[C38] C38 Losing circulating water
Les
hlhowell at pacbell.net
Mon Jun 16 23:14:47 EDT 2008
If you have a water heater you could be losing coolant through it. Try
turning off the valves to the water heater and see if the problem is
solved... By the way, coolant in your freshwater supply is NOT GOOD for
you.
Regards,
Les H
On Mon, 2008-06-16 at 12:01 -0400, Bob Porter wrote:
> Hi Folks;
>
> I have a persistent circulating water leak in my engine. I lose about
> 500 ml of antifreeze in about 50 miles of motoring. I have changed out
> the heat exchanger, the hoses, the radiator cap. Any thoughts on where
> the leak might be?
>
> Bob Porter
> Hiawatha
> ----- Original Message -----
> From: Max Soto
> To: Catalina 38 Listserve
> Sent: Monday, June 16, 2008 11:28 AM
> Subject: Re: [C38] Water pump
>
>
> This might help
> I got this from very old forums, but there are some part
> numbers.
> Oberdorfer Rotary Seals must seal 07/30/02 10:53AM
> http://forums.torresen.com/eThreads/view/engines/view_post?id=3916
> The first time I changed the impeller on my Oberdorfer I ended
> up pulling the whole shaft out and after replacing the
> impeller on the shaft and inserting the shaft back into the
> pump it started to leak water. (This water will rust the front
> of your engine as well as the oil pan) Very bad news. The next
> time I replaced the rotary seals as well as the impeller and
> this did stop the water leak. The shaft seems to be shaped
> like a Coke bottle that necks down to a considerably smaller
> diameter at both the water seal and the oil seal center point.
> This necking looks like an intentional design feature. Anyway,
> my engine needed a higher capacity pump and it is now using a
> Sherwood water pump no. 302648 - 42175 that has twice the
> water flow capacity. The pump came as a kit #302837 for
> retrofiting Universal models 5411, 5416, 5424, 5432, and 5444
>
>
>
>
> Sherwood has twice the flow of
> Oberdorfer
>
>
> Markus Ritter
> (MarkusRitter at hotmail.com)
>
>
> 08/02/02 09:32AM
>
>
> I replaced my Oberdorfer last
> week with a Sherwood, so far it
> is great. I love getting more
> water through and I no longer
> get steam. see
> http://sankaty.homestead.com/Universal_5432_rawwater_pump_cap.html A KIT IS AVAILABLE TO MOUNT THE CURRENT PUMP ON the universal 5411, 5415, 5424,5432, & 5444 IN PLACE OF THE OBERDORFER. KIT PART #302837. THE KIT CONTAINS THE NEW PUMP AND MOUNTING HARDWARE some folks have also changed to the 3 inch heat exchanger in place of the original 2 inch unit.
> see
> http://sankaty.homestead.com/Overheating_Heat_Exchanger_size_.html
>
>
>
>
>
> Pumps/oberdorfer/sherwood
> re:kubota/universal prices and
> compare
>
>
> Rick (pelago at phoenixcon.net)
>
>
> 08/05/02 11:09AM
>
>
> DEPCO PUMP COMPANY 1 800 445
> 1656 I have read with
> interest the posts re: gpm and
> cost and compare Oberdorfer
> with Sherwood.. the
> Universal/Kubota uses two types
> of pumps 2 bolt and four bolt,
> but in reality they are the
> same pump they are 202 pumps
> and the flow rate is 9.59 gal
> per minute at 2500 rpm... cost
> is $140.00 from Depco, I use
> them for all pump needs,
> rebuild kit is $32.31 and comes
> with all needed for complete
> rebuild. If you want to replace
> the shaft it is $21.57.
> Sherwood no longer makes the
> M-5 or the H-80 that would be
> the Sherwood model to replace
> the 202 style, However a
> Westebeke kit deal from
> Sherwood thru Westerbeke or
> Westerbeke distributor is G903
> for 234.20..HOWEVER THE FLOW
> RATE IS DAMN NEAR THE SAME AS
> THE OBERDORFER... no brainer
> 140.00 versus 234.20.... Just
> ordered a new oberdorfer as a
> backup for existing pump, also
> ordered a rebuild kit for ON
> HAND!!!! happy sailing and
> Pelago is getting ready for
> cruise #8
>
>
> --
> Max Soto
> C38 #198 ESTANCIA
> Puntarenas, Costa Rica
>
>
>
>
>
>
>
>
> 2008/6/16, RICHARD KILROY <dickkilroy at verizon.net>:
> There are two water pumps on the 5424 one is the
> saltwater cooling pump and
> the other the fresh water circulation pump. I have
> replaced both on my cat
> 38 I think it is the saltwater pump that Charles has
> leaking, it has a long
> name I have forgotten( sounds Italian I think) If that
> is the pump it should
> be replaced with a Sherwood which is adapted to
> fit by the dealer. it pumps
> more gallons per minute and cools the engine better.
> If the Great Lakes guy
> doesn't have what you want you can also try Hansen
> Marine in Marblehead Ma
> 781=631-3282. There is a freeze plug on the bottom of
> the face of the engine
> where this pumps drip will run , if it goes on long
> enough, the freeze plug
> will corode and fail and you will loose the engine
> oil, again it happened to
> me in saltwater. Hope all ends well
>
> Dick
>
>
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