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Stupid Kid
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383 Posts
Discussion Starter · #1 ·
Is it really worth it. If I do it I will do manifolds, uppipes collector and the turbo. It would be nice if it helped spool up does it really make much of a difference. But the main thing that I am wanting is the reduction in underhood temps. If I pop the hood after driving I can't touch nothing for aat least a half hour with it burning, well not burning, but very uncomfortable you know what I mean. And do they just coat the outsides of everything or do they do everything inside and out.
 

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ΜΟΛΩΝ ΛΑΒ&
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All the BWD stuff says it's coated with 2000* stuff inside and 1600* on the outside. So I would say yes you can get both the inside and out side coated to get the most out of it.
 

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Stupid Kid
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383 Posts
Discussion Starter · #4 ·
How do they coat the insides of stuff. I don't see how it could really be sprayed to well, and dipping it would make it run and be a waste of coating is there another way of doing it.
 

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If you do not have the inside coated as well as the outside they will rust from the inside out. Speaking from experience here.
 

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Banned
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If you only chose to coat one or the other, you would only coat the inside, not the outside.

They use all kinds of tricky chit to coat the insides. Let it run down, run the nozzle way down in the port/tube. A company local to me coated the insides of my manifolds (insides only) to keep the heat out of the actual manifold material and save them from warping, expanding, shearing bolts and cracking like they were.

So far I've swapped out the driver's side with the internally coated one. After driving for a couple weeks it still doesn't look like it's been run yet from the outside :eek:

There is just no heat coming through now.

I have read data about some testing done on an engine producing around 1530 degrees egt. With a laser Thermo, the thing recorded header temps of 930 degrees on the surface and 200 degrees radiant heat uncoated.

Coated inside and out radiant heat dropped to 80 degrees. That's pretty amazing.
 

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Dark Side!
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coat most of your exhaust--the exhaust housing on the turbo, up-pipes, exhaust manifolds, etc, it is well worth it, I think
 

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OEM Moderator
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Limp Member
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Just have your hands ceramic coated. Problem solved.

I always point a shop fan directly under the hood when I need to work on my truck. Helps to cool under hood very quickly.

Any wraps out there that work well? I was kinda thinking of doing my down pipe.
 

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Yes, wraps are death to most exhaust components. They hold tremendous heat in the part itself. They will fail even the best crafted piece.

Secondly, they also hold any moisture. If it gets wet, you have a nice little sponge holding steam water up against your metal pipe.

I have personally destroyed an entire exhaust system in less than two months with wrap. It was mild steel, but still. It would have lasted YEARS otherwise no doubt in my mind.

Or to put it another way, that was about 3 years ago......the unwrapped version is still on there doing fine ;)

If it doesn't get that hot, it has room to expand/contract without much restriction, and it doesn't get wet often to hold water up against the piece, then the wrap will likely not do anything crazy.

Just don't wrap something that sees a lot of heat, or it will die.

Imagine running around in the summer naked. You're sweating your ass off, and still miserable, but you're okay (other than the snickers from the neibors). Now do the same thing with a fiberglass suit on........you will NOT be radiating any heat then. You would die faster than the exhaust, lol.
 

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Hated by All
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Yes, wraps are death to most exhaust components. They hold tremendous heat in the part itself. They will fail even the best crafted piece.

Secondly, they also hold any moisture. If it gets wet, you have a nice little sponge holding steam water up against your metal pipe.

I have personally destroyed an entire exhaust system in less than two months with wrap. It was mild steel, but still. It would have lasted YEARS otherwise no doubt in my mind.

Or to put it another way, that was about 3 years ago......the unwrapped version is still on there doing fine ;)

If it doesn't get that hot, it has room to expand/contract without much restriction, and it doesn't get wet often to hold water up against the piece, then the wrap will likely not do anything crazy.

Just don't wrap something that sees a lot of heat, or it will die.

Imagine running around in the summer naked. You're sweating your ass off, and still miserable, but you're okay (other than the snickers from the neibors). Now do the same thing with a fiberglass suit on........you will NOT be radiating any heat then. You would die faster than the exhaust, lol.
Good point.
 
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