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Old 11-07-2017, 09:00 AM   #1
Tom.B's Avatar
City: Cary, NC
Country: USA
Vessel Name: Skinny Dippin'
Vessel Model: Navigator 4200 Classic
Join Date: Jul 2009
Posts: 5,713
Getting air to motors

So I was thinking the other week about how my motors get air. It all started when I was considering a cold air kit for my truck. Why do our boats just pull warm/hot air from the engine rooms with the only connection to the outside being slotted vents on the side of the hull? Wouldn’t motors run much better if we plumbed a path to grab cold air more directly from the outside? Maybe not a sealed system, but maybe just a draft of cooler outside air directed toward the motor’s intake.

It seems to me that a measurable gain in performance (HP or efficiency) could be had by doing something like that. Or am I missing something?

Discuss... and thanks!
2000 Navigator 4200 Classic
(NOT a trawler)
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