I need to spec a radiator for a diesel powered centrifugal pump. The engine is a 665 hp series 60 Detroit running at 88% load and it overheats in the hot summer sun. We can just get a radiator that measures the same size as the one from a truck with the same engine but my boss would like to get the right radiator for the job rather than just guess.
I have looked and not found a way to determine the size of a radiator in BTU per minute. Any suggestions?

Perhaps the radiator fabricator can help you size it. The standard automotive equvalent would be to add a row or two or three of tubes, depending on how many there are already and keep everything else the same if possible.

If you are stuck shoot me a message and I can inquire in the Caterpillar engineering department. I know some guys there.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I would call Griffin and tell them the specs on the genset and I would bet they have an app that they can plug that info into and it would spit out the model and specs you need.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Sup??? Captain Audio/Visual.

__________________
For the Saved, this world is the worst it will ever get.
For the unSaved, this world is the best it will ever get.

Clk's Ebay Stuff BUY SOMETHING NOW!!!

Yep, and IIRC they will calculate it using the hp number.

__________________
Jim

'sup, former Emperor of Beer?

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Plenty.

__________________
For the Saved, this world is the worst it will ever get.
For the unSaved, this world is the best it will ever get.

Clk's Ebay Stuff BUY SOMETHING NOW!!!

It comes down to 3 things on rejecting heat. The ability of the coolant to absorb the heat, the air flow to remove it, and the time that is spent doing both. If the coolant spends mor time picking heat up than giving it off the temp will rise.

If the fan is on check to see if there is room to put a shroud around the fan to help air flow through the radiator. Air picks up speed it will pick up more heat.

Hope this helps

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86 300SDL. 250,xxx on #14 Head. One eye always on temp gauge.. Cruising towards 300K

Griffin? I will look into that tomorrow. I apreciate the engineering department hookup.
If you circulate coolant too fast will you overheat? the opposite should be true right? not enough time picking up heat?

The design of the whole system comes into play. You must know how much coolant is flowing through the engine and homw much air through the radiator and insure there are no air pockets. And despite popular myth, you can't pump it too fast because in a closed system it is spending as much time absorbing as it does expending heat.

__________________
MB-less

Land Applications: Griffinrad.com

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Assuming you're pumping water, why not use a heat exchanger? How did a series 60 get such a high rating? That quite a bit above their OTR truck rating.

You may also find that the engine could be run at a lesser load with not much decline in its GPM output.

We are pumping water. We use an identical pump with a 1000 hp detroit V12. That engine doesnt work too hard at all but this poor bastard works its ass off.
Heat exchanger where?
We cant run it any slower, it has to run at a minimum pressure and we turned it down as far as we can.

I suspect he is suggesting using a heat exchanger in the water flow you are pumping. I good idea in theory but much more complicated than just upgrading your radiator. Have you tried cleaning the fins on the radiator?

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

This is common for irrigation pumps. Its cheap & nasty though as if you run out of water for a brief time you very quickly overheat the motor. I have seen many with heat exchangers swap them for radiators.
Most stationary engine applications size the radiator 30% larger than for a transport application.
Always go as big as you can. Dont skimp. If its a dusty location regular clean outs of the fins may be necessary.

__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving