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Originally Posted by BHarvey
Should I buy a scan gauge for monitoring temps with using a grill block?
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Or something similar.
Especially in hot weather it's good to keep an eye on the coolant temp.
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Is the general consensus that a grill block is for aero/streamling, or for just keeping air from entering the engine bay?
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It's doing both.
It streamlines the front by keeping more of the air out of the engine bay where it causes drag and cools the engine bay.
The air usually goes out of the engine bay through the wheel arcs or underneath the car, neither of which is good for aero.
More cold air means the engine runs cooler or takes longer to warm up, again, neither is good.