Water Pump Question

[GLF]

A friend of mine needs to change his water pump on the motor on his boat. It is a 4.3l v-6.

Is there a difference between a marine and an automotive waterpump?

[pbrktrt]

Mike, I'm pretty positive they are different. Napa has a marine catalog that they will give you & you could order from that. They get their parts from Sierra Marine so that's another option. I guess it boils down to how fast he wants it & what he wants to pay. Good luck.

[anthonyyost]

Probably just the price

[GLF]

One of the things were are concerned with is the RPM's. The boat is turning 4000-4600 rpm's while running. A truck only turns 1800-2500 RPM's while driving, unless under exceleration.

[trucktramp]

Speed of the pump would likely be determined by the driven pulley size. From what I understand (which may not be much) some of the marine engines are not automotive based. My mercruiser is in that catagory. Otherwise, I would think that a pump is a pump as long as the bolt patterns and snout lengths are the same.

Good Luck

[Just Hook'n]

What I typically do is get the part number from Yacht Basin in Holland. Then I run the "cross reference" software at Parts Plus or Advanced Auto. Sometimes it works (like stators, wires, stuff like that) othertimes the parts are specific, like carbs alternators, etc.