Quote:
Originally Posted by comptiger5000
Cycling the water pump on and off is a BAD idea. The off cycles would have to be very short, and only at minimal to no throttle. Otherwise, you'd get hot spots around the cylinders, when the rest of the block is cold, and that could make for a warped or cracked block or cylinder heads.
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Instead of turning the water pump completely off, you would want it to turn slowly. Just fast enough to prevent hot spots. That might actually be pretty fast, which could explain why electric water pumps haven't caught on.
Quote:
Originally Posted by bgd73
never cover the radiator.. even my dad in his rig climbing through way below zero in northern maine learned a lesson on this..
never ever cover the radiator.
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A grille block outperforms a radiator block, aerodynamically. But it's harder to execute, so cover 90% of the radiator in the winter if you don't have a grille block. When I do a radiator block, I cut a few small holes in the cardboard (or coroplast) so if the cooling fan does kick on (which it hasn't below 74mph), air can still flow through.