[C320-list] Perkins M30 Thermostat Part Number and Source?

[Jeff Willis]

Have you checked out the fresh-water pump?  I had to replace that as well.


Sent from my Verizon Wireless 4G LTE smartphone

-------- Original message --------
From: Christian <ccaper at gmail.com> 
Date: 07/16/2017  6:07 PM  (GMT-05:00) 
To: C320-List at catalina320.com 
Subject: Re: [C320-list] Perkins M30 Thermostat Part Number and Source? 

Thanks.  I'll call TA Diesel first thing tomorrow morning to source the
thermostat and gaskets.

Jeff, thanks about the stainless elbow.  If I replace the elbow, I'll
consider yours.  Though, don't know the pros cons of the stainless versus
cast iron.

Frank, thanks for the details.  Much appreciated.  I'll make sure to torque
carefully.

I inspected the heat exchanger, and it's not corroded, looks clean.

Background, recently acquired this boat.  Have been having over heating
problems ever since.  First found the impeller torn (but all fins intact).
Replaced, still over heating.  Pulled heat exchanger, found 8 p.o. fins in
front.  Exchanger was clean.  Thought for sure that was the problem.  Did a
trial run yesterday in marina, in 40 mins of low RPM's, got above 220.  So,
still overheating.  I'm getting water flow steady out of exhaust, so next
step is thermostat.  If that doesn't solve, then I'll look at elbow, then
pump.

I'm having a blast working on the engine, but I'm drooling over a proper
sail.

Christian Caperton
1994 C320 "Canuck" #138
Monroe Harbor, Chicago, IL

On Sun, Jul 16, 2017 at 3:56 PM, P.F. Ross <pfrstl at gmail.com> wrote:

> Hi, Christian,
>
> I replaced my thermostat on my Perkins M30 in the spring of 2016 as part of
> high temp troubleshooting.  I sourced the part and required gaskets from TA
> Diesels and found them to be quite helpful with quick shipping.
> Unfortunately, all my records are far away for the summer at my boat and I
> don't have the part numbers handy.  I do not remember any additional spring
> that came along with the thermostat so I must have used my original spring.
>
> I do recall there are two sets of gaskets that go on either side of a sheet
> metal plate that fits between the water pump housing and engine block.  On
> my first attempt to reassemble, I overtorqued the bolts that go around the
> water pump housing and I ended up extruding (and breaking) one of the
> gaskets.  Of course, water poured out of this area the first time I started
> the engine after reassembly.
>
> Couple of days later, with new gaskets and a smaller torque wrench I
> reassembled successfully.  Unfortunately, I don't have those torque values
> with me, again they are at the boat.
>
> I also removed the heat exchanger and exhaust elbow to inspect and found
> them both to be in excellent condition (engine only had 350 hrs).  I
> replaced all rubber (heat exchanger elbows, hoses, and exhaust hose) as
> well, all overdue for renewal.
>
> After all this, my engine temp at load came down maybe 5 deg to about 190
> indicated.  I have procured a non-contact thermometer and will go through
> the engine under load this fall.  At this point, I suspect temp sender or
> gauge calibration.
>
> Regards,
>
> Frank Ross
> "Beta Wave" #206
> Naples, FL
>
> On Sun, Jul 16, 2017 at 1:02 PM, Christian <ccaper at gmail.com> wrote:
>
> > Having a difficult time finding a source to purchase a thermostat for a
> > Perkins M30.  Any leads?  Also, unsure if I have the part number
> correct, I
> > think its 145206022.
> >
> > I see is sold in a kit at TA Diesel,
> > http://www.tadiesels.com/perkins-M20-M30-ck.html The kit also lists a
> > thermostat spring in that kit.  Is that something I would need to replace
> > when I replace my thermostat?  Just sent TA Diesel an email inquiring if
> > the thermostat is available outside of the kit.
> >
> > Having an overheating problem.  Getting water flow out of the exhaust.
> New
> > impeller.  Exchanger is free of any impeller debris, and impeller is not
> > corroded.  I suspect I should also consider replacing the mixing elbow as
> > it's original (and in process of ordering that).  But I suspect the
> > thermostat too.
> >
> > Thanks,
> > Christian Caperton
> > 1994 C320 "Canuck" #138
> > Monroe Harbor, Chicago, IL
> >
>