Impeller Help

geauxjoe

Cadet
Joined
Jul 29, 2003
Messages
10
I have a 94 sea ray sea rayder f14 jet boat with the 90hrsportjet engine in it.Would like to get a little more speed out of her what would be the best impeller to put on it for that just so right performance.The boat will top out now at about 44mph would like to go 50mph +. Thanks geauxjoe
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Impeller Help

Im sure no expert but impeller wise you are about it. unless it needs a rebuild.<br /> As I understand it Jets run something like<br /> 20 or 30% less than prop driven.
 

The Marine Doctor

Commander
Joined
Jul 25, 2003
Messages
2,177
Re: Impeller Help

I will take a stab at this.<br /><br />IF you have a 90hp Engine and it already runs @ the Max RPM's then I would think there is nothing you can do for an impeller to increase the speed.<br /><br />As far as I know the impeller works on the same principle that a prop does...a higher pitch impeller would = a higher pitch prop.<br /><br />You will lose hole shot and possbily top end as the impeller would be harder to turn.<br /><br />Although...I have heard of guys that "Sharpen" their impellers to cut the water better...this generally though gives better hole shot.<br /><br />Hope this kinda helps.<br /><br />TMD
 

geauxjoe

Cadet
Joined
Jul 29, 2003
Messages
10
Re: Impeller Help

Thanks for all the advice that yall gave me. I ordered a manual for it yesterday and I will give sharpening the blades a shot thanks again.
 
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