[C320-list] Motor mounts

[Jeff Smith]

The shop manual sets the minimum idle rpm at 1,000 for the Perkins M30.

Jeff
#121

On Sun, Nov 5, 2023 at 8:36 AM Steve Weinstein via C320-list <
c320-list at lists.catalina320.com> wrote:

>  Folks, I had this problem with my former boat, a C270 with a Perkins
> Perama engine.  If the idle dropped below around 950 rpm, it would
> "diesel", shake and shudder like it was going to fall apart.  It was not
> the motor mounts.  It's a problem with the engine.  I did a bunch of
> research and found that it was common in those Perkins engines.  The fix:
> keep the idle at 1000 rpm or above.  I adjusted the idle so it would not
> drop below 1000 rpm, no more "dieseling" problem.  I have heard that the
> same thing will happen with the Yanmar engines if the idle drops too low.
> The idle on Vega is set to never go below 1000, and I never have a problem,
> engine runs nice and smooth, easy to shift in and out of gear.
> Hope that helps.
> Steve Weinstein2000 C320 #722, Vega
>
>     On Sunday, November 5, 2023 at 09:04:59 AM EST, Laura Gwinn via
> C320-list <c320-list at lists.catalina320.com> wrote:
>
>  I have it too.  Could be motor mounts as the survey 2 konths ago said they
> need to be replaced (winter project).
>
> Sent from Gmail Mobile
>
>
> On Sun, Nov 5, 2023 at 08:39 John Beck via C320-list <
> c320-list at lists.catalina320.com> wrote:
>
> > I have a shutter too don’t think it’s motor mounts
> > Jb
> > Sail On 518
> >
> > On Sun, Nov 5, 2023 at 8:08 AM Tong Yi via C320-list <
> > c320-list at lists.catalina320.com> wrote:
> >
> > > Me too. Motor mounts seem good.
> > >
> > > On Sun, Nov 5, 2023 at 8:05 AM Tim via C320-list <
> > > c320-list at lists.catalina320.com> wrote:
> > >
> > > > Hi All - I have a shudder in my motor when I lower the rpms to shift
> > > > gears. I'm thinking it might be a motor mounts. So first questions,
> > does
> > > > this make sense and any other way to verify? Second, how hard is it
> to
> > > > change motor mounts?
> > > > TIA
> > > > Tim Calypso#630
> > > >
> > >
> >
>
>