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Jet Boats
General Jet Boat Discussions
Jet outboard hot rodding/stainless impeller questions
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<blockquote data-quote="Lennyg3" data-source="post: 316035" data-attributes="member: 7217"><p>First off, i have the "AR" pump on my 225 optimax. Reading the outboard jet site it appears that the kit comes with a stainless impeller from the get go. Can anyone else confirm this? Do different impellers have different pitches like prop blades, or??</p><p></p><p>Next: Does anyone have any legit performance increases from going stainless? Is there any gain to be had in the top end department with a 4 blade stainless or is it just holeshot and midrange? My original thinking was that switching from 3 blades to 4 blades was like swapping steeper rear gears in a car where you gain performance out of the hole, but lose top end. Thinking about it more I would guess it doesn't matter how many blades you have as long as you are able to turn max rpm the top end should be the same, correct?</p><p></p><p>I had also read about something called a "hot shoe". I'm guessing this is just a ported/smoothed pump housing? Any thoughts on this? </p><p></p><p>The boat performs great as is, but the hot rodder in me can't help but want to go faster/tinker. I had considered getting the flywheel lightened, a set of reeds, and ecu reflashed by simon motorsports as well, but $1000 seems a bit steep for 1-2mph. Has anyone had any dealings with simon and what have your results been?</p></blockquote><p></p>
[QUOTE="Lennyg3, post: 316035, member: 7217"] First off, i have the "AR" pump on my 225 optimax. Reading the outboard jet site it appears that the kit comes with a stainless impeller from the get go. Can anyone else confirm this? Do different impellers have different pitches like prop blades, or?? Next: Does anyone have any legit performance increases from going stainless? Is there any gain to be had in the top end department with a 4 blade stainless or is it just holeshot and midrange? My original thinking was that switching from 3 blades to 4 blades was like swapping steeper rear gears in a car where you gain performance out of the hole, but lose top end. Thinking about it more I would guess it doesn't matter how many blades you have as long as you are able to turn max rpm the top end should be the same, correct? I had also read about something called a "hot shoe". I'm guessing this is just a ported/smoothed pump housing? Any thoughts on this? The boat performs great as is, but the hot rodder in me can't help but want to go faster/tinker. I had considered getting the flywheel lightened, a set of reeds, and ecu reflashed by simon motorsports as well, but $1000 seems a bit steep for 1-2mph. Has anyone had any dealings with simon and what have your results been? [/QUOTE]
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Jet outboard hot rodding/stainless impeller questions
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