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Forums -> C3 Fuel, Emission Control, and Exhaust Systems
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11/30/16 2:39pm - Original Message: 'How to preserve original exhaust?'
Crawfish
Former Member
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Burleson, TX - USA

Vette(s):
1972 Coupe 2015 Coupe

Joined: 8/19/2016
Posts: 11
When I bought my 72 I thought it needed a new exhaust system as I am 90% sure the one on the car is original. I had noted some surface rust at the time and assumed that is was rusted through. To use a football term "after further review" it appears that the exhaust system is solid, but just looks kind of discolored. My car is a low mileage example, (49,100+-) and my goal is to preserve all of the orginal stuff that remains on the car.
 
Is there something that I can coat the pipes and muffler with that will make them look more presentable while minimizing any further rust? I have heard that the double walled pipes that was used on C3s is difficult to find so I think this might be worth saving but I want my car to be presentable as well.
 
 








|UPDATED|11/30/2016 12:39:29 PM (AZT)|/UPDATED|
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11/30/16 3:16pm - Reply: 'Re: How to preserve original exhaust?'
cingraham
Former Member
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Brookline, NH - USA

Vette(s):
1976 corvette L82 red interior with white seats and door panels with ceramic headers and flow master exhaust and a Crane Cam

Joined: 5/2/2014
Posts: 46
check out this link

http://www.eastwood.com/blog/eastwood-chatter/protect-your-exhaust-inside-and-out-eastwood-exhaust-coatings./




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12/1/16 1:16am - Reply: 'Re: How to preserve original exhaust?'
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.

Joined: 7/9/2003
Posts: 399
Check out Jet Hot coating. It's good stuff and it really lowers the external temperature.

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1973 L-82 4 spd

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12/1/16 9:28am - Reply: 'Re: How to preserve original exhaust?'
gtr1999
Limited Member
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Wallingford, CT - USA

Vette(s):
1969 350 4 spd drop top 1972 350 auto coupe

Joined: 5/2/2016
Posts: 58
Well if you want to save it and use it you can have them removed and blasted clean. Then treat it with something like Eastwoods exhaust paint but it will look painted rather then bare metal. I used that on my new aftermarket exhaust 10 years ago and it still looks good.

|UPDATED|12/1/2016 7:28:55 AM (AZT)|/UPDATED|
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12/1/16 1:13pm - Reply: 'Re: How to preserve original exhaust?'
johnu
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Eagan, MN - USA

Vette(s):
1981 Corvette Two-Tone Claret color, 4 spd, C7 Vert

Joined: 5/23/2007
Posts: 507
If the car has been in Texas or the south all it's life it's probably original.  The killer for mufflers are short trips with the condensation never getting burned off inside and lying in the bottom of the muffler.   Up north rule #1 is don't run your motor in the winter when it is stored. 
My system is still original, the mufflers still sport the GM part numbers.  I cleaned the system from the cat. back 25 years ago with SOS pads and coated it with a clear spray coating from Eastwoods.  It yellowed a little early on but has maintained a nice patina to this day.  I removed the spare tire assembly at the time to clean it and provide better access to the mufflers.
 

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12/2/16 4:21pm - Reply: 'Re: How to preserve original exhaust?'
Crawfish
Former Member
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Burleson, TX - USA

Vette(s):
1972 Coupe 2015 Coupe

Joined: 8/19/2016
Posts: 11
The car was in California then Nevada all of its life. It was not driven in Winter and the mileage is correct.
 
I will check the mufflers for the GM part number.

Thanks for all of the suggestions.


|UPDATED|12/2/2016 2:21:13 PM (AZT)|/UPDATED|
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 Forums -> C3 Fuel, Emission Control, and Exhaust Systems
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