Prop for a 24
 

Ive been trying to get this boat in the water for more than two years and finally getting close. I hope to brake in the engine this month but need a prop not sure what one to buy. 454 around 500 hp. Bravo one drive. 24 Pantera.

Re: Prop for a 24
 

Probably a 25P or possibly 27P Mirage Plus.

I think I have both if you're interested...

Re: Prop for a 24
 

Do you have a web sight where I can check out the prices of them or are they used ones ?

Re: Prop for a 24
 

What drive height are you running? What is the target RPM's? I also have a few for sale that worked well on my 24. Chris

Re: Prop for a 24
 

They are my personal props.

Re: Prop for a 24
 

What year is the boat ? & did it come from the factory with a bravo , or is it a converted TRS boat ? Because what Ironman said about drive height is crutial. If the boat left the factory with a bravo on it & the drive height hasn't been messed with I can asure that it is right , because Pepe & Jo know there stuff ! Also how shure are you of your 500 hp # ?
If you are not for shure , Either Post your motor combo or send me a P.M. with the combo including parts such as heads, compression ratio, camshaft, intake & carb, ect.. Also what exhaust you will be running.

Re: Prop for a 24
 

Thanks for getting back to me I asked if you had a web sight because it did not come up on my computer but it did on my fathers that I thought was weird maybe because I'm using firefox. I need to get all my info together about the boat I'm hopeing to make this a one shot deal If that is possible. I thought there would be one prop that would work the best for a 24 with my hp.

Thank Todd

Re: Prop for a 24
 

I need to get more info together but I do know the boat is a 1980 24 Pantera that has two fuel tanks in it. I cut the hole in the back of the boat for a Bravo one it had a trs in it. I think the center line of the crank was 17" from the bottom of the hull. I got the number from one of the guys from Pantera a couple of years ago. The motor is a 454 board out 60 JE racing pistons 9:50 1 merlin heads with those good vales that I cant spell some thing like ekino. air gap intake roller rocker's, 1" spacer, Bary Grant 750 mechanical carb. exhaust is stainless Marine 4". and Crane cam.

Manufacturer: Crane Cams
Camshaft Type : Hydraulic Flat Tappet
Basic RPM Range : 2500-5500
Camshaft Duration @ 0.050" I/E : 226�/236�
Advertised Duratation, Int. / Exh. : 286�/296�
Valve Lift : .534"/.553"
Rocker Arm Ratio : 1.7:1
Lobe Seperation Angle : 112�
Valve Lash Settings : Zero
Idle Quality : Fair
Lifters Included : Included
Camshaft Series : PowerMax
Grind Number : H-286-2

Re: Prop for a 24
 

I personally would start with a 25 pitch mirage, although I ran a 25 tempest on my 24 that ran well. They are mainly used on bass boats. They have a lot of rake which gave me a lot of bow lift & made it a handfull to drive but it worked well on my particular boat.
My boat was a 79 & I was still running a TRS so I had a little more weight & was being robed a little power by the TRS over a bravo. Also I am shure my drive was a little deeper in the water.
Motor was basicly the same with the exception of the heads. Cam size, my compression was about 9.6:1 , rockers , lightning headers, 750 carb , intake was a performer 2.0 ect..... I was running a set of 049 oval port heads that I done some portwork on ( nothing exotic.) I was probably making around 475 hp
My boat consistantly ran right around 69.5 - 70 on the GPS
( not the speedo ) With only around 9% prop slip That was running the boat really hard with alot of trim , Which is how my particular boat ran the fastest , which along with a high rake prop. was the ONLY reason it was a handfull to drive. You should be making a little more H.P. than me due to the heads. I really needed to turn mine a little harder to get a few hundred rpms out of it such as a 23-24, 0r labbed my 25. but you should pull the 25 fine due to the fact that you should have that extra little H.P. & less drag from the bravo
Like I said my recomendation & its only a recomendation based on the info given would be to start with a regular 25 Mirage.

Re: Prop for a 24
 

Sorry I took so long to get back. I don't what the boat to be hard to handle because this is my first boat. And do you recommend on buying a new prop or used for the first one ? One more thing What about a Bravo one?

Re: Prop for a 24
 

I have a 3blade hydromotive 24 that worked real well on mine, I got 68.1 at 4950 and 76.5gps at 5550rpms With your motor you would be somewhere inbetween but it does not run as fast on flat calm water. If you are interested in the Hydromotive let me know. I also have a mirage plus 25 but I do not think that a non roller 454motor will turn it past 4800. Otherwise you could get a 23 mirage plus used from the classifieds and that should get the motor to about 5400 and be a good all around prop to start with. Your boat should handle real well with the hyd steering with any of the above props. The bravo1 is also a good all around choice but it will cost a few mph on top unless it is lab finished. Chris

Re: Prop for a 24
 

I have ran a Mirage +, standard Mirage, Hydromotive Quad IV, Turbo and Bravo 1 on my 24 and the Mirage is the fastest.

Quad IV ran way too flat and needed a ton of trim.

Bravo 1 threw the boat around way too much.

All the 3-blades were pretty close with the Mirage being the fastest. However, the cruise rpm sucks and they do blowout getting on plane once in awhile.

Re: Prop for a 24
 

I found the same thing with the Q4 on my 24. The Hydromotive 3 blade is VERY different than the Q4 but still not quite as much bow lift as mirage when it is really calm. Midrange was decent too with that prop too because of the 15.5 diam but not as good as the B1 4 blade. We did a back to back test of 3 blades on my friends Donzi, 25 mirage 26 Hydro3 bl and 25 mirage plus and the Hydro 3 was fastest on that particular boat by almost 2mph over the mirage, and the plus was about 1.5 less than the std mirage. I only found the bravo to throw the boat around when it was really rough 3's to 4's and up but my B1 was labbed and that may have made a difference.

Re: Prop for a 24
 

I have a 23P Mirage that you can try also.

Re: Prop for a 24
 

Hmmm, maybe I need to try a Hydro 3 blade! :D Do you still have the prop?

I found the same with the Bravo in the sloppy water. I tested it on calm water and loved the planing and cruise. Went out a few days later to a bigger lake and it was sloppy out. Not big water just washing machine slop. I couldn't even drive the boat! I tried several different things and it never felt "right". Weird because I know some people(including Jo) run the Bravo 1 on occasion.

Re: Prop for a 24
 

the wife and kids will be out with me a lot on the boat so I would like to have a good cruise speed seeing that's where I'm guessing I will be 90% of the time. sorry for all the questions I just hope the first prop I get works well for me. As you can tell I know noting about this and I cant believe the difference from one prop to another with the stern lift, not as fast on flat water, hard to drive in rough water.

Re: Prop for a 24
 

If you're X is at 17" the and you cruise 90% of the time I would try a Bravo 1. What rpm should your motor run at WFO?

Re: Prop for a 24
 

I have the following sitting on my shelf in my garage:

Bravo's - 24P, 26P, (2) 28P all RH Rotation

Mirage Plus - 23P, 25P, 27P all RH Rotation

Mirage - 29P RH Rotation

Stern Driver - 28P RH Rotation

For the cost of shipping, you are welcome to try any of them until you figure it out.

Sincerely,

Kirk

Re: Prop for a 24
 

Kirk what is working best on your 28 now?

Re: Prop for a 24
 

Hey Guys,
T-Mone and switch props last night while cruising around the CT River.
I normally run a labbed 28 Bravo that I am quite happy with, but I wanted to through a 3 blade for the hell of it.
T-Mone's labbed 27p Mirage + was about 1.5mph faster at WOT (5000rpm) vs. my 4 blade, but about 5mph slower at 3500-4000rpm.
The 3 blade also took some feathering to come out of the hole.
I have found 4 blade props are better all around vs. 3 blades on these type hulls.
I have not tryed a 15-1/2 dia 3 blade as of yet though...

Re: Prop for a 24
 

Ironman -

I had been running the 26P Bravo, until my low oil pressure issue. 76.8 MPH GPS was the best so far. My new engine will hopefully get me closer to 90 MPH. Then I'll need the 28P or a 30P. :evilb:

Re: Prop for a 24
 

What are you going for in the new engine, or is that top secret?? I am going to do new power once I can sell my 24.. Chris

Re: Prop for a 24
 

OARS!!

Re: Prop for a 24
 

Hey Fellows,
I had a chance to try T-Mone's labbed 27p Mirage plus this past Friday... :cool:
My boat was faster on top by 1.5-2mph but the boat did not handle nearly as well as with my Bravo 1. Cruise speed at 3500rpm was down about 5mph also.
IMO, the added speed is not worth the handling deficiencies with the Mirage +...
Has anyone ever tried a Hydro QIV-X 4 blade?

Re: Prop for a 24
 

Kirk, what kind of pwr pushed the 28 to 76.8 and what kind of rpm

Tom

Re: Prop for a 24
 

638 HP at 5600 RPM I believe. I have to verify the RPM.

My new engine plans have changed several times. First I was going with a 700+ HP naturally aspirated EFI Engine, now I bought an M-3 with large intercooler and might build a 540 fuel injected with the M-3, should be 800+ HP at 6 PSI of boost. There will be no engine if I don't figure out my drive issue first. An XR wll not last real long behind that power and I'm not taking the chance. Boating season is too short here in IL.

Re: Prop for a 24
 

I'm guessing 5000 rpm

Re: Prop for a 24
 

I thought you were a konrad dealer...
you cant be seen driving around w/ a merc drive! :eek:

Re: Prop for a 24
 

Bravo's - 24P, 26P, (2) 28P all

Re: Prop for a 24
 

If you are really at 500 hp and need to run at 5000 rpm I would say the 26 Bravo would be the best starting point.

Re: Prop for a 24
 

Based on your motor specs I would try to prop for 5000 to 5300 so that the motor will make the most power. If you are leaning twards the 4 blade I think that a stock Bravo1 24 pitch would do the trick or a labbed 26. A 3 blade would still be a little better on top end but you may like the accelleration, midrange, and handling of the 4 blade especially if you plan to take a few people with you. I think that Stormrider had a 500hp 454 in his 24 maybe he will chime in.

Re: Prop for a 24
 

Yes, my 461ci was making 560hp @ 6000rpm, 540hp @ 5500rpm, and peak torque of 550 @ 4800rpm.
I liked my 23mir+ the best. 3500rpm=45.5mph 4000rpm=52mph 4500=60 5000=68 5500=75(max) cruise 3800=50mph.

I didn't like the 22b1 i tried, handling wise.
4000rpm=50 5650rpm=72(max)

Maybe a labbed 24 would have been the ticket, but i liked the handling characteristics of the mir+ better and was happy w/ the speeds.
Didn't feel like spending another 800+ for 1mph or so.

Re: Prop for a 24
 

Hey Noboat,
Which model Turbo 3 blade did you try?
I'm going to try either a Lightning or their new TXP ø14.75".

Re: Prop for a 24
 

Konrad Drive, CMI Headers, Ateco Engine - $ 60,000+ :eek:

Re: Prop for a 24
 

And the boat from Pantera??? priceless :D

should be no more than 50-60k.

Re: Prop for a 24
 

I tried an older version which Precision said was like their Tutbo 1. It's funny you say that about the Lightning cause I just posted the same exact thing about wanting to try one of those props on Donzi.net the other day.

Re: Prop for a 24
 

New prop to test on it's way from Turbo... :D
More to come next week.

Re: Prop for a 24
 

Just have them ship it to my house. I'll try it on my boat then send it to you! :evilb: :D

Re: Prop for a 24
 

E-mail this guy, and he'll hook you up... :drink:
[email protected]

Re: Prop for a 24
 

From another thread...

Quote:
Originally Posted by jayhawk261
How's your prop testing going?



Funny you should ask, I did get out to try another this afternoon...
We had 2 on board and 1/2 tank of gas.
First we ran with a Turbo Fusion 4, 14.5" dia. X 27p.
Then my labbed 15.25" dia. X 28p Bravo 1.
My boat handled vary well with the Turbo, the hole shot was excellent and the prop never broke free in corners. Top speeds were 73.6mph running north and 74.1 running south @ 4800rpm.
The labbed Bravo 1 was faster on top, 75.3mph running north and 76.1 south @ 4900rpm. With the Bravo 1 the boat seem to run a bit higher in the water when I trimmed up in calm water.
The Turbo felt a little more stable navigating through the 3-4ft confused water we experienced in traffic.
I'll be sticking with my labbed B1 because it is a little faster, probably because it is "labbed"...
__________________
Patrick