Cooling/heating

[Aquatek69]

Hi,
My OM 601 2.0L engine installation is a little different to say the least, there are no wheels near it as it’s going to be fitted on a floating gold dredge and have a direct drive shaft to a German fire pump
Here’s my question, which scenario sounds the most feasible for engine cooling...

1. I remove the fan/radiator and fit a couple of inline strainers then feed the cold (very clean) river water past the strainers then around the engine and back to the river.
2. I use the radiator and fan and run the engine as normal with a mix of antifreeze/water.

The motor will be running at a steady speed of around 1500 to 1800rpm.

Any thoughts or ideas?? I don’t want it running too cold, or hot!!
cheers,
John.

 

[LostKiwi]

The normal way for marine applications is to use a water to water heat exchanger though our old canal boat just pumped unfiltered river water round the engine (but it was a particularly agricultural cast iron Perkins diesel).
The issue with river water is lack of corrosion inhibitors which can lead to issues with the water killing aluminium parts.

 

[Aquatek69]

The normal way for marine applications is to use a water to water heat exchanger though our old canal boat just pumped unfiltered river water round the engine (but it was a particularly agricultural cast iron Perkins diesel).
The issue with river water is lack of corrosion inhibitors which can lead to issues with the water killing aluminium parts.

Sorry I reread my post and was on the way to rewrite my it but you beat me to it... A heat exchanger was meant to be in the mix. So, the normal loop of coolant through the engine and riverwater through the heat exchanger. This warmed water could possibly then be pumped to the diver but that is a seperate project.

 

[LostKiwi]

Sorry I reread my post and was on the way to rewrite my it but you beat me to it... A heat exchanger was meant to be in the mix

It's the best way. You'll need a water pump of some kind to feed the heat exchanger. You could possibly use turbocharger chargecooler bits if you get a big enough one.

 

[Aquatek69]

It's the best way. You'll need a water pump of some kind to feed the heat exchanger. You could possibly use turbocharger chargecooler bits if you get a big enough one.

Yeah, I have lots of parts flying around so i’ll be able to hook a pump up somewhere....