[C320-list] Max RPM on Yanmar YM30

[Bruce Stanley]

Hull1084, 250 hours, Yanmar 3YM30.
no smoke.
Usually run it at 2400 to 2800.
Will check on what happens at 3200.

Bruce Stanley C320 #1084
Sydney Australia
===========================
On Thu, Jul 31, 2008 at 2:43 AM, Len <aqua5len at gmail.com> wrote:

> I have Hull #1070---Max revs show 3200 cruising in forward gear, but are
> actually 3600 when tested in idle with digital tach.  Have never tested
> when
> cruising; under load max revs may well be 3200.  I usually go full throttle
> when headed out to sea for about 20 minutes---never any  smoke.
>
> Len Krane
> AQUA5   #1070
>
> On Wed, Jul 30, 2008 at 6:52 AM, Crosby Roper <vmdatsea at hotmail.com>
> wrote:
>
> > Hi All,
> >
> > I have hull # 1054  a Yanmar YM30 On our way down the coast from
> Oceanside
> > to San Diego, I ran the engine at high RPM's for a few minutes. The
> engine
> > has about 200 hrs on it and is well maintained. We have a 3-blade fixed
> > prop, original factory version. All was well until we ran the RPM's up to
> > 3200 and got brown smoke from the exhaust. We typically run the engine at
> > 2500-2700 RPM. Does anyone know the max RPM for this engine? (I know it's
> in
> > the manual orlando, but the manual is on the boat and I'm not :)) Was the
> > brown smoke a sign of engine overload? Any cause for concern? Thanks for
> > your help.Crosby Roper, VMD
> > Hull # 1054 Tethys
> > San Diego, CA
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