AusCan
Guru
- Joined
- Jul 15, 2012
- Messages
- 3,218
- Location
- Australia
- Vessel Name
- Kokanee
- Vessel Make
- Cuddles 30 Pilot House Motor Sailer
Having a 30 year old raw water cooled diesel, I'e got a few choices.
1. Do Nothing. Just keep an eye on the temperature and hope the heavy old block and water jackets last a few more years.
2. Change over to a fresh water cooled system with a Heat exchanger and hope it lasts a few more years.
3 Install a keel cooled system.
4. Leave it raw water cooled but circulate fresh water through the engine when back at the dock before shutting down. (and hope it lats a few more years)
I'm leaning towards the 4th option, as it is minimal cost and may reduce the ongoing corrosion rate by.... 1% / 90% -... I don't know.
It will leave fresh water in the water jackets for 95% of the overall time;
but - is the corrosion mainly happening during run-time, or is it equally rotting out while my engine is sitting filled with sea water at the dock ?
Any thoughts on this?
1. Do Nothing. Just keep an eye on the temperature and hope the heavy old block and water jackets last a few more years.
2. Change over to a fresh water cooled system with a Heat exchanger and hope it lasts a few more years.
3 Install a keel cooled system.
4. Leave it raw water cooled but circulate fresh water through the engine when back at the dock before shutting down. (and hope it lats a few more years)
I'm leaning towards the 4th option, as it is minimal cost and may reduce the ongoing corrosion rate by.... 1% / 90% -... I don't know.
It will leave fresh water in the water jackets for 95% of the overall time;
but - is the corrosion mainly happening during run-time, or is it equally rotting out while my engine is sitting filled with sea water at the dock ?
Any thoughts on this?