[C320-list] Help with Perkins M-30

[Rick Smith]

Thank you, Kevin -- will look into this -- really appreciate the insight, 
and good to know you found a solution!  We've been chasing this waskally 
wabbit all over creation for about a year...

-----Original Message----- 
From: Marianne and Kevin Waterbury
Sent: Tuesday, July 07, 2020 8:26 AM
To: C320-List at catalina320.com
Subject: Re: [C320-list] Help with Perkins M-30

Hi Rick

Your problem sounds similar to one I encountered last summer, I was also 
losing coolant. It ended up being a small crack in the antifreeze  tank 
where the heat exchanger sits. It only opened up when the engine got hot 
allowing the antifreeze to leak and mix with the raw water and exit through 
the muffler. When I replaced the tank it solved the problem. If you go back 
to June 26 2019 you can read the thread Coolant mixing with raw water

Hope this helps
Kevin Waterbury
1994 #111 Harvest Moon

> On Jul 6, 2020, at 2:00 PM, Christian <ccaper at gmail.com> wrote:
>
> Hi Rick,
> I'm a Perkins M-30 owner, but haven't encountered this problem before, but
> am familiar with the cooling system.
>
> Quick question for you though.  You said you replaced your head gasket.
> Prior to replacing the head gasket, did you observe coolant in your oil?
> Oil would have been a milky cream color if they mixed.
>
> If you aren't getting any coolant in your oil, but still losing coolant, I
> would highly suspect it's mixing with your raw water through a leak.  I
> would ensure your radiator end caps (front and back) aren't leaking.  If
> not them, you might need to check if any of the tubes in your radiator are
> cracked and leaking.  This could be checked through a pressure check on
> your radiator, and it's easy to pull.
>
> Christian Caperton
> 1994 #138 C320 "Canuck"
> Monroe Harbor, Chicago, IL
>
> On Mon, Jul 6, 2020 at 12:29 PM Rick Smith <ricksmith4333 at gmail.com> 
> wrote:
>
>> Good afternoon C-320 list!  I’ve been off the list for several years and
>> now time to rejoin...am hoping to get some help on trouble shooting a
>> nagging problem with the Perkins M-30 on my Layla, hull #136.  I’m 
>> original
>> owner, bought in 1994, been in fresh water on Lake Lanier near Atlanta 
>> for
>> the last 26 years.
>>
>> Mystery: losing significant fluid from the cooling system and don’t know
>> where it’s going.  First thought was into the oil and that proved 
>> correct –
>> so replaced head gasket etc. and now oil is clean and not cloudy.  But
>> still losing about 45-50 oz of fluid in a 45 minute motor time from my 
>> club
>> to the race course.  No fluid visible in the bilge and no movement in/out
>> of the external reservoir.  Engine temp runs steady at 180.
>>
>> Any guidance from anyone who has experienced this problem or has ideas
>> would be greatly appreciated!
>>
>> Thank you!
>>
>> Rick Smith
>> Layla #136
>>