232 prop ?
 

i have a 2002 232 w/ 6.2 mpi bravo 1 drive. Anybody know what the best prop configuration for this baja is? Thanks Lynn

Re: 232 prop ?
 

the 19 mirage plus is GPS @52.3mph at 4650RPM. HELP>>>Lynn

Re: 232 prop ?
 

FWIW - I had a 2000 232 with a 7.4 MPI / Bravo 1 setup with a Mirage Plus 23P and was consistently between 58 - 63 @ WOT (speedo, not GPS). The only mod was a K&N flame arrestor from Rexmar.

Re: 232 prop ?
 

We have sold several 232's with the 6.2l. The 19p mirage usually runs 58-60 on the speedo with a very good time to plane, this is the set up Baja ships the boat with. On most of the ones we sell we get rid of the 19 and put on a 21p mirage. Time to plane is still pretty good and top end increases to 63-65 on speedo. Hope this helps.

Re: 232 prop ?
 

Your probably running 1.5 gears,, and with the numbers you posted your slip comes out to be 6%... I would say nearly impossible,, slip w/ my 96 232 and a 23 mirage plus was around 12 %. I was seeing 58-60 at 4,600 rpms with 7.4 300 hp.

Re: 232 prop ?
 

These numbers don't seem to make sense either,,, what are the rpms's this motor is turning when your seeing 58-60 ?? you would have to be running at around 5,500 rpms to get those kinds of speed from a 19 pitch with a 12 % slip... but then again my speedo is off by 6 mph at WOT,, so maybe pol katt's GPS #'s aren't that far off... If thats the case,, these boats are pretty slow w/ the small blocks ???

Re: 232 prop ?
 

The numbers I posted are going off of the SPEEDO, maybe that is why the slip % is not making sense to you.RPM'S are normally around 4700-4800 with the 19p, 4500-4600 with the 21p.

Re: 232 prop ?
 

I currently have a 1996 232 with the 7.4 carb engine in it, with 2 people and 1/2 tank of fuel the best I saw was 62.6 on the gps. This was done with a 21p Mirage Plus and against the rev limiter the entire time. I am getting ready to try a 23p to lower the revs some and I will post the results when done.


p.s. Can tell me my prop slip. 21p, 62.6 mph (gps), 1.5 ratio outdrive, and about 4800 rpms

Re: 232 prop ?
 

Impossible,,, slip works out to 1 %... you would have to be turning 5,300 to get a 10% slip and even that is a bit low..

I had the same exact boat running a 23 mirage plus @ 4,600 rpms and 58-60 mph..

Re: 232 prop ?
 

We currently have a 232 with 496(mag) Mirage 23p that Huston Propeller worked on. We run 69mph (speedo) 4900rpm(tach) all day every day.

Re: 232 prop ?
 

Your #'s put you at 3% slip, which again is just about impossible,, if you figure a 10% slip your speed is right around 64 which sounds about right,, my speedo is 5-6 mph off also.. :) I'm sure if you GP's your boat you would find it to be right around 65 + or -

Re: 232 prop ?
 

All I can say is a fellow boater with a 25 ft outlaw with gps run 65mph wot and we walk away from him at wot.

Re: 232 prop ?
 

For anyone wanting to calculate TRUE slip numbers (if you have a GPS ) click here http://www.boatramp.com/prop_applet/...erAppletG.html

most of our boats run between 8-12 % slip, so you guys in the 1 % range like I said is just about impossible,, calculate away...

Re: 232 prop ?
 

Correct me if I'm wrong but if you have a prop labing / cupped don't you have to calc it at a higher pitch?
So if I have a 23 that Huston proper worked on shouldn't I calc with it as a 24/25 pitched prop

Your link only allows me to set pitch at 23 or 27 and speed at 60 or 70 and rpm at 4500 or 5000.

Using 23 / 5000 and 70 - YES you get 3.58% slip
If I use 27 / 5000 and 70 - you get 17.8% slip

So if I was able to use the following number

24 or 25 pitch / 4900 rpm / 69 - 68 MPH would that get me into the low end of your slip bracket 8-12%

Try this site too:
http://www.go-fast.com/Prop_Slip_Calculator.htm

Re: 232 prop ?
 

Click on the closest # to what your trying to calculate and use the + or - buttons to fine tune,, you certainly can go by 1" pitch increments, 100 rpm increments and 1 mph increments,, just use the plus minus buttons.. You can either calculate slip or mph... :)


These calculators are just a general rule of thumb type of thing, especially w/ labbed props, BUT,, slip #'s in sub 5% range are just NOT possible, you really need GPS speeds to calculate slip.

Re: 232 prop ?
 

Like I said fellow boater with GPS 65mph and we walk away (so to speak) with both WOT...68-69 not 64.

Didn't your mother ever teach you not to argue with a woman?

Re: 232 prop ?
 

I come up with the same slip results (12%) with both of those calculators for my boat.

Boatbunny, check you speed with a GPS in YOUR boat and you will see how fast you are actually going.

Re: 232 prop ?
 

Absolutely...it helped. My 232 acts like it has alot more horsepower!!!!! The 21p Mirage Woke up my 232. It is running 63mph with a full 76gals of fuel. Midrange has increased dramatically...Thanks For The HELP!!!! Lynn
(why would Baja ever use the 19p on a 232)

Re: 232 prop ?
 

232 + 375 hp = 64-65

So I'm in the same boat as the original poster with a stock 6.2 in my 232. Currently has a 19P from the factory and can do 55 GPS. Is the best option to keep the same prop just go to a 21P? Will 23P be too much, what about moving to a 4-blade? I'm mostly looking for better cruise speed, but getting past 60 GPS would be nice.

drew i have a 23 p prop for sale it isnt enough for my boat i was hitting the limiter at 5600 with it

Hey Ed - thanks for the offer. A buddy has a 23P so I can test with it, if it works Ill touch base to buy yours.

I'm really looking for improved cruise speed, is a 4-blade the best choice here?

I am in the same boat...I have a 6.2 with the factory 19p mirage. I want to jump up to 21p and see if I can get better cruise\top end speed. Where is the best place to get a 21p prop?

Thanks.

I have a michigan wheel 14" 21P 3-blade on right now. Just changed Saturday. When I have more data I will share, but initial impression is better than the 14" 19P 3-blade mirage+.

Thanks man, that would be great. Does it make a difference being a 14"? The 19p prop that is currently on it is a 15.25"? Is there a big difference in the Michigan Wheel and Mirage prop?

Well the Michigan wheel Apollo 3-blade 21p picked up 2.5 MPH (57.5 GPS) with at least twice the fuel and one extra passenger. Definitely was slower to plane. It also felt like there was more stern lift, but generally I'm not that impressed. Going to try a Bravo1 22p 4-blade Thursday night or Sunday. Will report back out again.

Thanks for the info...I'm chomping at getting a new prop. Just have no clue what to get yet. This really helps me out! What RPM are you running at WOT?

My tach is showing 5100-5200 with the mirage+ 19p and the MI 21p. Will let you know with the Bravo1.

I have a 454 MPI in my 232 islander and am running a 24p 4-blade Bravo and it works great. The hole shot is better than the 23 m+ and shows 63 on the dream-o-meter at 4600 rpms. I don't have any gps numbers but I know its faster than the mirage was, and it seems like less porpoising. Not sure how much difference there is between the 6.2 and the 454.

Hey Jetski is the 232 and the 23 outlaw the same hull? And if so let us know how the 4 blade works out as my numbers r same as yours with my 6.2

What is your Drive ratio? My buddy who I got the 22p Bravo1 4-blade from said his 454 wouldn't turn full WOT with it...

I assume it's a 1.5 but not 100% sure, I will take a peak the next time I pull it out of the water.

22P Bravo1 Prop numbers
 

Here's the first prop's set of numbers from last night all GPS. Bravo 1 - 22P 70 degrees, light chop, 500lbs of passengers and 1/2-3/4 fuel. Average time to full plane was 8 seconds.

RPM MPH Trim Position (based on fully down vs. factory set trim limit switch)
Idle 3.9 Down
1000 6.1 Down
2900 31 Down
3000 33 70% Up
4000 46 Down
4400 48 Down
4400 50 70% Up
4900 55 100% Up

Your speeds are right in the same area with a fellow boater Steve with the same boat and engine, only he is running mirage + 23. light loads he finds 59-60 MPH at WOT. Normal weekend load, 54-55 MPH

Do you ever use your trim tabs? I keep mine all the way up, unless the load is unbalanced and I need them to even it out.

Abs777 - I don't have trim tabs on my 232.

92nsx - I was really hoping to get consistent 60 out of the boat. Are his GPS speeds, I wonder how his midrange speeds compare? I have another 4-blade to try, Michigan wheel Apollo. Much smaller prop should have numbers this weekend. Also going to try a 21P & 23P Mirage + when I find a buddy with one to borrow.

Well ran the Apollo, it was pretty good. Nice hole shot and didn't blow out as bad in turns as expected. However still only getting 57ish out of GPS with two people and full of fuel.

Also ran the new-to-me 23P Mirage +. Too much prop for the 6.2, lost about 300-400 RPMs and topped out at 54-55 MPH. Was with two people and a full tank of fuel. Also time to plane was reduced. So I'm thinking a labbed 23P or 21P Mirage + is the way to go...

I have a 23P Mirage + for sale. With a stock(Well, upgraded exhaust) 330 HP 454 I have a consistant 62 MPH GPS reading with this prop. 1997 232.
$225.00 shipped to your door.

Hi kreed - thanks for the offer, but that's the prop I just purchased, I might consider having mine labbed. Your extra 10 hp must be just enough.