What pitch impeller for 144 pump swap??

motoman96 · 12-01-2009, 10:42 PM

I got all my parts in today, but I need an impeller. I am currently running a skat 18/23 but that will be history shortly. Who has some insight as to what a good pitch is for a pump swap? I enjoy the bottem end snap that I currently have, not too concerned with topspeed. Thanks in advance

MNTURBO · 12-03-2009, 02:31 PM

I called Dave at impros - he recommended a hooker 9/15 for my ski with a 62t/61x, b pipe, ada head, msd

this prop can be used with stock to limited setups

motoman96 · 12-08-2009, 01:45 AM

Anyone else? How about getting it setback? If so, how many mm??

attnondeck · 12-08-2009, 01:50 AM

i hear a stock js550 prop gives you awesome low end!!!! i have of if ya need it... hahaha

motoman96 · 12-08-2009, 01:53 AM

Thanks Brendan, but I'm looking for a hooker like stated above. Plus, I love hookers....

attnondeck · 12-08-2009, 02:02 AM

i know im just messin with ya!

KR · 12-08-2009, 03:07 PM

Quote:

Originally Posted by motoman96

Anyone else? How about getting it setback? If so, how many mm??

Cant get a setback impeller. The threads on the FX1 driveshaft go deeper then a superjet. A setback impeller would hit the pump vein and the driveshaft wouldn't turn.

motoman96 · 12-08-2009, 03:50 PM

Thats good to know, thanks!! Im gonna get a hooker 9/15 and give it a try

MNTURBO · 12-08-2009, 07:19 PM

Quote:

Originally Posted by krickon

Cant get a setback impeller. The threads on the FX1 driveshaft go deeper then a superjet. A setback impeller would hit the pump vein and the driveshaft wouldn't turn.

really? uh oh the hooker comes setback 7mm! I havn't tried installing it yet...

Edit: I suppose I could make a spacer to un-setback the prop?

KR · 12-08-2009, 11:19 PM

I originally had a Skat 13/18 cut-back 3mm. I put a stainless steel washer and then the impeller and its been that way for a year.

May want to use another washer depending on its thickness for 7mm. Not sure how that would affect the performance since that impeller was meant to be set back. Good luck though!