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Exhaust manifold shield

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Old 07-24-03, 01:15 PM
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Exhaust manifold shield

Am I going to melt things if I take this out? Or maybe the engine bay will get too hot?

Anyway, it's rusted off its mounts and it RATTLES at 1700-1800 RPM.

I don't know how easy it is to remove/install as I haven't gotten under the car to look at it. Think I should pick up a new one?
Old 07-24-03, 04:22 PM
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Mine has some of the heat shields removed, and the floor gets hot enough to burn you. Even though I have no interior down there, I still reccomend that you fix/replace it.

-Ben
Old 07-24-03, 04:51 PM
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They are a PIA to get off, at least on a turbo. That is why it took us 3 hrs to get my turbo off the first time. I am currently running without one, but Ben's floor is so hot cuz I think the downpipe heat shealds have been removed, not so much the turbo/manifold. It'll prolly help intake temps a bit too, since the exhaust heat will be radiating right into the intake mani.
Old 07-24-03, 05:22 PM
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The exhaust one at the engine is needed to keep things cooler on the intake manifold. Otherwise you will hot soak the intake and loose power.
Old 07-24-03, 06:35 PM
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oops, I thought he said DP shield. In any case, heat shields are usually there for a reason.

-Ben
Old 07-24-03, 06:40 PM
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Mine is removed.. it rusted off..

I'm in the process or making a new one (custom - because of the fact that theres no cheap ones without rust.. might as well make one)

It's basically as Icemark said - heat soak issue. Nothing of mine has melted, But I'm sure I'm losing some power because of it's absence.
Old 07-25-03, 10:06 AM
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mine broke off too when i replaced my turbo and mani. what's a good material to use to make a replacement?
Old 07-25-03, 01:30 PM
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Mine was also rusted off. I had a really hard time getting it out when I pulled the turbo. It ended up coming out in three pieces.

Haven't given much thought to what I will do when I put the turbo back in the car. My downpipe is Jet-Hot coated but I'd still like to keep the exhaust manifold heat shield. Is there any company that sells them, or is fabrication required? Either way, I will definitely put one on when I put the turbo back in the car.
Old 07-25-03, 04:32 PM
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It is not only heat soak on the intake manifold.Look at the engine harness wiring route.
Old 07-25-03, 06:37 PM
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Is the heat shield supposed to be in one piece or two, because when I had it on a lift I removed the lower half of the heat shield.
Old 07-25-03, 07:05 PM
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I currently have no heat shield, but that is also because I have a header. When I put my new engine in, I think I am going to wrap the header, to keep engine bay temps down.
Old 07-25-03, 07:08 PM
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Mine rattled too. To fix it, I drilled a small hole in the top edge of the shield, put in a spring that reaches down to the motor mount, and attached it to a 3" piece of metal rod that bridges across the gap in the motor mount. The spring pulls down on the shield, stopping the rattle. I tried the oversize washers on the mounting bolts too, but this works better, and you can't really see it unless you look pretty hard. I also riveted the top and bottom halves together near the exhaust end.
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