SCARRMRCC wrote: In reply to DaveEstey: perhaps I mistyped.. once it collects into a single pipe, it is still painted...
That's how I understood it. Mine is true dual all the way. Thinking of trying a crossover mid-way this summer.
SCARRMRCC wrote: In reply to DaveEstey: perhaps I mistyped.. once it collects into a single pipe, it is still painted...
That's how I understood it. Mine is true dual all the way. Thinking of trying a crossover mid-way this summer.
Ok. That is what I figured..... After I posted.
SCARRMRCC wrote: In reply to N Sperlo: How high are we talking? the 500 degree stuff, or the 2000 degree stuff?
Close to 2000 I think. I believe it didn't take well to the smooth pipes.
Scar, I would be glad to coat your header with ceramic black satin, good to 2000 degrees. My email: don49ataoldotcom
Are people on here coating the insides of their turbo manifolds?
And/or any success with coating a cast manifold?
Yep, as a co-worker of mine once said when asked how something could rust if made from stainless steel, "It is called stain LESS, not stain DON'T or stain NEVER." 
I've had good luck with ceramic coating on a mild steel header which was painted poorly and rusting, but it was also in a normally-aspirated appilcation.
Really old thread bump here.
The new daily is getting an eBay stainless header and exhaust. Last time I had a header on a protege5, underhood Temps went through the roof. To the point I was worried about the nearby radiator fans.
So, my plan had been heat shielding and header wrap. Saw two different grades at o'reilly, with very similar price after discount. Lava rock and titanium.
Which do I want?
Also, we sell a header wrap spray. Have no idea what the purpose is.
Now living in the south, using the car daily, while getting it fully warmed up, and having the header properly supported to reduce strain, flexing, and vibration, will I dramatically shorten life expectancy? I'm only expecting 2 years and 100k out of it. It is ebay Chinese crap after all.
What header wrap? How far back? How much overlap o the wraps?
Following with interest...
A data point on the "lava" wrap.
It works fine but hardens over time, eventually becoming very brittle. Just rubbing up against it can easily break it and then it starts unwrapping. What bothered me more was that over its life, it constantly shed little "splinters" of fiberglass/"lava". In some cars it may not be a big deal but in my mid-engine convertible, I worried about the circulating air bringing into the cab and me inhaling it. After noticing that virtually everything in the engine compartment had a light sparkly coating of the stuff that was enough, out it came.
I'm currently a fan of the thick spray-on coatings - surface has to be properly prepared though.
KyAllroad wrote: What do we think of this? https://www.amazon.com/Thermo-Tec-14004-Manifold-Cylinder-Straight/dp/B000TXU580/ref=sr_1_6?s=automotive&ie=UTF8&qid=1467036732&sr=1-6&keywords=header+heat+shield
OH WOW, I need that for the Escort's header in the worst way. I'm getting one, now. Easily removable, and will actually look a bit less silly than the heavy duty Reynolds Wrap on the header now. Umm, should that last bit have gone in the Minor Confessions thread?
Everyone I've talked to about header coatings says the Swain coating is really the only one that works for keeping heat from radiating out and doesn't end up destroying the header.
http://swaintech.com/race-coatings/race-coating-descriptions/white-lightning-exhaust-coatings/
It's not cheap.
Ojala wrote: Good lord what kind of "stainless steel" did they pawn off on you? Makes me glad to drive southern cars.
That's what stainless looks like when you wrap it. There are some grades of stainless that won't do that but it would cost something like $1000 in raw materials to make a header.
I had a 1/8" wall mild steel header get paper-thin after wrapping it. The wrap came off with huge flakes of metal.
DaveEstey wrote: The racingbeat header on my RX7 is certainly stainless, but after being cooked by 1800 degree temps it's certainly rusty.
RB is making them out of stainless now? That kinda sucks IMO, mild steel is far less crack-prone. And there is something to be said for the sound damping qualities of .25-.375" wall thickness tubing and muffler parts.
I ditched it years ago for a custom header made from mild steel.
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