I'm new to this forum, as a member
. but have been reading it for a while and am impressed with all the knowelage, imparted here.
I have a pearson
424 with a w60 auxiliary. It started overheating
at around 1200 rpms. I noticed the water
flow out the exhaust
was weak. I acid bathed the heat exchanger
and flushed the fresh water
side and it helped a little I then was able to get up to 1500 rpm
. I found that the raw water
hose on the suction side was collapsing. I replaced that with pipe and hose at each end for vibration and installed a new raw water pump
. things got better, but still overheated at 1800 rms I've flushed the whole raw water
system, including the through hull
, with muriatic acid. it improved the water flow. but am still overheating at close to 2000 Rpms. I'm stumped. there is no smoke out the exhaust
, white or balck. I've been looking for a way to bypass the h2o heater but haven't found a diverter valve that will handle the temp load.
Any replays are greatly appreciated.