Fred
it was done and checked everyting and I still do not feel comfortable. I 
replaced Sunrod HE , new goose neck elbow,  install external gravity tank so 
water level is always fine and still do not feel comfortable. What is the 
recommended engine and propeller size ?
Thanks
Frank

Sent from my iPhone

> On Apr 10, 2014, at 3:01 PM, Frederick G Street <f...@postaudio.net> wrote:
> 
> Frank — just so I understand: your 3QM is overheating?  Does the engine run 
> well otherwise?  Before you go to all the trouble and expense of re-powering, 
> find a really good diesel guy to look at your engine.
> 
> I had a great guy do some work on my 3QM a few years back, and he told me the 
> engines were originally built for hard, continuous use (industrial 
> compressors and the like), and if properly maintained, they should last a 
> very long time in a sailboat.
> 
> I did find an issue with mine overheating a couple of seasons back.  Because 
> the fresh water heat exchanger is mounted to the engine at an angle, you can 
> check the fluid level when the engine is off, and it will appear that the 
> coolant level is fine.  But with the engine running (and cool, so you don’t 
> get burned), pull the fill cap and you’ll see that the system needs more 
> coolant; it settles to the bottom end of the heat exchanger where the cap is 
> when the pump isn’t running.  You can also see if there’s much coolant 
> running with the cap off.
> 
> Other possible things to do: check the coolant pump impeller; rod out the 
> passages in the heat exchanger; make sure you’ve got plenty of raw (sea) 
> water running through; check the exhaust mixing elbow for build-up.
> 
> And I’m sure other listers will add to this.
> 
> Fred Street -- Minneapolis
> S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI   :^(
> 
>> On Apr 10, 2014, at 1:14 PM, Frank Woronkowicz <fworonkow...@gmail.com> 
>> wrote:
>> 
>> My boat has Yanmar 3QM30 with original added fresh water circ. jabsco pump 
>> and Sunrod HEx. overheating on the Chesapeake Bay. I think to replace engine 
>>  and propeller. Please let me know if any LF owner already did this work and 
>> what is approx cost. 
>> The second question is windllas  type and installation. Did anybody install 
>> windlass in anchor compartment?
>> I have her for approx. 20 years and finally these should be done,
>> Thanks
>> Frank Woronkowicz
>> LF 38 s/y Gdynia
>> ANNAPOLIS MD
>> fworonkow...@gmail.com
> 
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