Do to the high amount of heat under our hoods I'm wondering if wrapping the headers would be a good idea? I know it would help with under hood temps, but what are the drawbacks?
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Apparently that is all you have to do to make that claim.
He might have got one fabbed. The downside is that all the heat stays in the headers and causes more heat stress to them and may cause cracking. Wraps will void some warranties that header companies may offer.
Working to expel the hot air from under the engine compartment is the direction I'm moving in, however short of ventilating the hood there don't appear many good options. Anyone have any ideas?
An idea, put a brake duct scoop under the bumper or otherwise in the air dam just under the rad support. Run a duct tube from this out past the cross member. Under the turbo splice in Y piece to the duct work described previously and add a short piece of duct to this that ends up near the turbo/exhaust manifold.
I think it will work under speed in that cool/cold fresh outside air will enter the brake duct opening and then rush past the Y fitting. The air rushing past the Y piece will have a venturi effect and pull hot air from duct opening placed near the turbo. The hot air pulled from using this setup will be replaced with cool/cold fresh out side air thats coming in from the hood scoop.
I suspect that even though hood scoop is under the boundary layer and theres no ram air effect it does allow air to reach the exhaust manifold area. But I wonder if the air in this spot moves much because of air is not rammed in and other things in the engine compartment here are not setup or intended to direct the heated up air out.
You could also just run a duct from up by the turbo down past the cross member and cut the end like / instead of this -. I think this will work as well as air getting under the car at speed will pull the hot air through the duct, again because of the venturi effect.
Another option is to use or include one of those marine vent fans that the road racers use into the duct work so that at low speeds or stop and go traffic theres some airflow. I would think you could wire a fan up to a turbo timer to help with cool down and prevent coaking in the turbo.
With the right setup I think a simple controller could be made so that the fan is controlled by a simple temp sensor located near the turbo. The online magazine Autospeed most likely has a simple device that could do this and be put together on the cheap.
He might have got one fabbed. The downside is that all the heat stays in the headers and causes more heat stress to them and may cause cracking. Wraps will void some warranties that header companies may offer.
Is this an F/I problem? I know N/A folks get their headers coated or wrapped, and even a Lightning owner I know swears by header wrap for his truck (supercharged).
It keeps heat where you want it (inside the headers keeping exhaust velocity high) and away from the engine bay. All I ever heard was something about making the headers look like crap if you ever unwrap. Dunno about that, though.
Do to the high amount of heat under our hoods I'm wondering if wrapping the headers would be a good idea? I know it would help with under hood temps, but what are the drawbacks?
I've ran header wrap on my headers of my V6's and V8's in the past and here are a few of my enjoyments and quirks.
First and foremost, header wrap does a FANTSTIC job of lowering under-the-hood engine temperatures very well. I would only not recommend header wrap if you drive your car in the winter. I had my downpipe on my GTP header wrapped and after one winter, salt had gotten underneath the wrap and literally ate a hole in my downpipe and it needed replaced. Though I washed the undercarriage of my car every week during the winter, the pressure sprayer was not able to penetrate the header wrap and reduce the amount of salt buildup there. If you live in a particularly salty area, with bad winters, you can expect salt to accumulate under the header wrap and this will weaken the structure of the headers and could possibly create leaks and require replacement down the road.
Aside from that, I've loved header wrap on my fall/spring/summer rides. Even on my old 383LT1 I was able to put my hand on the Hooker headers after a run at the track with the header wrap and just feel a warm sensation.
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it keeps underhood temps down. however, if the wrap gets wet, and heats up, cools down, heats up, cools down, etc the moisture becomes acidic and eats away at the metal even faster than water would normally on steel parts, and it will also corrode aluminum, titanium, and stainless parts. if you need something to keep heat down ceramic code it
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it keeps underhood temps down. however, if the wrap gets wet, and heats up, cools down, heats up, cools down, etc the moisture becomes acidic and eats away at the metal even faster than water would normally on steel parts, and it will also corrode aluminum, titanium, and stainless parts. if you need something to keep heat down ceramic code it
YES, ceramic code it! lol, sorry i couldn't help it but it does do all the other stuff like corrode things.you might want to ceramic coat them.
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Pros and Cons of wrapping headers
but it does do all the other stuff like corrode things.you might want to ceramic coat them.
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