wrote:
Not sure why we're crossposting to re.crafts.metalworking so I trimmed
it. Feel free to post there again if you think we should though.

Sorry, I really didn't look to see it was being cross-posted. My bad.
THANKS!


Tim:
Interesting. I know the old 6-71 "jimmy" was a 426 CID and was rated
at 238 hp in a standard (not marine) configuration. So I'm amazed that
the little 3-53 can obtain 100hp.

I was in charge of a 35' Bruno-Stillman for a number of years so I'm
fairly familiar with a Detroit 4-53. It was a 212 cu in, 4 cylinder,
2 stroke, 140hp, with a blower. It could cruise on semi-plane at about
11-12 knots. As a club Committee Boat, it had to be idiot proof and it
was definitely that. We had no serious problems with it from the time
it was new in '77 until we lost it in Katrina in '05.



I take it that when you say "blower" you are taking about a
turbocharger?

I can see that 4-53 being more believable with a turbochargercranking
140 hp , but I don't see how a "naturally aspirated" 3-53 can achieve
100 hp.

No need to prove anything to me, but I'm just a bit skeptical.
Rick