Its a DN Products header - stock turbo - stock location - I will check again with the heat situation on the stock set up - which I put back in the car last night - - However - the stock set up makes no where near the under hood heat as this header did

I am going to have a heat shiled made for this header - then have it ceramic coated - I think it will pick up some power and spool up when all that heat which is radiating out of that header stays inside and is sent to the turbo

 

just coat it... FMax uses a company that has a 2000 degree coating that looks like polished metal... looks good, and seems to hold up to the SR20DET guys abuse.

 

It's not really referred to as a "header" on turbo cars. It's just a manifold or an exhaust manifold.

 

PS - What about daisy-chaining the AC fan to the other fan so it runs all the time? Or get a fast slimline fan that RRE sells for the eclipse.....it should fit the evo too. The company that manufactures your radiator might have one also.

 

Interesting idea - altyhough will prob be moot after I get the shield and the coating

 

cool sounds good. coating is a good idea and i know a buncha guys with coated manifolds (looks pretty too). i also know a buncha guys with naked manifolds (polished looks extra pretty too) (these are all older cars and paint isnt really the biggest issue with them) the heat situation maybe increased, and increased by a lot at that, but ive seen many eclipses guys with long equal length manifolds with external wastegates running hoods with smaller vents than the evo's stock vent. they drool over the evo's stock vent. and i dont think they have any paint problems - but i could feel your concern with problems occuring down the line in the future. besides worrying about paint, i dont think the rising underhood temps are gnona afect anything, i had a huge exhaust manifold (right next to the brake master cylinder) in my corolla and never had paint problems or heat issues - it did run hot as hell under the hood but nothing ever went wrong because of it. i did have the thermotec wrap on my manifold for 2 weeeks or so and it decreased the heat freaking DRAMATICALLY and decreased the sound (didnt really like it muffling the soung). i had to cut it off and destroy it so i could get a piece re-welded. waste of 40somethign dollars. never bought any more after that. it is ulgy though, but if u wrap it tight and cut the pieces nice and use the nice stainless steel hose clamps it will look pretty professional.

 

hmm id just wrap it?
maybe just some **** out so you get better airflow through the engtine compartment

 

I am very lery to wrap the header as it is sitting right there under the hood vent and will get wet every time it rains or I wash the car - - although wrapping IS what the manufgacturer of the header recommended when I called them today

To me a custom heat shield and ceramic coating will do the job nicely - - just have to be patient enough to get all the pieces in place

 

heat shield and coating is the best way to go. may even fool the techs at the dealer will look super professional. although not all that flashy, i like flashy sometimes. cant wait to see how it comes out.

 

I plan on getting the factory exhaust manifold cermaic coated as well. I understand that it can reduce turbo lag a noticable amount and reduces under hood temperatures. I might have it Extrude Honed as well...

 

I also was thinking of doing that - - but then when I came across this header I could not pass up the opportunity at this price - - by the time you extrude hone the stock unit you are getting close to the price of this entire header - BTW - the stock one is fairly smooth inside for a ctok unit - its not bad actually - - the heat coating should help a buntch in the spool up

 

Not fooling any techs at the dealer unless you get it ceramic coated in a rust color.

No way Al's car is going to a dealer for service anyway. Any 5 year old could spot those mods from the window of a jumbo jet at 25,000'.

 

might want to look at http://www.hpcoatings.com also...

 

Question: A non-coated header replacing a factory exhaust manifold will allow the heat from the exhaust to disapate better (thinner walls), hence the increased heat coming from the hood vent. Why would you want to put the heat back in to your exhaust by coating the header. The heat difference between the two (coated, non-coated) is several hundred degrees. The more heat you can get rid of before it reaches the exhaust side of your turbo, the better, right? This would ultimately lower the heat on your intake side of the turbo and also lower the heat entering the intercooler. Your motor (HP, TQ) benefits from a cooler intake charge. If you've notice in some of the European magazine's, a lot of the extremely high HP EVO's (turbo car's), the header is not coated and takes on a rust color. Myself, coming from NA motors, coating the headers takes the heat away from the engine compartment and the air intake. NA motors benefit from keeping the heat in and out the header, so coating is a benefit. Turbo cars? Am I missing something?

 

...exhaust velocity...