Header Wrap [Merged 3-8] thermal DEI headers exhaust

[91 Turbo Mitsu]

You going to regret wrapping it...... IMO

Why? Please give me a reason other than moisture because I lost a header one time due to it getting wet where it was wrapped. it rusted out in two years(wasnt stainless though)

 

[91 Turbo Mitsu]

Yes, I definetly believe so, especially with the stainless headers. Only important thing is to not wrap below the level of pipe that might get regularly splashed with water. There is alot of speculation that water can get trapped in the wrap and cause corrosion. Wrapping the header would be fine, should not be seeing water spray. It surely lowers underhood temperatures. Also make sure you use the spray coating for the wrap, it greatly increases it's life and also it's efficiency.

Have you wrapped one and had any problems?

 

[Elvenhome21]

With being stainless wrapping it wont hurt it, but you could also look into just a heat shild like the stock piece. That works great. Powder coating dosen't help nearly as much what wrap can do for underhood temps. But on the other hand ceramic coating the inside and outside of the header will make the header last for ever becasue then the elements can't get to the base metal (if it would be a normal steel header)

http://www.classiccoatings.com/ceramic.html

This coating goes on the inside of the tubes and helps the most because it reflects the heat from getting soaked "into" the metal in the first place. I am good friends with the guy who runs classic coatings and he races dirt late model and he has all of the coatings they offer on his car/engine and it is impressive the difference it makes for heat wise.

TLHB (Race Coat) is an internal exhaust coating applied to the inside diameter of exhaust pipes for extra protection. This coating aids in the acceleration of exhaust gas velocity which helps reduce internal engine temperatures. TLHB also protects against thermal fatigue and corrosion on the inside of the pipes

 

[romeen]

I wrapped my exhaust manifold. My underhood temps seem significantly cooler, I'm glad I did it. Unlikely that water would get up there. If it did the heat would rapidly evaporate it.

 

[91 Turbo Mitsu]

Thanks to all. I am going to wrap it because I to am worried about the temps. Again thanks to everyone who responded. Travis

 

[snox135]

I've worked with stainless steel for many years. One thing I can tell you is S.S. needs to breath, or else you will start to get corrosion.

 

[romeen]

I've worked with stainless steel for many years. One thing I can tell you is S.S. needs to breath, or else you will start to get corrosion.

I'm not trying to argue but isn't the primary benefit of ss the corrosion resistance. This is the main reason it is used as surgical "hardware" in the human body, although it is of a higher grade than industrial/commercial ss.

 

[snox135]

You are right, that is the reason people use it. But when it is painted, coated, warped, just not allowed to breath it will get corrosion. The rate of corrosion is no where near that of carbon steel, but it will get corrosion. Carbon steel you don't want it to breath or it start to oxidize.

 

[airFS]

I recently just bought a new turbo and I was thinking about getting a tubular manifold instead of using my stock one. I was wondering if the tubular manifold would make the engine bay any hotter and if it does would wraping it help. Also could they get hot enough to some how crack or rewin the paint on your hood because of the heat

 

[9394clipse]

though the aftermarket manifold may not absorb and/or disperse heat as well as the O.E.M. one from the factory I don't think that it would hurt your paint

 

[9394clipse]

actually if you are that concerned with it have the new manifold ceramic coated or some thing

 

[romeen]

Ceramic coatings look nice but wrapping is cheaper and you dont have to send the manifold out. I wrapped my manifold and it seems to work very well. Underhood temps are definitely lower.

 

[PieEyedPiper]

Just curious, why do you want a new manifold? let alone a tubular?
What turbo did you get?

 

[airFS]

I got a t-28 and I know I dont necessarily need a tubular manifold, but by now the factory manifold is pretty beat anyway. Plus wouldn't it be easier to take off the stock turbo and manifold instedad of trying to pry the old turbo off it?? Please give me some suggestions...I also wont be installing it any time soon because of the temperature around here.

 

[GST98BIG16G]

wrap it , i did mine , with tubular it was crazy hot , too hot. Make sure do a good job on it and purchase SS zip ties Wrap it for sure

 

[romeen]

Personally I would stick with the 2G manifold unless it's got cracks all the way through to the outside of it. It will flow fine for the T28.
You shouldn't have to "pry" the turbo from the manifold. But removing the turbo/manifold as a unit will allow you to remove it from the top. If you drop the turbo with mani. bolted to head you will need somebody to "catch" if from underneath, plus you wont be able to get a good look at the condition of the inside of the manifold.

 

[stuckwithgsx]

my ### wrapped his gst and one night his car wasn't running that well and it died on him and his mani/turbo were red hot! idk how or why and he doesn't care so......never found why but he only wrapped his mani and not his downpipe or anything.

 

[BISHILVR]

Because wrap holds the heat in, and can cause cracking/breaking on the cheap ones.

 

[Lordpaxin]

I wrapped mine,
Ive seen some WRAPPED up manifolds, so you couldnt even tell what kind it was, I didnt bother with all that, I just tried to get to as much of the runners as i could.

I had a stock hood for a while, no paint issues, and then later on got a deftracing.com cf hood, and again, No problems.

I was mainly worried about radiant Heat on the bottom of the hood, so i jus tried to cover the parts that would be in that vicinity. also, a tube mani is Hard to wrap, Many Hard to reach places,

and those SS zip ties, when you cut them off, the edges are like RAZORS!!!!!

I know its a crappy wrap job. Ordered my wrap from napa,

never should have sold that car, the ford just aint much fun.

 

[fwdeclipse]

I am just finishing up my header wrap and spraying it with the silicone spray. Just wondering those of you that have already done this. Have you guys noticed a big difference in under hood temps. Before the wrap it was insane how hot it got. I am really hoping it cuts it down alot.

 

[GSTeclipse]

I wraped my Down pipe and used the spray and it made a huge diffrence , along with my coated 02 housing and coated FP manifold ....I don't get burned by the down pipe if I touch the wrap , so it's very good stuff

 

[tom04841]

Wrapping the headed isn't a good idea for a daily driver. It traps moisture under the wrap and leads to premature cracking.

 

[GSTeclipse]

Wrapping the headed isn't a good idea for a daily driver. It traps moisture under the wrap and leads to premature cracking.

I take it you must have had this problem ....did you use the silicon spray over the wrap to seal it ?

I know guy's that have also done this and sprayed theirs and have ran for many years to date without a problem

 

[fwdeclipse]

Wrapping the headed isn't a good idea for a daily driver. It traps moisture under the wrap and leads to premature cracking.

Yeah I am using the silicone spray to seal, plus my car is not a DD. I am glad to hear that it works good enought that you can touch it and it wont burn you. It was amazing the heat that came off of it compared to a cast manifold.

 

[99gst_racer]

Aside from underhood temps, header wrapping can also help with quicker spool-up.

And good work using the silicon spray. I've used it on everything I've ever wrapped, and I've never had an issue with cracking or with trapped moisture.