Heat under the Hood?

bigbadxj · 04-10-2009, 06:32 PM

I know there has been a lot of arguing about cone filters and homemade inductions about how they just suck up hot air. But I was figuring since the intake and exhaust manifolds are right on top of each other the air is going to be super hot before combustion anyways right!?! Also everyone wants to know about headers, but isn't the stock exhaust manifolds almost like the aftermarket headers maybe just not as long but over all it has more of a header design than a lot of exhaust manafolds that or really badly designed. So My point is wouldn't taking off your stock manifold and sand blasting it and having it cerimic coated or rattle can coated and then wrapped be the best way to reduce heat in that area in turn making for more power and better running Jeep? Huh HUh what do you guys think?

94Dodge Truggy · 04-10-2009, 07:49 PM

Try it and see what happens and let me know. May work but might not be all that noticeable. Time spent and money for heat wrap may not justify the project. Mud gets into the wrap also and makes a mess. Give it a tune-up and keep a hot thermostat in it for good mileage. Some headers are tuned and others have a coating to keep the heat in along with other performance differences. Good luck!

bigbadxj · 04-10-2009, 08:29 PM

I found this link to a guy that did something to the effect of what I am talking about he spent a total of $70 bucks http://articles.jeepforum.com/Reduce...-_Exhaust_Wrap

WrenchMonkey · 04-10-2009, 08:52 PM

Maybe if you had the header off anyway.

That's a pretty big job, for the hope of slightly cooler air intake.

You probably be better off spacing the hood up like I did, or cutting a couple vents in it. That'd let a lot of heat out, and keep everything cooler.

Your call... good luck!

Robert

sarge · 04-10-2009, 10:38 PM

Most guys in XJ's run hood vents , Lebaron vents are very popular also Grand Prix GTP's ( but the GTP's are hard to find and $$) . I would not suggest that you wrap your headers or manifold. There has been talk that wrapping them on an off road vehicle that sees mud and water will lead to rust problems. Find a set of Lebaron vents in the scrap yard and break out the die grinder .

bigbadxj · 04-10-2009, 11:29 PM

Yea that is what it looks like I'll be doin thanks for the info guys

Nuts · 04-11-2009, 02:52 AM

Quote:

Originally Posted by sarge

Most guys in XJ's run hood vents , Lebaron vents are very popular also Grand Prix GTP's ( but the GTP's are hard to find and $$) . I would not suggest that you wrap your headers or manifold. There has been talk that wrapping them on an off road vehicle that sees mud and water will lead to rust problems. Find a set of Lebaron vents in the scrap yard and break out the die grinder .

The mud will act as a ceramic coating and insulate the header even more... atleast for the few months before they rust out from the moisture

WrenchMonkey · 04-11-2009, 12:02 PM

Quote:

Originally Posted by Nuts

The mud will act as a ceramic coating and insulate the header even more... atleast for the few months before they rust out from the moisture

Meh, I've never seen a 4.0 header live long enough to rust.

They always crack first, when the wussy motor mounts wallow out...

Robert

fabricator · 04-11-2009, 03:12 PM

You guys can do what you want but,
for the record, my air intake is 2 inches or less away
from my header
can get pic's if you want them
been that way for years now

04-10-2009, 06:32 PM	#1
bigbadxj BIG DADDY Join Date: Mar 2009 Posts: 28	Heat under the Hood? I know there has been a lot of arguing about cone filters and homemade inductions about how they just suck up hot air. But I was figuring since the intake and exhaust manifolds are right on top of each other the air is going to be super hot before combustion anyways right!?! Also everyone wants to know about headers, but isn't the stock exhaust manifolds almost like the aftermarket headers maybe just not as long but over all it has more of a header design than a lot of exhaust manafolds that or really badly designed. So My point is wouldn't taking off your stock manifold and sand blasting it and having it cerimic coated or rattle can coated and then wrapped be the best way to reduce heat in that area in turn making for more power and better running Jeep? Huh HUh what do you guys think?

04-10-2009, 07:49 PM	#2
94Dodge Truggy EX-Vice President Join Date: Jan 2007 Location: Fairfield, Ohio Posts: 3,048	Try it and see what happens and let me know. May work but might not be all that noticeable. Time spent and money for heat wrap may not justify the project. Mud gets into the wrap also and makes a mess. Give it a tune-up and keep a hot thermostat in it for good mileage. Some headers are tuned and others have a coating to keep the heat in along with other performance differences. Good luck! __________________

04-10-2009, 08:52 PM	#4
WrenchMonkey Mechanical Animal - CORE Member - - Moderator - Join Date: Feb 2008 Location: Beechmont Posts: 1,883	Maybe if you had the header off anyway. That's a pretty big job, for the hope of slightly cooler air intake. You probably be better off spacing the hood up like I did, or cutting a couple vents in it. That'd let a lot of heat out, and keep everything cooler. Your call... good luck! Robert __________________ DIRTY DEEDS, DONE DIRT CHEAP Whatever doesn't kill you makes you stranger

04-11-2009, 03:12 PM	#9
fabricator Join Date: Jan 2007 Location: Cincy, Oh Posts: 947	You guys can do what you want but, for the record, my air intake is 2 inches or less away from my header can get pic's if you want them been that way for years now __________________ For you guys who can't drive, I have owned a frame rack for several years. Prices are based on your skill and ability to wreck it....

04-10-2009, 08:29 PM	#3
bigbadxj BIG DADDY Join Date: Mar 2009 Posts: 28	I found this link to a guy that did something to the effect of what I am talking about he spent a total of $70 bucks http://articles.jeepforum.com/Reduce...-_Exhaust_Wrap

04-10-2009, 10:38 PM	#5
sarge Pure Bacon Join Date: Jan 2007 Location: Trenton, Oh Posts: 1,098	Most guys in XJ's run hood vents , Lebaron vents are very popular also Grand Prix GTP's ( but the GTP's are hard to find and $$) . I would not suggest that you wrap your headers or manifold. There has been talk that wrapping them on an off road vehicle that sees mud and water will lead to rust problems. Find a set of Lebaron vents in the scrap yard and break out the die grinder .

04-10-2009, 11:29 PM	#6
bigbadxj BIG DADDY Join Date: Mar 2009 Posts: 28	Yea that is what it looks like I'll be doin thanks for the info guys