Posted by Alex J [216.54.94.2] on Thursday, October 03, 2013 at 07:36:03 :
In Reply to: Re: Cummins QSB 3.3T posted by Paul (in NY) [12.64.120.146] on Wednesday, October 02, 2013 at 22:31:39 :
I looked at a few of the 3.3QSB engines and in something like a Jeep, or Sami or similar they would be stellar, but even with the power bump of the Common Rail system on the QSB engines, you are still going to be wanting more. I fear my 3.9ISB common rail is going to be at its limits in my Carryall for my intended use but we shall see.
Additionally you gotta be careful with the original application of the QSB series of engines. Most of them were built for industrial applications for pumps and gensets. In my quest for a QSB4.5 I learned a lot about how expensive and pain it was going to be just to simply have the ECM program flashed over to allow the engine to run variable rpm. Legacy is paying an arm and a leg to do what they do.
Charles at M Series rebuild has better experience with this though. I am not sure if he is just running Electronic controlled VP44 pumps or if his new stuff is straight up CP3 common rail.