:23:28 PM
Redoing my '65 exhaust after 35 years and not sure how the header collector reducers were attached to the intermediate pipes. Were the reducers butt welded to the intermediate pipes (leading to the glasspacks) or was there no reducers and the intermediate pipes just welded to a header collector tri-flange?  If anyone has a picture of an original exhaust setup would appreciate seeing it. Thanks 
Title: Re: '65 exhaust
Post by: texas swede on December 26, 2021, 11:34:19 PM
Here is a complete system,
Texas Swede
Title: Re: '65 exhaust
Post by: kram350 on December 27, 2021, 09:49:17 PM
Thanks, Swede
Title: Re: '65 exhaust
Post by: texas swede on December 28, 2021, 09:03:22 AM
You are welcome.
I have investigated the various measurements and come up with the following.
(Please note that these may or may not be completely accurate)
Muffler bullet=35 inches
Intermediate pipes=13 inches (please note the passenger side should have a 10 degree
kink. Looks like they laid out the pipes on the wrong side in the picture.
Texas Swede
Title: Re: '65 exhaust
Post by: texas swede on December 28, 2021, 09:48:13 AM
Like to make a clarification:
Muffler total length end to end 35 inches and bullet 30 inches.
Texas Swede
Title: Re: '65 exhaust
Post by: kram350 on December 28, 2021, 06:36:35 PM
I don't have my original intermediate pipes anymore to copy or the original headers for that matter. I had them both aluminum spray coated 45 years ago and that is all that what was left of them, the coating! They rusted from the inside out under the stairs of my mothers house in foggy San Francisco. I just couldn't remember if the reducer was part of the pipe or separate. Thanks for the info. 
Title: Re: '65 exhaust
Post by: mygt350 on December 28, 2021, 07:52:52 PM
Does the SA manual indicate what degree exhaust tips were cut at? Appears something other than a right angle.
Title: Re: '65 exhaust
Post by: mygt350 on December 28, 2021, 08:01:05 PM
Assume both tail pipes were same length and bent identically? Meaning there wasn't a left and right side tail pipe?
Title: Re: '65 exhaust
Post by: Bob Gaines on December 28, 2021, 08:08:27 PM
Does the SA manual indicate what degree exhaust tips were cut at? Appears something other than a right angle.
I am only aware of personal observations to indicate how the pipe was cut . Many were cut at a angle.
Title: Re: '65 exhaust
Post by: mygt350 on December 28, 2021, 08:59:42 PM
Any idea of original tail pipe diameter?
Title: Re: '65 exhaust
Post by: Bob Gaines on December 28, 2021, 10:32:50 PM
Any idea of original tail pipe diameter?
2 inch
Title: Re: '65 exhaust
Post by: mygt350 on December 29, 2021, 01:14:22 PM
Hard to tell from Bo's picture to see if the intermediate, muffler and long pies were black or some combination. What would be considered correct for a Mar-Apr numbered car?
Title: Re: '65 exhaust
Post by: Bob Gaines on December 29, 2021, 01:51:15 PM
Hard to tell from Bo's picture to see if the intermediate, muffler and long pies were black or some combination. What would be considered correct for a Mar-Apr numbered car?
As the picture indicates the pipes and muffler were black but the turn out pipes were mostly bare steel but some were black also.
Title: Re: '65 exhaust
Post by: kram350 on December 29, 2021, 08:47:25 PM
Anyone know how far the pipes stuck out at the rockers?
Title: Re: '65 exhaust
Post by: CharlesTurner on December 30, 2021, 01:06:08 AM
Couple of original examples...
Title: Re: '65 exhaust
Post by: kram350 on December 30, 2021, 09:35:18 PM
Thanks Charles. Looks like the color is natural aluminized, correct? 
Title: Re: '65 exhaust
Post by: CharlesTurner on December 30, 2021, 10:27:06 PM
I'd say yes for the bottom pic, but the one above could be either with black/white photo. 
Title: Re: '65 exhaust
Post by: mygt350 on December 30, 2021, 10:32:15 PM
Appears pipes were shipped "natural" as well as painted black. Bo's (Texas Suede) picture shows side pipes as natural with the intermediate pipes black. Jesse at Shelby Parts and Restoration said his experience was that if intermediate pipes were black, so were the side pipes. Would venture to say there were some cars that had the intermediate pipes one coating with side pipes another. Suspect a Judge would not "ding" you if painted intermediate and side pipes or left them natural or mix and match...I was told the intermediate pipes were not welded to the flanges until after the "mufflers" and side pipes were properly positioned.Then, spot welds were done to the flange before they were removed and welded all way around. Lot or processes were evolving at SA. Can easily imagine painting tailpipes might have been one of those that evolved...
Title: Re: '65 exhaust
Post by: Bob Gaines on December 30, 2021, 11:07:21 PM
Appears pipes were shipped "natural" as well as painted black. Bo's (Texas Suede) picture shows side pipes as natural with the intermediate pipes black. Jesse at Shelby Parts and Restoration said his experience was that if intermediate pipes were black, so were the side pipes. Would venture to say there were some cars that had the intermediate pipes one coating with side pipes another. Suspect a Judge would not "ding" you if painted intermediate and side pipes or left them natural or mix and match...I was told the intermediate pipes were not welded to the flanges until after the "mufflers" and side pipes were properly positioned. Then, spot welds were done to the flange before they were removed and welded all way around. Lot or processes were evolving at SA. Can easily imagine painting tailpipes might have been one of those that evolved...
Jesse had better review the vintage photo of the exhaust system because it clearly contradicts his statement you said he made. As I said before the turn out pipes (side pipes) were ether left natural steel pipe (not aluminized) or painted  black like the headers ,flange pipes and glass pack muffler typically were. Pretty simple really. If someone deviates from those two typical configurations in concours expect push back. A entrant should have any reasonable proof available to explain their point of view.
Title: Re: '65 exhaust
Post by: mygt350 on December 31, 2021, 10:13:37 AM
So from your Judging perspective in Concours class, flange and muffler were typically black, unless there is some evidence showing car as delivered, had something different. Side pipes should be black, but could be natural without a deduction.
I will send Jess that photo and leave it at that. Interesting discussion at least.
Title: Re: '65 exhaust
Post by: kram350 on December 31, 2021, 06:54:44 PM
If not aluminized maybe painted silver? One original assembly line picture appears that the exit pipes were unpainted. If left bare you would have thought rusty pipes would have been a warranty or at least a complaint issue?
Title: Re: '65 exhaust
Post by: Bob Gaines on December 31, 2021, 08:24:11 PM
If not aluminized maybe painted silver? One original assembly line picture appears that the exit pipes were unpainted. If left bare you would have thought rusty pipes would have been a warranty or at least a complaint issue?
Bare steel or painted black. If silver paint was tried on some it was not typical . As Special likes to say "that's just the way is is". :)
Title: Re: '65 exhaust
Post by: texas swede on January 01, 2022, 03:04:16 PM
There is another picture from the assembly line at LAX that matches exactly what Bob is saying.
Of course, the picture is staged but I have no reason to doubt that they are the correct ones.
Texas Swede