I was at a jobsite recently looking over a Cummins genset. It was one of the coolest things I've seen in a while. 2.7 MW genset, which is a 78L 18 cylinder Cummins motor that makes 3,800 hp at 1,800 rpm.

One thing that got my attention was the coolant filter setup. It seemed to have a full flow coolant filtration system. I like that idea.

It is my opinion that a coolant filter is VERY important on a hard working engine, so I plan on adding one after doing some searching on the subject and finding out the opinion of Cummins, Inc. regarding coolant filters on the B-Series engines.

I read through Cummins Service Bulletin Number 3666132-02 regarding Coolant Service. Coolant filters are described as "mandatory" by Cummins, Inc. on B-series engines in hard-use/commercial applications.

According to a Development Engineer at Cummins, the only reason that Cummins-equipped Dodge trucks do not have a coolant filter is due to space restriction under the hood. This is plenty enough reason for me to add one, but I want a full flow filter. I know a huge number of diesel owners who have added a bypass filter, but have always been discouraged from trying a full flow filter. I decided REALLY to find out why.

A long call to Cummins, Inc. led me to a very informative conversation with an engineer in the Experimental Engines department. He said that a full flow coolant filter was simply the best way to go on a Cummins, and the only reason to discourage the use of a full-flow coolant filter (and the reason that so many people use bypass style filters) would be the large size of a filter that could flow a high enough volume of coolant that it wouldn't become a point of restriction in the cooling system, even on a B-Series motor. It would never fit under the hood of a light-duty truck.

So I am now on a search for a large, high flow coolant filter and filter head to build a frame mounted coolant filter. I plan on routing my heater hose (before my evap. shutoff valve) down the firewall to a frame mounted filter and back up.

My question for the experts is this (it crossed my mind after I got off the phone with Cummins). Would the water pump on our trucks support this? Not the filter, necessarily, but the path back to and from the filter. I'm figuring 5-6 feet of heater hose each way, straight uphill on the return trip from the filter. What do you guys think?

 

https://www.dieseltruckresource.com/...d.php?t=209772


i use this set up, it works great !!!

 

That is a fine setup. I am planning something different.