GM 6.5 V8 diesel. Calorifier connections?

[PCUK]

Can someone with one of these engines let me know where the calorifier should be connected? Thanks.

 

[Divemaster1]

Don't think these (V8, 4 stroke) were delivered as marinised versions from GM as they were predominantly automotive engines ... the were however marinised by several independents though (with mixed results), so you need to look at your coolant system flow. I also seem to recall that the higher rated engines may need an upgrade to the fresh water pump to cope with the additional water flow requirement of a calorifier as the original systems installed by the marinising company was on the edge of what it could cope with at the outset...

I would look at a convenient location near the thermostat housing for a take off point (not sure if it is best before or after the thermostat though ...).

this may help ..

http://coxeng.co.uk/engine/calorifier-installation/

 

[PCUK]

Thanks DM, GM did actually produce marine versions but this is a heat exchanger cooled conversion. We're going to sort it by experimentation if we can't find an owner with a calorifier connected. Personally I've always gone in below the thermostat to ensure a fast calorifier warm up so that's where we're starting. I'll let you know how we get on.