2002 SX190 150 VMAX CARBED

[airc1979]

I bought this boat a few months back and I love this boat. But I am worryed that I am not turning the correct rpms for this vmax. It has a 25m prop on the 150 and I can only trun it 5200-5300 rpms at wot with 2 people and my gear. No gps but the speedo says 64 I know thats probley more like 59 or 60 but I know the rpms are a correct reading. The boat has a very good hole shot it beats my dads TR18 with a 150 johnson perttty bad. Should I buy a 23m prop and try it out? I do not have a jack plate and the motor is mounted int 2nd hole.

[PSM207]

The 23 will make it come alive.

[fishin couillon]

That is what i turn, 23M. My r's are summer time 5600-5800 (56-58 mph gps) and winter i can get up to 6000 r's (62 mph gps). I have never ran a 25 so can't compare. But imagine that it would spin to good with this humid weather down here in the summer.

[Bass Junkie]

I would try a 23M or 23 Tempest.

[ChrisH]

23 M. you can have it tweaked a little bit if you want to.

[dcbassman]

How high are you running the motor(How far below pad)?

[Marsh Skeeter]

I am running the same rig with a 25M and can pretty consistantly run 5300 @ 60 mph in the summer and 5500 - 5600 @ 63 mph in winter.

From what the others are saying about the 23 M; In my opinion, you want really see better performance (speed), just higher RPMs.

It may actually be better for your engine NOT running higher RPMs.

[PSM207]

Hole shot should be very good with the 23, and the engine will not lug so much at WOT.

[ChrisH]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Marsh Skeeter &raquo;</TD></TR><TR><TD CLASS="quote">

It may actually be better for your engine NOT running higher RPMs.

</TD></TR></TABLE>its actually better to run the higher RPMs because your engine is not struggling like it does with the bigger wheel

[airc1979]

Is that gps mph or speedo?

[airc1979]

I have not measured any thing and do not have a jack plate, but it is mounted in the 2nd hole from the top. How do I measure how far below the pad ?

[Skeeter Jay]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Marsh Skeeter &raquo;</TD></TR><TR><TD CLASS="quote">I am running the same rig with a 25M and can pretty consistantly run 5300 @ 60 mph in the summer and 5500 - 5600 @ 63 mph in winter.

From what the others are saying about the 23 M; In my opinion, you want really see better performance (speed), just higher RPMs.

It may actually be better for your engine NOT running higher RPMs.

</TD></TR></TABLE>

Marsh hit it right on the head, I've ran both 23M and 25M and I really didnt see a performance gain, just a difference in RPM's. Well I guess thats kind of a lie, I would have to say that the hole shot was quicker with the 23, but over all not any difference in speed. But from what everybody has said and everything I have read those RPM's are supposed to be better on your motor since its not lugging around. But I never saw the speeds that Marsh has seen with either props. Best I have ever ran with a M prop was just over 61 GPS and that was cold winter time. I have seen those speeds and faster with different props, but not stock M's.

[Marsh Skeeter]

Thanks Jay. I should clarify that 63 gps was a one time event and not consistant. 60-62 is pretty common though.

I am not a prop expert by any stretch, maybe if someone really wants to see what they can get and don't mind spending the money.......how about try a 24 Tempest or maybe one of those new Fury props.

Talk to the prop experts.

By the way..........adding a jackplate to this boat doesn't seem to make a performance difference either...............just voids your warrenty.

[Skeeter Jay]

I tell ya, my best all around prop to date is an older 25p Tempest A40 thats been balanced and blue printed, its not the fastest I have ran but its got a good mix of speed and handling. I can run 62 in the summer just myself, runs right at the 60 mark loaded down with a partner and then in the cooler months it will run 63-64 easily just me and over 61 with a partner. I will argue that a plate doesnt do much for our boats, a plate and some time trying props will definetly get you a few more mph. My boat stock with the 23M would only run around 58-59 with just me in it, after I put the plate on and did some height adjustments I was able to run between 60-61 with it in the cold, so I would say that it made a 1-2mph difference with that prop. I wouldnt say that just bolting a plate on really adds a lot, but the combination of it and spending a lot of time running different props will sure make a difference. But the bottom line is if you want to go faster get a bigger boat.. I spent a lot of time and money trying different props on this boat a couple of years ago and it didnt get me but a couple of MPH. If I do anything else for speed it will be selling this one and getting a ZX200