Exhaust system question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jeff's72C10* · 05-12-2019, 06:20 PM

Hi everyone. Been a long time since I've own one of these, like 25 years. Picked up a 72 C10 with a 350 in it a little over a year ago. A few weeks back it developed an exhaust leak on the drivers side pipe. PO seems to have put duels on it. Anyway, I took the pipe loose today and looks like the donut gasket is none existent anymore.

My question is according to the 72 service manual I have. It shows an extension in the pipe that seems to hold the gasket in place. This part was not there when I disassembled it. I would assume this part needs to be there?? Any advise would be appreciated, Thx

Wrenchbender Ret · 05-12-2019, 06:45 PM

They come with a short piece of pipe that fits snugly inside the donut. I used to make them by cutting a short piece off of an exhaust pipe tubing. That keeps the exhaust flame off the donut. Chevy dealers have an iron donut that stands up better.
George

Jeff's72C10* · 05-12-2019, 06:59 PM

Quote:

Originally Posted by Wrenchbender Ret

They come with a short piece of pipe that fits snugly inside the donut. I used to make them by cutting a short piece off of an exhaust pipe tubing. That keeps the exhaust flame off the donut. Chevy dealers have an iron donut that stands up better.
George

Thank you sir for the info. Appreciate it.

Astro-Balls · 05-12-2019, 09:27 PM

Cool, I never knew that..

geezer#99 · 05-12-2019, 09:42 PM

Look like the ones in here.
https://www.gardnerexhaust.com/exhau...aust-system-2/

05-12-2019, 06:20 PM	#1
Jeff's72C10* Active Member Join Date: Mar 2018 Location: Del Rio Posts: 166	Exhaust system question Hi everyone. Been a long time since I've own one of these, like 25 years. Picked up a 72 C10 with a 350 in it a little over a year ago. A few weeks back it developed an exhaust leak on the drivers side pipe. PO seems to have put duels on it. Anyway, I took the pipe loose today and looks like the donut gasket is none existent anymore. My question is according to the 72 service manual I have. It shows an extension in the pipe that seems to hold the gasket in place. This part was not there when I disassembled it. I would assume this part needs to be there?? Any advise would be appreciated, Thx __________________ Previous C10's 69 SB CST - sold 72 Cheyenne Super LB - sold

05-12-2019, 06:45 PM	#2
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: Exhaust system question They come with a short piece of pipe that fits snugly inside the donut. I used to make them by cutting a short piece off of an exhaust pipe tubing. That keeps the exhaust flame off the donut. Chevy dealers have an iron donut that stands up better. George

05-12-2019, 09:27 PM	#4
Astro-Balls Registered User Join Date: Feb 2019 Location: Nor Cal Posts: 822	Re: Exhaust system question Cool, I never knew that.. __________________ 1968 C20 Fleetside 396 4sp PS PB AC CST . https://www.youtube.com/watch?v=RWK8GgWD4uA

05-12-2019, 09:42 PM	#5
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,731	Re: Exhaust system question Look like the ones in here. https://www.gardnerexhaust.com/exhau...aust-system-2/



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