Why do people seeking performance on any Honda, or car for that fact take off the heat shield for the header? Espcially only to show off a rusted stock header?


Modified by blkf22cord at 4:07 PM 9/6/2005


Modified by blkf22cord at 4:17 PM 9/6/2005

 

you have no idea what the **** your tlaking about, do you

 

Call me crazy, but I think it revolves around the "F...k, when did that thing rust off?" incident taking place

That and the prospects of all that swearing and cursing (%$#^@*) and skinned knuckles that go along with removing said manifold, drilling and retapping bolts etc, lead a lot of guys to wait; so they can install headers and turbo's and all that other neat stuff. !!!

P

 

i took mine off... it was heavy.. and it made more room in my engine bay... painting the nice stock ex headers dont look to bad either...

 

Is there really any downside to taking it off?

 

Ive been thinking about taking mine off too, anyways as above asks.. is there a down or upside in taking it off? (i added the upside part )

 

Oh yeah, a tip: when taking off the heat shield on older cars, penetrating oil is your friend unless you like broken bolts. Now mine is held only by two bolts and I need to get a broken one out.

 

hehe my lower bolt is stuck... i put it back on just i case i was guna put he shield back on.. now i cant take it off..

 

The only downside I could see is taking it off may lead to your intake becoming more heat soaked by increased bay temps....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blkf22cord &raquo;</TD></TR><TR><TD CLASS="quote">The only downside I could see is taking it off may lead to your intake becoming more heat soaked by increased bay temps....</TD></TR></TABLE>

um....the header is metal...so is the heat shield...it too will absorb heat, and then radiate it out....the main idea of the header heat shield is so that there is no red hot metal openly exposed in the engine bay

 

go get a header

 

I don't know anyone who's done that. Unless you get a header then there's really no point in taking it off. I mean...it's a heat shield. It's there for a reason.

 

It performs several functions, if the truth be told.

1) Isolates a radiating heat sourse from the radiator (that thing that is desperately trying to cool the engine, not heat it)
2) Retains more heat in the exhaust manifold. Acts much like the same theorys behind using header / exhaust wrap. It's not just keeping other things cool, its' also to keep things hot.

P

 

.....people do it, so.... when they pop the hood, an ignorant thinks those are "performance headers"....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gianinline &raquo;</TD></TR><TR><TD CLASS="quote">.....people do it, so.... when they pop the hood, an ignorant thinks those are "performance headers"....</TD></TR></TABLE>

 

im just planning on wrapping mine... theres not point in me replacing them

 

um....the header is metal...so is the heat shield...it too will absorb heat, and then radiate it out....the main idea of the header heat shield is so that there is no red hot metal openly exposed in the engine bay

lol. . .


Now.... For exhaust wrap, and same can be said for keeping the heat shield in place around a header.

First, the wrap promotes denser, more potent fuel/air charges by insulating the engine bay from exhaust heat. At the same time, it accelerates the pulsed-vacuum effect on headers, resulting in more effective scavenging of cylinders. The increased velocity of exhaust gases produced by higher exit inertia not only clears each cylinder more quickly, it also draws in the next fuel/air charge more efficiently.

Keeping the heat in the headers is especially important for turbos espcaially!!!

Firstly, the exhaust header gases are hotter with a turbo because they can't expand/cool as much, so the headers glow red/yellow... and can cook surrounding components. (The after turbo gases are cooler than normal.)

Secondly, any heat lost out of the headers is energy (pressure) lost and unavailable to drive the turbo.

So you take your shield off your stock accord, you just increased potetial damage or thermo stress on surrounding parts, and you lost keeping the heat in, hence you may decrease the efficency if your exhaust ever so slighty...... KEEP IT ON...


Modified by blkf22cord at 11:28 PM 9/8/2005

 

so if you were to get aftermarket headers, would u put the heat shield back on?

 

The most recent "thing to do" is either
Ceramic coating (thermal barrier) or
Heat Wrap (tape)

P

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P_Adams &raquo;</TD></TR><TR><TD CLASS="quote">The most recent "thing to do" is either
Ceramic coating (thermal barrier) or
Heat Wrap (tape)

P</TD></TR></TABLE>

which is more effective, can u benefit from wrapping ur ceramic coated header, or is it either one or the other, becuz i remember hearing dat if u wrap sum ceramic header it will crack

 

Sad, but true. I believe it's either / or.
People restoring early XKE Jaguars learned the hard way when they, while cleaning up the engine compartment, painted the exhaust manifolds with high-temp paint. The ceramic coating would start cracking almost immediately.
It has to do with the thermal expansion characteristic differences of both the steel header and the ceramic coating.

 

NO!!!!!!!!!!!!!!!!!!!

 

aftermarket headers dont have the bolt holes for the shield...take a look under ur hood and ull c

 

YES !!!!!!!!!!!!!! It's True! It's soooo very True!