[C320-list] OVERHEATING PROBLEMS
Tbuilder at aol.com
Tbuilder at aol.com
Mon Oct 6 06:08:46 PDT 2008
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
More information about the C320-list
mailing list