On Thursday, September 17, 2015 at 9:17:27 AM UTC-4, Jim Wilkins wrote:
"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 4.170...
John B. fired this volley in
:

I had assumed because the design team thought there was no
dirt on a boat :-)
--


Well, John, actually, there's not a LOT of free-flying particulates
in
the bilges of your typical all-metal boat. There's just nothing
down
there that can generate such airborne waste.

In addition, except for the odd insect, there's not much in the way
of
particulates floating around over open water in non-industrialized
countries, like 'Nam was.

I cannot remember ever seeing an engine damaged by airborne matter,
except for airborne shrapnel and bullets.

Lloyd

Snow blower engines don't usually have air filters either.
https://answers.yahoo.com/question/i...1051205AAfJehh

-jsw

Our OMB & gig 6-71's air intake boxes were simple 'silencers', with just enough baffling to (try to) minimize air flow noise. They also served to keep idiots' inquisitive fingers out, I suppose.

Jim H.