Leaking exhaust
- Thread starter Brave
- Start date
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PJ Stough
Well-known member
It might, but my guess is that not for very long.
84southwind
Well-known member
Brave said:
The silicone will burn out very quickly as will the muffler cement. Drop the pipe on the side that is leaking and replace the donut, you can coat it with muffler cement if you feel like it may still leak. spray the nuts with a good penetrating spray a couple of times and the nuts should come off a little easier.
Gary RV_Wizard
Site Team
Agree with the others; the donuts on the headers really need to be replaced. It's a rather common problem on the Workhorse exhaust headers, so consider it a routine wear & tear item.
I have tried just about every high temp sealant on a cracked downpipe many years ago before I owned a welder. Every single one of them, including some rated for 1500F have burned off. As mentioned, the only option is replacement.
I did also try muffler cement to temporarily patch a hole in a muffler around the seams where I added sheet metal and it burned off faster than 600F red silicone. I honestly think muffler sealant is about as worthless as blinker fluid.
I did also try muffler cement to temporarily patch a hole in a muffler around the seams where I added sheet metal and it burned off faster than 600F red silicone. I honestly think muffler sealant is about as worthless as blinker fluid.
Bobtop46
Well-known member
My advice is do it right the first time.
https://www.ultrarvproducts.com/Workhorse-Parts/2007-Workhorse/2007-W22-Chassis/15020729-Exhaust-Donut-Seal-Gasket?filter=213
Give these folks a call with your VIN#
Half Hour job DIY, 2 bolts. $20
https://www.ultrarvproducts.com/Workhorse-Parts/2007-Workhorse/2007-W22-Chassis/15020729-Exhaust-Donut-Seal-Gasket?filter=213
Give these folks a call with your VIN#
Half Hour job DIY, 2 bolts. $20
