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For Sale/Looking For => Vendors Section => Topic started by: 935racer on December 05, 2005, 12:25:02 pm
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I am wondering what more people would be interested in, ceramic coated mild steel DP's or stainless DP's. Please feel free to add your opinions to the pros and cons of both. The ceramic coated versions will be cheaper than the stainless versions.
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ceramic. will the ceramic hold up to corrosion as well as stainless though? that is my only concern.
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The ceramic coat should hold up to corrosion very well as long as it is not being sandblasted from road debris. The thing about downpipes is that they are in the engine bay and shouldn't see abuse except from heat which the ceramic coat is more than capable of taking. Also our downpipes are made from aluminized steel, which doesn't really rust.
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The ceramic coat should hold up to corrosion very well as long as it is not being sandblasted from road debris.
In that case an exhaust wrap could easily be used for peace of mind. Inexpensive too.
I voted for ceramic coating by the way.
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I chose stainless
A good stainless DP will last at least 8-10 years minimum.
Ceramic coating is OK but it just delays the inevitable.
In the long run stainless would very likely be cheaper.
BJ
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I would like stainless.
Now, how about ceramic coated stainless?
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any idea on pricing or timing?
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Still hoping more people would cast out some opinions, I can start offering ceramic coated versions now as in tomorrow for and additional $40USD. The vendors section sure doesn't get much traffic.
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is that for coated inside of the down pipes as well?
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i like stainless. ceramic coatings are only good untill the first rock chip. then 2 years later theres a big rust hole. all it takes is 1 little rock chip to run the whole shebang.
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Just so everyone knows, the downpipes are made form alumized steel, I had a piece of it sitting out back for the better part of 2 years in our really rainy climate. And there isn't really any rust on it. The only thing that is likely gonna rust on these downpipes would be the welds and the flanges. However with the ceramic coating I can't imagine one rusting out in uder 10-15 years.
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Paypal sent :)
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I would be more interested on the coating of the inside of the manifolds as well as downpipes. Wouldnt this keep exhaust temperature where its needed? As for the outside, couldn't a protector of some sort be put to protect the ceramic coat?
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agreed. stainless pipe, with multiple ceramic coatings on the inside only. If you can prevent heat from making it into the pipe walls, no need for an exterior coating.
I chose option 'C'. Both.
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Might need to consider the vibration factor too... nearly any stainless alloy will be more brittle than mild steel and therefore more prone to crack in a diesel application, especially if there are too few supports.
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In addition to the previous post, mild steel will also cost a bit less. My car was outside in snowy/wet winter without a hood for two weeks and my fully exposed mild steel downpipe had very light surface rust. With ceramic coating and even exhaust wrap (for the paranoid), not forgetting a hood to keep the engine bay relatively dry, it'll last a long time.
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Voted stainless, have had experience with both on same application(downpipe). If I'd gone stainless the first time would've saved enough money to buy rest of exhaust system, not to mention time lost etc.. Granted my environment is rough, cold, sandy and salty, ceramic coating seems not to like quick extreme temperature change in concert with a dose of sand and salt, but if stainless is nearly bullet proof here, last forever in BC, Southern ON and SO Cal.
I think brittle concerns can be addressed with milder nickel content stainless, don't remember spec numbers but we've built some things from that type that took a pounding, flex and vibration, and didn't break. It will corrode a bit, but probably last longer than a lot of marriages and the vehicle it's on. I won't have anything but stainless on my vehicles
Just my 25 cents worth
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hey there I dont wanna chime in on someones posts but didnt the man say the welds on the stainless would rust/corrode?
Are they un-protected?
wouldnt this give justification to put a clear over the stainless even tho its welll, stainless!
I think the ceramic would be best if this is the case...
Any more in-puts?
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hey there I dont wanna chime in on someones posts but didnt the man say the welds on the stainless would rust/corrode?
Are they un-protected?
wouldnt this give justification to put a clear over the stainless even tho its welll, stainless!
I think the ceramic would be best if this is the case...
Any more in-puts?
Some shops actually weld stainless pipes with mild steel rod/wire (too much trouble to get right stuff!!) which will rust..have to use stainless rod or wire which won't rust.. Guess for totally paranoid, start w/ stainless, coat it, wrap it and don't drive it.. probably last indefinitely!!!?