[C320-list] Another White Smoke from Perkins M30 Question

[Jeff Smith]

Mark,

It sounds more like a blown head gasket than a cracked block. That would be
where I would start looking.

Jeff
#121

On Mon, Jan 22, 2024 at 3:03 PM Mark Cole via C320-list <
c320-list at lists.catalina320.com> wrote:

> My Perkins M30 (hull #8, 1993) has started to smoke constantly when
> running.  White smoke with maybe a little blue, it stays close to the water
> and doesn’t dissipate.  I replaced the mixing elbow a few years ago and
> still have great cooling water flow but the engine does overheat slightly
> when I run over 2000 RPM and towing an inflatable dingy.  I have tired a
> few repairs but no change.
>
> The most recent development is decreasing coolant and an increase of oil
> level on the dip stick.  There is also now a sheen on the water around the
> exhaust.  Not bright fuel sheen, but dull brown oil sheen.  Does this sound
> like a cracked block?  Is this the end of this engine, or are there more
> tests/repairs I should contemplate?
>
> Has anyone repowered their C320?  What engine fits best?  Rough costs?
>
> Thanks for any input,
>
> Mark
> Fiddler’s Green #8
> Port Townsend, WA