Quote:
Originally Posted by Christ
I'm going to make a prediction about that right now.
It's not going to affect running/driving temperature.
I say this because, even with a grille block installed, and while driving, the air flowing under the car causes a pressure loss under the hood, and most of the heat lost from the engine while driving happens by way of this flow.
This, of course, is a theory, and may be proven wrong, but it's my guess as to what's going to happen in that aspect.
I also theorize that heat loss will take longer, although not significantly (i.e. less than 3% gain in timespan).
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I think your probably pretty close from what I've been seeing so far. I think it may affect temps sitting at stop lights with the engine running. But otherwise it gets enough airflow under the vehicle that it doesn't affect it when it's moving.
I've been looking at my options for insulating the hood and found this stuff at lowes.com
Reflectix 16" x 25' Foil Insulation They have it in some places in up to a 4' wide roll. Sadly where I am the biggest I can get is 16" wide. The 16" wide roll is about $20.