[C38] Heat exchange

[Chapuys at aol.com]

Thanks, Tom.  I finished the heat exchanger swap out (sweat out) and  ran 
the engine at the slip in gear at 2500 rpm for 1 hour.  The temp stayed  
between 165 and 170 with tons of water pouring out of the exhaust. Used to have  
a trickle.   Before it would have hit 200 in 10 minutes.   Tomorrow I am 
going to head out early under power and confirm.  Swapping  out for that 
larger 3" exchanger was priceless advise.  Seems the  thermostat is working fine 
so I am going to fly as is for the time being.
 
Thanks to the Cat38  gang for fixing my problem.
 
Bob Miller
"Bolero" at Southwestern YC in San Diego
 
 
In a message dated 9/6/2009 3:32:08 P.M. Pacific Daylight Time,  
tdtron at earthlink.net writes:

 

Hello Bob,
 
Going the "whole 9 yards" is usually a good idea but have you priced the  
thermostat yet?
 
An easy way to test any thermostat is to drop it in a sauce with water  and 
boil it on your range.  You can watch it as the water heats up and if  the 
thermostat opens before the water boils, you have good  thermostat.
 
Tom Troncalli


 

----- Original Message ----- 
From:   (mailto:Chapuys at aol.com) 
To: _listserve at catalina38.org_ (mailto:listserve at catalina38.org) 
Sent: 9/6/2009 5:07:40 PM 
Subject: Re: [C38] Heat exchange


I have almost finished installing the new heat exchanger on "Bolero" in  
San Diego.  Just made my third run to the marine hardware store.   I will let 
you know how it works out.  I should probably go the  whole 9 yards and 
replace the impeller and the thermostat too.
 
Bob Miller
"Bolero" at Southwestern YC in San Diego
 
 
In a message dated 9/6/2009 12:10:53 P.M. Pacific Daylight Time,  
panotte at shaw.ca writes:

So I"ve been reading all the info about heat exchangers and feeling  prety 
smug as everything looks good on Impulse. I was going to change the  oil 
yesterday and started the engine to warm things up, poking around as a  good 
obsessive compulsive will I noticed a small leak where the rubber  outflow 
hose connects to the heat exchanger. Ok you guessed it one little  wiggle and 
there I was holding a rotted off  piece and muttering  curses, while at the 
same time giving thanks for this site and all the  info. available here. Of 
course we were planing one more trip however it  will suffer only minamal 
delay thanx to this site.
 I noticed I think it was Steve mentioning 6 knots at 1800 rpm I  run at 
2200 most of the ti9me what prop do you use?
  Paul  Impulse


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