Yeah I've heard both arguments many times but never a definite answer. What about maybe putting one of those heat blankets over it and then a shiny heat shield on top of that?
Yeah I've heard both arguments many times but never a definite answer. What about maybe putting one of those heat blankets over it and then a shiny heat shield on top of that?
RoadsterLife<3
it looks dope just do it
A piece of metal for a radiation shield, like the OEM header, might be extremely effective. If the air in there is relatively slow-moving, most of the heat transfer to the intake would come from radiation off the hot metal.
Edit for clarity: By "in there" I mean "under the hood" not inside the header. The air inside the header is obviously hustling.
Last edited by moerdogg; 03-23-2012 at 09:13 AM.
I have had a TDR blanket on my JR header for a few years. Fairly simple installation. My header is coated. The blanket works very well for reducing the engine bay temps.
If you're so inclined, wrapping it is probably a cheaper option and it does have a nostalgic look to it.
definite answer.
it doesnt matter. it wont make your car faster . it will help break down the header over time , but you will never see the end result , cause you wont have it that long.
any coating , or finish, under the wrap will be burned off after a while . high temp paint wont last.
but it looks badass.
This is my RB after it was wrapped for a little while. Some parts of the primaries that were under the wrap are actually still shiny, whereas the collector and downpipe that weren't wrapped are completely surface rusted.
If I were to do it again I'd probably go blanket, but wrapping is cheaper and easier. If your EGT's aren't race car level I don't think you'll have to worry about it getting so hot as to cause fatigue. Then again it's OBX so I don't know about the quality of the material and welds.
This thread is relevant to my interest.
My JR header is giving me hot foot in my gutted miata like crazy!
im gonna thermotec the outside of the tub along where the header runs, i was debating on whether or not to wrap the header as well, and maybe go with a blanket for the primaries.
Follow me as I build a Canyon/Track car on a college budget. ----->CLICK ME
Ive been thinking of wrapping my header and intake so this is interesting to me as well
Heat tape your trans tunnel.
Thanks for the picture. What is a little while? A couple years? AND, did you have the bottom tray mounted on your car? The reason I ask, is I wonder if the tray helps keep some day to day moisture out.Originally Posted by druz
Here's what I'm thinking now:
1.) paint header with hi temp paint
2.) wrap header
3.) spray wrap with hi-temp silicone spray
What would be the purpose of the hi-temp silicon spray? A water repellent?
A sealant to prevent slippage and prevent moisture to getting inside the wrap and accelerate corrosion
I bought it used and wrapped, it had it maybe a year of east coast use. Don't know about the tray.
I have a TDR blanket on my OBX header in my '99, no problems for the two years it has been on there and it reduces the heat drastically in that area of the engine bay. It's supposed to bolt in place using the factory metal shield bolt holes, which the OBX doesn't have, but I formed the blanket around the header (it has metal edges that conform to however you bend them) and it's never moved.
I've got a lot less horsepower - luckily they are Japanese horses - usually in better shape and more motivated.
i have my oem manifold (94) iv cleaned out the welds and not welded it from the outside, then i painted it with vht, then i dunk the header wrap in water so when i wrap it its tighter, then started it up and watched the steam show. anyways. my header has been reliable no crack or rust or what have you for almost 2 years. i did re wrap it once cause it was starting to rip everywhere.
i think a lot of the "oh your header will break sooner" posts are from people who drive salted roads.
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