My rebuilt one cost around 600, but that was with a core. Mark

 

Dang! Where did u get it from. And where do u get them from does anyone have. One I can buy used?

 

If you are going to change the pump over I would go to a p pump. Unless the CAV pump and the ve interchange easily. If you have to go through all the trouble of changing all the injector lines and the timing cover anyway I would go to a p pump.

 

I don't think I have to change the timing cover. Or any of the injection lines the man at the cummins place said just find a ve pump change the injectors and ill be good. How much better is the one u are talking about

 

Here is one place. They are not cheap.At this price, you may want to live with 22 knots. You may be able to sell the one you have or maybe they may want yours and give you core credit on it...Mark

 

The CAV appears to use the same mount as the VE.



For a marine application, I would invest in a fresh pump. If a truck quits, you can walk home. If a boat quits, well....

 

Can one turn up a cav pump? I have no idea. Here is another place, with 800 dollar core charge...Mark

 

Google answered my own question, Here is a site that talks about juicing many different pumps, including the ve and cav...Mark

 

Juicing a lucas cav pump Here ...Mark

 

You may also want to ask yourself: "am I getting propeller slippage?" And is your drive a straight inboard, a v-drive or a sterndrive? Is there a reduction gear in the powertrain and if so, what is the ratio and how does that figure in RPMs at the prop?
There is more to a propeller than just diameter, pitch and number of blades. Do you use a cupped prop(one that has a visible, raised trailing edge)? They say the "rule of thumb" is to replace an uncupped prop with a cupped one you deduct about 2" in pitch. This in effect gives you the same propshaft RPM at a given forward speed of the vessel. Though I have seen 'em cavitate in reverse much above idle.
Was this a repower, after removal of a gas engine? The extra torque of a diesel often benefits a prop with greater disc area. This, if you have never read about it, is the ratio of blade area in relation to a solid disc of the same diameter. Ratios approaching(and occasionally exceeding) 100% are often achieved with five-bladed propellers(and on rare occasions, four-bladed). Some of the technical articles in magazines such as Boating can make for some interesting reading if you have the time!