Best prop?

[seeing clearly]

Does any one know the best prop for top speed on an 89 Vision 221 with a 454 mag? It has a Mirage ss 15" 23 deg.pitch on the bravo one now.There's a whole lotta bajas in my neck of the woods and I want to represent the Mates properly.So far so good but I'm open for suggestions. Thanks in advance .

 

[seeing clearly]

Does any one know the best prop for top speed on an 89 Vision 221 with a 454 mag? It has a Mirage ss 15" 23 deg.pitch on the bravo one now.There's a whole lotta bajas in my neck of the woods and I want to represent the Mates properly.So far so good but I'm open for suggestions. Thanks in advance .

 

[Eriktheviking]

I see clearly that you already have a nice prop on the boat. What kind of RPM's are you turning?Whats your current MPH? Stock engine? Best thing to do is find a marina that will let you experiment with a couple different props.Start with a 25 mirage and go from there.Good luck!

 

[seeing clearly]

I'm not sure what the top speed is 'never fast enough it seems'the motor is box stock and it turns about 4800 rpm.I believe the 89 454mag was suppose to have 365hp.A wise man once said" speed is money how fast do you want to go? "I'll have to take a gps for a ride to get a top speed .We don't have any loaner marineas in my area that I know of.So it will be difficult to experiment.I was kind of hoping someone with the same boat&motor already did the leg work.Thanks in advance for any more info.

 

[seeing clearly]

Any suggestions?

 

[Eriktheviking]

I could be wrong but I think that the 454 was 330hp.I believe 4800 rpm is the redline of that engine.Like you said,speed is money.To go REAL fast you'ed have to build up that engine so it had the torque to turn a 27 pitch prop. Maybe you could pick up a used 25 mirage on ebay.Try it out,if it doesn't work ,relist it

 

[seeing clearly]

I,ll see if I can come up w/one of those.The 454 has 330hp,the89 454mag is suppose to have 365hp.I know the mag has few goodies out of the box,like a steel crank,aliuminum intake,and a little more lobe on the cam than the 7.4.I think it's rated for 5000 or 5200.I've read in hotboat mag to not be afraid to spin them up to 5300,but I think 4800 sounds like it's wound up tight enough.I'll have to start playing the lottery,get me some more money.THANKS viking.

 

[BUKKAKIBLASTER]

Had 89 visions 221 454 mag & was told 330 hp at time of purchase.I would turn about 4800-4900 rpms, 23 pitch prop & have best ever 71mph on gps.Tried alot of props & found that the best 4 me.GOOD LUCK!

 

[seeing clearly]

I checked the sticker from mercruiser on the valve cover and it says 365hp.mag and w.o.t.5000rpm.The mercruiser repair manual gave the same info.Theres a 330hp and a 365hp the latter being the mag.Thanks ,So what are you getting around in now?

 

[seeing clearly]

Did yours "Vision" seem to want to porpois when you were just criusing in it?I seem to have to run mine around 3000rpm to get it to settle down.

 

[BUKKAKIBLASTER]

Never had trouble cruising,I did have trim tabs on it.? do you. Now have 97 280ZT!!!!

 

[seeing clearly]

Yeah,Its got trim tabs,looks like there made by boat leveler comp.I think they came on the boat when it was new. Don't know for sure cause I got it used.Sound right? I'm going to talk to TABMANII about hookin me up with some Bennits.How's that 280 treatin you,bet the extra room is nice.Is there a pic of it on the site?Have a good weekend!

 

[bud]

I currently own a 1985 checkmate boat. I lost
the prop first time out. Bought a new on a stainless steel. I need help with pitch. It
is a magnum 19pitch is this good for this boat
I have rebuilt 305 engine all stock parts
200 horse inboard/outboard

 

[Eriktheviking]

If you tell us what model Checkmate you got it would really help.There is a lot of stainless props out there but, not all will work right on your boat.A 14 1/4 X 19 pitch prop would be a good start.Turbo,and Quicksilver(Mercury) Laser are some nice props.Your RPM operating range is between 4200-4600 .You want a prop that performs the way you want ,tops out at about 4400 RPM's ,then

you'll be alright.

 

[Shameless]

Call Mike Combs at Checkmate, their number is on the website. He can tell you the best all around prop to run...

2003 ZT 240 6.2litre/Bravo 320 H.P. 24p Bravo 1

 

[bud]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Eriktheviking61:
If you tell us what model Checkmate you got it would really help.There is a lot of stainless props out there but, not all will work right on your boat.A 14 1/4 X 19 pitch prop would be a good start.Turbo,and Quicksilver(Mercury) Laser are some nice props.Your RPM operating range is between 4200-4600 .You want a prop that performs the way you want ,tops out at about 4400 RPM's ,then

you'll be alright.<HR></BLOCKQUOTE>

 

[bud]

This all the infor I have 1985 Checkmate
200 horsepower style is RNBT does not specify
a model # however the new prop is a Mercury
Marine Vengence Thanks for the reply
Bud in Epping

 

[Shameless]

Bud,
If/when you call Mike at Checkmate, give him the V.I.N. and he can give you all of the info such as model, hp rating, ect...

2003 ZT 240 6.2litre/Bravo 320 H.P. 24p Bravo 1

 

[showman62]

89 sportfire

18' 350 260 hp. have a 4 blade 17 pitch and only hitting 45. does anyone no what prop i should be using

 

[throttletherapy]

Did yours "Vision" seem to want to porpois when you were just criusing in it?I seem to have to run mine around 3000rpm to get it to settle down.

there is an old trick that bill combs himself told me when he used to race, if you take the most outside chime on both sides at the most rear of the transom and put a 1/4 inch thick of silicone at a slant. ( almost like a small hook, (straight down off the transom and then angled in toward the the hull.))this will keep the boat from porpoising and will not loose speed on the top end. this DOES work i have done it first hand.