Quote:
Originally Posted by dieselbenz1
About 20 years ago I went through 3 pumps on a 617 95 in an effort to keep temperatures normal after the OEM pump started leaking. I can not recall the makes but the first after market pump had cast small straingt impellers and the engine ran 15 degrees above normal, the second after market pump had longer impellers but fewer again cast worked a bit better maybe 8-10 degrees hotter than normal finally an OEM pump with longer curved impellers that appeared to be machined no over heating problems at all at 3x the cost of aftermarket pumps.
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I've seen those bent steel blades and never trusted them. The oem pumps with the curved cast or milled blades look great to me and apparently are the best from the above experience.
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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.