Curtis,
About five years ago I rebuilt a 2QM from the ground up for a friend. It
was raw water cooled. Absolutely no corrosion.
I have a 3QM30 raw water cooled that was in salt water for 30 years and
although I have not had the head or pan off I have had about everything else
apart on it. I haven't found any corrosion in the engine. I did find salt
deposits in the exhaust system probably because the prior owner ran the
engine hot at some point in time. I found both water thermostats had been
removed. I replaced the thermostats and removed the salt deposits and have
had no problems with the engine for over 800 hours.
If I were going to replace a QM engine I certainly would not replace it with
another QM engine.
I did have the transmission come apart from the engine but that is another
story.
Frank Noragon
S/V Cool Change
C&C LF38, S/N 001
Rose City Yacht Club
Portland, Oregon
-----Original Message-----
From: Curtis
Sent: Tuesday, July 16, 2013 7:45 AM
To: CnC-List@cnc-list.com
Subject: Stus-List 1981 C&C 30 MK1 engine re-power help
O.K I know, I know.
I was so proud to get the East Coast Lady for a song... Now It looks
like she needs a new power plant. If the compression test today shows
her to have low compression I will swap the engine out my self.
I have one question?
can I swap the 2GM-13 3400 rpm engine "RAW water cooled"
With a 2GM20F 16HP fresh water cooled engine?
Is it the same size? Are the engine mounts the same? Does it still
draw raw water thru and out the back to cool the exchanger?
Its a running take out with the transmission.
Oh one other question, any way to find out the age on the engine I
will buy? SN# is in the 12,000s
Thanks for your help.
Even with a repower I will still be below 7,000 on the boat. She's a
great little boat.
--
“The pessimist complains about the wind; the optimist expects it to
change; the realist adjusts the sails.”
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