[Alberg30] Yanmar 2GM30 Installation

[sousa, stephen (ENG)]

Calvin,

I have a 2GM20F installed in #114 and I have seen the 3GM20F installed in
the earlier Alberg. I have steel Z Brackets mounted on the engine bed which
hold the motor mounts at the correct angle for installation. The
installation was done by the previous owner, so I am not sure if the Z
Brackets were installed by Whitby for the A-4. Bottom line everything fits
in under the cockpit and the shaft lines up perfectly.

Stephen.

-----Original Message-----
From: Voyager Toronto [mailto:voyagertoronto at hotmail.com]
Sent: Tuesday, March 18, 2003 1:28 PM
To: public-list at alberg30.org
Subject: [Alberg30] Yanmar 2GM30 Installation


I'm installing a new Yanmar 2GM30F. I knew from messages on this list that 
others have installed this engine, so did not anticipate any problems with 
fit, especially as my (old) hull#30 has no liner -- just went ahead and 
bought the engine. Imagine my surprise, then, trying to fit the template I 
made of the engine in order to determine the position of the engine bed. My 
template is telling me the hull profile in this area is too shallow: with 
the aftermost flexible engine mounts sitting on the bare hull in the 
fore-and-aft and athwartships position they would need to be, and my 
template on top of them, the engine coupling is vertically higher than the 
shaft coupling. I've checked and rechecked the measurements on my template 
against the engine diagram/specs, hoping I've made a mistake. but no luck. 
An engineering friend of mine who looked at it thinks (assuming my template 
is accurate) the only workable solution is to install the aftermost engine 
mounts outside of (inside of under) the engine and suspend the after-end of 
the engine from brackets attached to these mounts. Can those who've 
installed this engine say if you've had a similar experience? Are all four 
of your mounts sitting UNDER the engine where they should be?  I hope 
someone can point out to me where I  have made a huge mistake, because I 
didn't anticipate a problem of this proportion. From visual inspection, it 
would not appear the problem can be solved by using a longer shaft, brought 
forward. The new engine is replacing a Volvo MD7A.

Calvin, Voyager#30



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