illenema

Considering Getting a pair of headers coated Local to save $$ in shipping.
Jet hot a Known king as well as a couple of others.
Anyone have dealings or heard of this place http://www.ramproline.com/

mtwoolford

you mean other than it's in Los Vegas ?

DVNCI

I used these guys on some headers on my 02' M5:

http://swaintech.com/

Nice stuff, but not nearly as "pretty" as Jet Hot, etc.

dizwiz24

swain tech is the better technology out there now. this is who american racing headers recommended to me.

it is not as pretty, but it goes on 'thicker'.

illenema

If I send them out- thicker is better

BlueTwoToneCorvette

1985 c4, I used VHT flame proof ceramic paint from the auto store and prepped/painted my long tube headers myself. 2 cans @ $10 each. You have to bake in your oven progressively, multiple times to cure it. Really stank.

I haven't had any problems yet, and it seems to reflect the heat, so my engine compartment doesn't seem to get as hot as I read long tube headers can get.

Midnight 85

Melrose has some of the most beautiful looking headers you can find, and if you send them your headers, regardless of brand, they will get them coated for you at a very reasonable price.

Lt4-396

If they are cheap/steel I would get them coated but if they are nice stainless ones I wouldn't coat them. IMO stainless headers look really good when they start to blue and change color close to the head I have had a few lt4s and put stainless works on them all except for one that I had kooks build a one-off header when they were still on long island.
The under hood temp was just slightly higher then stock but nothing to worry about.

Gibbles

I agree with the color changes of stainless, i love the look.
However headers really do get super hot, like i found the factory plastic wire shielding on my car would melt and warp if they came with in a few inches of the headers.
And i have coated headers, inside and out (jet-hot coated, headers from Melrose).

Lt4-396

Yea I have heard two schools of thought about heat and headers.
1. Headers are always hotter than manifolds
2. Headers are actually cooler since the gas moves quicker threw them.

I'm unsure which is correct but I'm leaning towards headers are hotter.

The only real way to tell is to measure manifold temp and engine compartment then again with headers.
I'm actually installing a set of stainless works headers this weekend on a lt4 so I'll try to measure the temp difference.

illenema

Well, On my lt-5 when I replaced the manifolds with used coated header it raised the under hood temps, I think its good to keep those sp wires as cool as possible, so a good insulated wire protectors wouldn't be a bad idea id think..
Please get that temp difference! Im a coating either way.

Gibbles

I could have this off, so please correct me if I'm wrong.
headers are cooler as they pull more heat from the engine, however the larger surface area under your hood can heat up other things.
​​​​​​​This includes the fact they take up more space, and tend to get very close to things that a manifold would not.

dizwiz24

heres another school of thought (that i dont agree with).

i read an article where an engine builder was saying that he could make more power by adding 2 degrees more timing with uncoated headers vs coated before he would get pre-detonation

i need someone like will (rklessdrvr) or jim (tpi421vette) to chime in on that.

maybe thats
true if you have a bottleneck like a cat or y pipe nearby, but i cant believe it to be true for a catless true dual x pipe 3" exhaust like most of us have