Mag pump and impeller pitch

550/440

Maybe I'll get it all the way around NEXT time....
Location
Arizona!
I’m running a 144 stock Yamaha pump, and will be buying a stainless mag stator soon. Do I need to re-pitch or change my impeller? I just read through 5 pages of posts via the search button, and still don’t have an answer. Thanks in advance.
 
Both Solas, and Skat pumps have a large 75mm hub, you will need an impeller to match that. (IE Large hub Solas, hooker, or C-75 Skat)

The 12-vein pumps are more efficient, and will load your engine harder. A large hub impeller is more efficient, and will also load harder. You will most likely need to pitch down if have not changed anything else.
 

550/440

Maybe I'll get it all the way around NEXT time....
Location
Arizona!
What impeller are you running?
I haven’t pulled it from the ski I bought, and I’m not able to see any markings on it. Looks like one of the Impros Hookers. Needs rehabilitation anyway, but not sure if it’ll need stepped down a notch. The skis rips already... it’s got the big bore 701 Blowsion engine (771 currently).
 

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I haven’t pulled it from the ski I bought, and I’m not able to see any markings on it. Looks like one of the Impros Hookers. Needs rehabilitation anyway, but not sure if it’ll need stepped down a notch. The skis rips already... it’s got the big bore 701 Blowsion engine (771 currently).
 

Proformance1

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Location
New York Crew
I’m running a 144 stock Yamaha pump, and will be buying a stainless mag stator soon. Do I need to re-pitch or change my impeller? I just read through 5 pages of posts via the search button, and still don’t have an answer. Thanks in advance.
for optimal performance yes, new or revised impeller.this is why most peeps choose the 148 or 150 at that point. Youre already buying a new prop, may as well go bigger
 
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