The difference between the GM and HM are negligible. Most/many parts are interchangeable. The HM only came in 3 cylinders and had a slightly higher power rating. The F designation means that it has a glycol (fresh water) coolant system and heat exchanger. The GM came in 1, 2 and 3 cylinder versions in which parts were directly interchangeable. Visually I believe all of the GMs have a place where a handle can be attached to the front of the engine to presumably hand crank. I have a Yanmar service manual that covers all of the HM and GM variants.
Not sure about the QM. As for access I enjoy 3 sides but could survive comfortably with just front and back. Front alone would be quite challenging. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Yanmar 3HM35F Solomons, MD On Dec 2, 2014 10:40 PM, "Patrick Davin via CnC-List" <[email protected]> wrote: > I took a look at a Landfall 38 last week, and yeah it's pretty bad (engine > access). But does it actually prevent you from doing any critical tasks or > is it more of a nuisance? > > Also anyone know the differences between the Yanmar 3QM30F, 3HM30F, and > 3GM, either in terms of size (access) or power / longevity? > > The boat I looked at had the engine recorded as HM, as either a correction > or upgrade (to a survey which indicated it was QM), but the owner said on > this forum (a few years ago) that it came with a GM. The broker said it has > the original engine. So this is very confusing/misleading, but will try to > clarify with broker which it actually is. > > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > [email protected] > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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