[alberg30] Westerbeke

[Christopher Sousa]

Peter,

I have the 2GM20 13 h.p. Yanmar installed in Carina Vela which fits very
well in the space provided. I generally run 2800 r.p.m. cruising at 6.5
knots. I have a 3 blade modified sail pitch (not a machine pitch) 13 X
13 installed on the boat currently. We upgraded from a 2 blade to a 3
blade, the 2 blade was horrible, the boat would not move against the
current of the Ipswich River in MA. Any other question pls feel free to
ask.

Regards,
Stephen

Peter Amos wrote:

> Tom, the information I have from Westerbeke recommends cruising revs
> at 80% of maximum. For the M320 B this is about 2900rpm.If you look at
> the web site performance graph for this engine, 2900rpm gives
> only10-11hp at the prop. This may be enough for lighter boats but our
> A30's are reassuringly substantial and my personal opinion is that a
> few more hp would be useful. My prop is a 3 blade 12x8 I think from
> the original Atomic 4. I also find that below 900rpm it runs very
> lumpy which makes idle speed uncomfortable.This may be common to all
> diesels. I read somewhere that at low revs the fuel metering is not
> accurate enough to give equal injections to all cylinders.I would be
> interested to know if 4 cylinder marine diesels suffer from the same
> uneven running problem at low rpm. I have no complaints about the fit
> in the engine compartment.It seems that the mounting feet are about
> the same as the Atomic 4. Tait Tait has the liner of the later models
> and it does not cause a problem.  Have a close look at the starboard
> view on the web site to see the location of the dipstick. First time I
> did an oil check it took an hour to get it back in! I suppose that
> sort of problem arises with engines not specifically designed for boat
> installations.If you could get performance figures and dimensions of
> the comparable Yanmar that would be a useful comparison. Peter
> AmosTait Tait #478 P.A.Amos at tesco.net.u.k
> -----------------------------------------------------------------------
>                   [Don't Just Travel. Travel Right.]
> -----------------------------------------------------------------------
>


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