Is there a coating that protect exhaust?

circus

Member
Just replaced the exhaust on my vehicle AGAIN. The winter road salt eats the bare steel away in only a couple years. This is getting expensive.
 

The heat will burn any coating off. This sounds to me like " short tripitis" you need to find a long way home every other day to burn the moisture out.
 
Take it to a custom exhaust shop. Many of them can use stainless steel pipe and mufflers. That's what we did in Ohio before manufactures started putting it on from the factory. I think they had to in order to meet the federal emissions warranty period.
 
Bingo, Showcrop.

It's not the road salt. Exhaust components corrode from the inside.

Dean
 
Bingo, Mike.

Modern OEM exhaust systems will last the lifetime of most vehicles. Aftermarket exhaust components two or three years for most drivers.

Dean
 
Ontario Canada here, so you know they salt & sand the roads ? got a 2004 dodge Dakota, so 13 years old & 200,000 kilo's, original exhaust & still looks / sounds good thought replacing exhausts had pretty much been done away with ? can remember 20 -25 years ago , it was every other year replacing , but it has been years since I so much have replaced a muffler just my experience
I would have thought by now all auto makers would use SS for all exhaust systems ? no ?
bob
 
You got it Mike. Stainless is what he needs. My Explorer has the original system and is still going at 383K. Cost a bit more but pays off in maybe three years.
 
I thought all auto manufacturers switched to stainless exhaust systems over 20 years ago. My '96 Pontiac Bonneville still has the original exhaust system, but I do try to hose off the underside of it every May after rains have washed the road salt off the roads.

Could you mechanic be installing cheaper galvanized exhaust parts instead of stainless parts?
 
grain trucks rust off exhust about every 2-3 years gas engines, brushed on some thick white paint about 5 years ago and still no problems, good stuff, got it on line, cant remember where, still have some in a 5 gal bucket. used it on my modified four wheel drive pulling truck its to keep the heat down sure works good, think I got it at Jegs or summit racing. keeps the exhust from rusting
 
Unless stainless steel comes in a can I'm not using it. Exhaust is brand new, diy, bare bk steel and cheap as possible. 1990 vehicle worth $200.
Stonerock, try to find more info on that thick white paint please.
 
I have used a ceramic paint made just for exhaust systems and it seems to hold up well. Rattle can stuff you can find at places like O'Reilly's auto parts stores
 
VHT flameproof spray paint, comes in many colors. I painted the header on my 4.0 Jeep 3 years ago and all the paint is still on it and not discolored. Not that you would want to paint an entire exhaust, it would be difficult and expensive, but there are products out there that work and last.
https://www.vhtpaint.com/products/flameproof/


7141561_vht_SP102_pri_larg.jpg
 
(quoted from post at 06:54:32 10/14/15) In this circumstance it's obviously outside in.

Have you never noticed the water that runs out of a cars exhaust when it starts off in the morning? I have seen probably a half cup run out the tail pipe of cars taking off from a driveway or after stopping at an intersection. If the car runs long enough it can dry it out, if not it stays wet for hours and then it happens again on the commute home. Short trips are hard on engines and exhausts.
 
We're both right. I sandblasted the old system clean and found pitting with no holes & holes with no pitting. Trying only to lengthen the lifespan. Knowing it'll fail eventually.
 
After all this discussion I think your cheapest and best solution would be earplugs and open windows!!!!!!!!!!
 
(quoted from post at 05:13:00 10/15/15) We're both right. I sandblasted the old system clean and found pitting with no holes & holes with no pitting. Trying only to lengthen the lifespan. Knowing it'll fail eventually.

Now that is a new one on me,LOL! I have heard of sandblasting and coating manifolds but never a rusty old exhaust pipe. If you have a mig welder you could cut out the thin places and weld in new metal, and make those old pipes last until you have to scrap the car.
 

I would be looking for a shop that's uses the best tubing..
Atlantic Tube & Steel Aluminized tubing is as good as you can get with out going to Stainless, Stainless Aluminized..

There is plenty of cheap tubing out there that claim to be 16 ga but its not...
 
Bingo, ASEguy.

Painting/coating exhaust system parts on the outside is a waste of time and money. BTDT time and again in the 60s/70s trying to make tubing headers last. Waste of time.

The best thing I found was a so-called cold galvanize spray coating. If the pipes were properly cleaned before application, it would stay on and protect the outside quite well. Problem is, it was not possible to coat the entire inside surfaces.

Dean
 
(quoted from post at 10:06:30 10/14/15) Bingo, Mike.

Modern OEM exhaust systems will last the lifetime of most vehicles. Aftermarket exhaust components two or three years for most drivers.

Dean


You don't live in the rust belt, do you? Your statement may be true elsewhere, but up here after 5-6 years, stuff needs replacing. Of course, some folks don't run vehicles to 300K either. If you consider the lifetime of a vehicle to be 3-4 years, like some folks I know, then you're absolutely correct.
 
Years ago I had the same problem and didn't want to spend all that money on OEM exhaust but I didn't want to keep replacing it so I went to the dealer parts counter. OEM was the same price as aftermarket, was made from an alloy and lasted until I sold the car a couple years ago. 1983 Monte Carlo SS that system was at least 15 years old. And I live in NY where everything rusts.
 

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