Is it really a good addition to stop under hood heat? Will it also quiet the motor down at idle being a bit wrapped up? Curious to know since the 84-91 vettes has tubular manifolds which whill produce more noise somewhat than cast iron. Can the header wrap keep the temps down under the hood and keep noise down at the same time?

Is there any "must do's" when doing this or is it pretty straight forward,easy to do?

Thanks

 

The wrap that I have seen is pretty expensive. I would just have them Swain tech. coated. Jet Hot type coatings might be cheaper, there are usually local shops that coat to. You could save on shipping, offset some by tax.

 

Expensive for what it is. Plus it will gather moisture and I dont think it does what it claims to do. If you have actual headers, like mentioned, you can send them to jet hot. That DOES help the temperatures. And it last unlike the wrap which will wear out.

 

Simply no.
It voids any warranty the headers have. Have them coated!!

 

From personal experience, I would suggest against the header wrap. Contrary to what N.C. Kid has mentioned, the header wrap actually does it's job very, very well. Unfortuantely, it does so a little TOO well.

I had installed a tubular steel header on my brother's old Honda Civic CRX Si a few years back. Because the header was just mild steel (like the stock exhaust on the L98) I decided to use header wrap instead of getting the header coated. At first, the results were very impressive. The header wrap did an excellent job of containing the heat and underhood temperatures dropped dramatically! In fact, you could run the car all day long and actually TOUCH the header immediately after shutting the engine down - it did THAT good a job!!!

As time went on, however, this proved to be it's downfall. The header tape contained the heat so well that it actually caused the header to crack! And because the header was wrapped, my brother didn't realize it until weeks (or maybe even months) after it happened. I ended up reinstalling the CRX's stock manifold after that.

So the moral of the story, if the headers you are wrapping are just mild steel (like the stockers), chances are good that they will end up cracking, so don't bother - you're better off getting them coated. If the headers you are wrapping are already coated and you're looking to augment the coating, then go ahead and wrap 'em.

Oh, and I should also mention, header wrap isn't exactly the prettiest thing you've ever seen (in fact, it's pretty down-right ugly IMHO), and it will have no effect on muffling any exhaust noise coming from the engine.

Hope that helps.

 

I'm considering wrapping my headers but not to the extent that they'll warp and break. How thick was the wrapping job on that CRX to have that effect? I wonder if it had been wrapped a little more conservatively if the headers could have survived. Are there varying degrees of wrapping up a header or can you pretty much only do it one way?

 

I've had wrap on for 3 years now, no issues, no rust, but I dont drive the car in the winter

and yes mine are coated

 

Fire hazard. It can soak up dripping oil, which would normally burn off quickly on the header. There are reported cases of these type of fires.

I bought the wrap and decided not to use it after playing with it. The problem is that you need to minimize the overlap per the installation instructions. With the header curves, minimizing overlap on the wraps is not possible.

To help cool down the engine compartment, I punched out some 3" holes in the side of the upper fenderwell cover. This provides a higher point for hot air to escape. The fender vents are too low. No problems with water.

 

[QUOTE=Carl90;1560495763]Fire hazard. It can soak up dripping oil, which would normally burn off quickly on the header. There are reported cases of these type of fires.

QUOTE]


Severe fire hazard, acts just like the wick of an oil lamp. Definitely a bad idea, especially in a fiberglass car!

 

[QUOTE=Mr6spd;1560496517] cure for that is fix oil leaks.

 

[QUOTE=MR NICE;1560496925] I think he means if it just happened and it was not caught. I still standby that it captures moisture and will mold and does NOT do its job but thats my opinion. LOL, you should change your name. You seem nice to me but no one else?

 

 

I tried it, but would probably not do it again.
Rust bubbled up under the wrap(at the collector).

Ya gots ta keep it clean as you can. No oils dripped on it, no greasy/dirty hands touching all over it.

Mine caught on fire

Here is the hilarious thread(the pics are gone now tho-sorry)

http://forums.corvetteforum.com/showthread.php?t=573073

 

 

I was worried about the heat when I installed my headers, so I used some adhesive heat blanket around the brake booster, floor boards and wires, then wrapped the exhaust from the collectors back to the resonater (not the cats). I also wrapped the pipes near the diff to avoid further heat transfer. Mine is all stainless steel, so the rust isn't an issue. Seems to be holding up nicely. The heat from the uncoated primary tubes is significantly less than the stock manifolds.

 

[QUOTE=N.C. Kid;1560497486] Ok I removed the eye roll

 

[QUOTE=MR NICE;1560509149] Your like the one of my top fav members now. LOL. Dry sense of humor with sarcasim and for once your jumping down someone elses throat for my entertainment. lol

 

Those look awesome

 

NOOOOOOOOOOOOOOOO! I remember that thread! Paul....im gonna donate a spare 350 to you to get things running again! I miss hearing your car on the road.