[C320-list] OVERHEATING PROBLEMS

[Kirk McCullough]

The only time in 10 years my Perkins has overheated is on one occassion when 
the intake got clogged with weeds. I used the dinghy pump to blow out the 
mass of eel grass and carried on my way.

Seems some of the Yanmars do overheat more than the Perkins.

Kirk
#!24


----- Original Message ----- 
From: <Tbuilder at aol.com>
To: <c320-list at lists.catalina320.com>
Sent: Monday, October 06, 2008 6:08 AM
Subject: [C320-list] OVERHEATING PROBLEMS


>
> Interesting thread! My first 320 #212 with a Perkins engine had absolutely
> no problems. The second 320 - # 1021 with a Yanmar engine which was 
> delivered
> in  UK in April 2007 overheated at anything much over 2000 rpm.
>
> I discovered that Yanmar had introduced an upgrade to the heat  exchanger
> sometime previously but for some reason my engine had the old  exchanger 
> still
> fitted. The original had about 8 cooling tubes inside it whereas  the 
> newer
> model has about 15 tubes. I spoke to the Yanmar UK main agent and had  a 
> brand new
> heat exchanger within a couple of days and it took about an hour to  fit.
> Result - no more overheating - unless I am getting weed in the raw 
> seawater
> filter!  It might be worth checking that you all have the improved 
> exchanger
> fitted.
>
> I am however experiencing a significant leak from the water pump bearings. 
> I
> have fitted two brand new pumps - under warranty - and also two new sets 
> of
> bearings. Yanmar say it is either an alignment problem OR the drivebelt 
> is
> too tight. I can't do much about alignment and am following the manual 
> exactly
> as far as belt tension is concerned. Has anyone else had the same 
> problem? I
> will have to respray the block this winter due to salt water  corrosion!
>
> Cheers
>
>
> Alec  Blanc
> FIGMENT III  #1081
> Lochaber Watersports
> Ballachulish
> Scotland
> _www.lochaberwatersports.co.uk_ (http://www.lochaberwatersports.co.uk/)
> 01855  821391 / 07831 846025
>
>
>
>
>