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shield under lower intake

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Old Dec 20, 2003 | 08:04 AM
  #1  
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shield under lower intake

What's the metal shield that's bolted underneath the bottom of the lower intake manifold supposed to do?
I took mine off and found a lot of crap in there.
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Old Dec 20, 2003 | 09:30 AM
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From: Chasing Electrons
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Re: shield under lower intake

Originally posted by Viprklr
What's the metal shield that's bolted underneath the bottom of the lower intake manifold supposed to do?
I took mine off and found a lot of crap in there.
It is supposed to keep the oil splash from carbonizing on the bottom of the hot (from EGR) manifold.

RBob.
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Old Dec 20, 2003 | 10:35 AM
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I see said the blind man. Isn't there more to that?

I guess it's probably a good idea to clean it out when the manifold's off. When I pulled my engine apart I found a lot of crap in the cylinders. 5000 miles. That and vibrations were leading the engine to a very premature death.
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Old Dec 20, 2003 | 05:38 PM
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It also shields the hot oil from heating the air in the intake manifold; cooler air = denser mixture = more power.

Jake
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