[C320-list] Perkins running hot

[Warren Updike]

This past Winter while on the hard I removed those 4 screws to lube the ball
valve. Once removed the whole unit came out except for the thru-hull.
Definitely not a job to do in the water. Perhaps an external screen will
help. Check product from Groco RSC-Series.

Warren and Pattie Updike
1994 C320 "Warr de Mar" #62

-----Original Message-----
From: JeffWillis111 at aol.com [mailto:JeffWillis111 at aol.com] 
Sent: Tuesday, August 12, 2014 8:53 PM
To: C320-List at Catalina320.com
Subject: [C320-list] Perkins running hot

Hello All,
 
Yesterday the trusty Perkins began to run a little hot motoring out so I  
returned to the dock.  Actually about 30 degrees hotter than  normal.  I 
started at the raw water strainer to make sure in was clear  and noticed the

flow into strainer was very slow.  So I removed hose from  Marelon seacock
and 
checked flow coming from here.  Barely enough to  half fill hose, I was 
expecting a much greater flow than this because 2 months  ago I repacked my 
stuffing box at the dock and the rate of flow coming here was  much greater.

 
The Marelon  seacock on hull 174 has a right angle fitting on top  above 
shut off handle held in place by 4 screws. Newer seacocks online dont
appear 
to have these 4 screws.  
 
My question is can I remove theses screws to remove the right angle fitting 
 to gain better access to ball valve?   I could not really get anything  to 
push thru the right angle fitting to try and clear a possible  obstruction. 
  Visiblity was about 2 ft underwater here in Punta  Gorda, FLA, Charlotte 
Harbor so diving was not successful.  I hooked up a  hose to the exhaust 
side of my small shop vac and blew air backwards thru the  seacock and
thought 
I may have cleared some algae (diver coming Thursday to  clean bottom).  
 
Hooked everything back up and tried again and still runnning  hot.   There 
are a lot of bubbles in strainer bowl when engine is  running.  I never 
noticed this before.  Is this normal?
 
thanks,
 
Jeff Willis
ESPRIT #174