Modified 701 X2 prop choice

fastgtfairlane

fastgtfairlane

Location
Charlotte, NC
I just went back and reread your first post. I'm not trying to sound like a smartass or anything but when you put the pump back in, did you seal the pump shoe? The 650 pump is 1 piece and the shoe must be resealed everytime. Only reason I'm asking is because it sounds like you are cavitating in choppy water. But it sounds like you have 2 separate issues. Impeller being too tall and shoe not sealed well enough. It's a pita and what sucks about the 650 pumps. Learned that the hard way once haha
 
catpower

catpower

Location
iowa
My bad for not including every detail in first post, but ya my third post I stated Silicone is good. I think the 5/8th throttle comment before it responds good is the best way to describe it. As I think this through it does make sense that the pitch is to high and loading the motor too soon at lower speed. Hookers out the door came in 9/15-10/16 & 11/17 from Dave at Impros. I’m at 12/18. By the time I send this out and get it back Iowa water is dead for wake traffic. I’d need a road trip south, LOL. I’ll look for other exit nozzles and make my own stubby cone along with a re pitch this winter. Watcon spoke of 750 kawi using 10/16. In an X2. Fastgtfairlane u might b on to something.
 
M

mikesx

In my FX1/Kawi 140 pump swaps I wound up using setback OEM SXR 800 impellers. On my 701 B pipe motors they gave pretty good all around performance ( surf, creeks).
 
S

Storbeck

Location
Minnesota
mikesx said:
In my FX1/Kawi 140 pump swaps I wound up using setback OEM SXR 800 impellers. On my 701 B pipe motors they gave pretty good all around performance ( surf, creeks).
Click to expand...

What size nozzle?

Supposedly SXR oem impellers are around 13/18, but I have not personally measured one.
 
catpower

catpower

Location
iowa
Assuming 13/18 is a sxr 800 oem prop that doesn’t mean my 12/18 is nearly identical. Here lies a problem understanding pitches. Unlike tire sizes under a uniform code these props have their own thing going on from mfg to another. I do believe the Hookers are not measured equal as one would think.
 
kevbo

kevbo

Location
dfw
Posted pitch numbers are basically meaningless. Thats why I said start with an impeller with no more than 1.5" between blades. A lot of load can be adjusted by bending the trailing edge up and down.
 
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