Volvo TAMD 61A - dry exhaust switch over

[Ringhuc]

I am installing a TAMD 61A on my new (to me) vessel. It was originally set up as a raw water cooled system through the haet exchangers to closed loop system. My boat has twin keel coolers. I am having trouble finding the schematics for switching it over to a keel cooler system. I believe this requires me to remove the heat exchnage for the raw water portion and convert to just the single heat exchanger for the turbo cooler. Is this correct? If so, can anybody point me in the right dierection for the parts needed and a schematic?

thanks in advance

 

[QBhoy]

Might be easy for me to say...but would you not just be tempted to leave it set up as the engine is ? All you’d need is a skin fitting for the intake and a sea water strainer there after. Then obviously the raw water exit via the exhaust. They push some serious volume of water around them, the 61s. Im mid impeller replacement just now on our two 61s. They are quite serious machines, these things. I’m not totally sure that a keel cooling system would be sufficient for that engine. May be wrong...but I’d suspect you’d be in for a world of issues if you run this beast through keel cooling. Not many engines like that will be cooled in such a way, I’d imagine.

 

[scottie]

Might be easy for me to say...but would you not just be tempted to leave it set up as the engine is ? All you’d need is a skin fitting for the intake and a sea water strainer there after. Then obviously the raw water exit via the exhaust. They push some serious volume of water around them, the 61s. Im mid impeller replacement just now on our two 61s. They are quite serious machines, these things. I’m not totally sure that a keel cooling system would be sufficient for that engine. May be wrong...but I’d suspect you’d be in for a world of issues if you run this beast through keel cooling. Not many engines like that will be cooled in such a way, I’d imagine.

As long as the capacity of the coolers is adequate then it will do the job ok what was previously fitted ?
Ask Volvo for schematics and spec

 

[volvopaul]

I cannot see you having water cool enough to make the intercooler work properly , if that happens you will have poor performance, black smoking and piston detonation as your air inlet temp will be too high at higher rpm .
If your engine is set up to run via salt water heat exchanger then set it up to draw salt water from the sea.

If the installation requires a dry exhaust that can work by just pluming the salt water discharge directly above the waterline , but bear in mind that the salt water through a rubber exhaust will also act to reduce noise from the exhaust .

 

[Ringhuc]

The motor is set up for raw water cooling. I think the keel coolers would be large enough, I will calculate the volume tomorrow. However, it does seem easiest to keep the motor as is and not try to reinvent the wheel. I appreciate all your input.
I'll also ask volvo for the schematics I need.