Need advice on prop size.

camaro ss · 05-15-2010, 07:17 PM

Took my boat out of storage and to my surprise my prop was stolen. I'm looking for opinions on size. I had a mercury mirage stainless prop but not sure on the pitch maybe 23"? Any ideas out there? It's 237 powerquest with a 454 carb 300 horse power.
Thanks

BroadHopper · 05-15-2010, 09:55 PM

Sounds about right for a 300 HP motor. I think that is standard for the 454.
I have a 454 in an F-223 LS. I have a SS Bravo 23" and a SS Bravo 25" available. I am currently happy with a SS Bravo 4 blade.

If interested, I will let you try props and I will give you the option to buy.

camaro ss · 05-16-2010, 07:56 AM

Will they fit on a Bravo 1 outdrive?

BroadHopper · 05-16-2010, 08:43 AM

All 454s after 1987 have Bravo drives. Yes they fit a Bravo I with standard rotation.

camaro ss · 05-16-2010, 09:06 AM

OK thanks.

Woodsy · 05-16-2010, 06:48 PM

Powerquest should be able to tell you what prop was originally installed....

If not, most marinas will lakeport/irwins etc have spare props you can try out with a deposit... the 23 Mirage sounds about right but the best way is to test...

Woodsy

OCDACTIVE · 05-17-2010, 10:50 AM

I would bet the 23 is right... The 25 may be too aggressive of a pitch. I have a 500HP running a 24 (4 blade) I can't imagine you needing more then a 23.

Please let us know what you end up with.

Check out

http://www.offshoreonly.com/forums/prop-talk-165/

If you start a thread there I am sure you will get a lot of good advice on props and tests.

Good luck

BroadHopper · 05-17-2010, 07:43 PM

I bought the Formula with a Michigan SS 21" 3 blade. The motor was on the rev limiter at full throttle. I was able to swap for a 23" Bravo 3 blade. I hit the rev limiter with light loads in the boat. I bought a 25" 3 blade and the boat tend to blow out the prop. It did not hit the rev limiter when it is running right. Later I bought a 24" 4 blade and I am happy. No blowouts even in hard turns. Vibration is a lot less and great holeshots. I was able to save another gallon per hour.

Can't find on the INTERNET the difference between Bravo and Mirage props. Someone says the Mirage is a cupped Bravo. My Bravos appeared to be cupped. My Bravo 4 blade appears to be cupped as well. When I get a chance I will attached pictures of the props.

OCDACTIVE · 05-18-2010, 10:49 AM

Quote:

Originally Posted by BroadHopper

I bought the Formula with a Michigan SS 21" 3 blade. The motor was on the rev limiter at full throttle. I was able to swap for a 23" Bravo 3 blade. I hit the fev limiter with ligh loads in the boat. I bought a 25" 3 blade and the boat tend to blow out the prop. It did not hit the rev limiter when it is running right. Later I bought a 24" 4 blade and I am happy. No bowouts even in hard turns. Vibration is a lot less and great holeshots. I was able to save another gallon per hour.

Can't find on the internet the difference between Bravo and Mirage props. Someone says the Mirage is a cupped Bravo. My Bravos appeared to be cupped. My Bravo 4 blade appears to be cupped as well. When I get a chance I will attached pictures of the props.

Careful with your 4 blade. It may give you the best overall performance however it may provide too much grip and not enough slip. You may end up blowing your drive faster.

Just a heads up.

chillininnh · 05-18-2010, 12:20 PM

I work in the parts department at Irwin Marine and can tell you exactly which prop the boat was delivered with. A 237 Stryker with a 7.4L Bravo One would have had a 14 3/4"X21P Mirage propeller. I happen to have one here I would be inclined to give you a "deal" on. The Mercury part number is 48-13702A46, let me know if I can be of assistance.

Dave R · 05-19-2010, 05:27 AM

Quote:

Originally Posted by chillininnh

I work in the parts department at Irwin Marine and can tell you exactly which prop the boat was delivered with. A 237 Stryker with a 7.4L Bravo One would have had a 14 3/4"X21P Mirage propeller. I happen to have one here I would be inclined to give you a "deal" on. The Mercury part number is 48-13702A46, let me know if I can be of assistance.

Gotta love the Internet and helpful people like you.

camaro ss · 05-19-2010, 08:33 AM

What's your price?
Is it used?
Is it damaged? Or was it damaged?
Has it been machined and rebalanced?

Let me know thanks.

SIKSUKR · 05-19-2010, 08:56 AM

Quote:

Originally Posted by camaro ss

What's your price?
Is it used?
Is it damaged? Or was it damaged?
Has it been machined and rebalanced?

Let me know thanks.

The final question is "was that my old one"?

camaro ss · 05-19-2010, 09:14 AM

Well you never know. I hope they have a reciept for it or explanation on how and when they recieved it. Be assured that I WILL be able to tell if it was mine.

chillininnh · 05-19-2010, 09:33 AM

Well I guess that's my reward for being "helpful". The prop is actually a Mirage Plus, Mercury part number 48-13705A56. The only difference being that the Plus has the Mercury Prop Ventilation System. It is a new prop that has been installed but never sold nor repaired. As mentioned previously, it not unusual to allow customers to try props before buying, especially stainless steel props. Retail price on this prop is $631.67 and could let this one go for $500. I work at the Irwin's in Lakeport and will be glad to assist you at the counter, we are open 7 days a week til 5:00.

Shawn

Seeker · 05-19-2010, 10:29 AM

chillin, I think your first number is probably the correct one. Doesn't merc use odd numbers in the 5th position to designate LH props?

camaro ss · 05-19-2010, 10:31 AM

$500.00 Seems high for a slightly used Prop.

Thanks for the help. I'll let you know.

Charlie T · 05-19-2010, 11:43 AM

Quote:

Originally Posted by chillininnh

Well I guess that's my reward for being "helpful".
Shawn

NO good deed goes unpunished.

$500.00 for what is essentially a new prop from a dealer with a warranty and the chance to demo it (I assume) sounds fair. Why is it that people look for service and help and after you have provided it they want a price that doesn't allow you enough profit to keep the doors open?

We have a sign in our shop (specialty electronics) "QUALITY, SERVICE, PRICE, PICK ANY 2" We don't have to be the cheapest vendor in the world because we ADD VALUE to everything we sell. Our customers recognize that comes with a price.

chillininnh · 05-19-2010, 03:00 PM

Quote:

Originally Posted by camaro ss

Well you never know. I hope they have a reciept for it or explanation on how and when they recieved it. Be assured that I WILL be able to tell if it was mine.

Statements like this tend to "rattle", good day.

OCDACTIVE · 05-19-2010, 04:26 PM

Quote:

Originally Posted by chillininnh

Statements like this tend to "rattle", good day.

don't let it bother you.... welcome to the forum. Great to have you and your expertise as part of the conversations.

05-15-2010, 07:17 PM	#1
camaro ss Junior Member Join Date: Apr 2009 Location: Amesbury MA Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	Need advice on prop size. Took my boat out of storage and to my surprise my prop was stolen. I'm looking for opinions on size. I had a mercury mirage stainless prop but not sure on the pitch maybe 23"? Any ideas out there? It's 237 powerquest with a 454 carb 300 horse power. Thanks

05-15-2010, 09:55 PM	#2
BroadHopper Senior Member Join Date: Oct 2004 Location: Laconia NH Posts: 5,582 Thanks: 3,224 Thanked 1,106 Times in 796 Posts	Mirage 23" Sounds about right for a 300 HP motor. I think that is standard for the 454. I have a 454 in an F-223 LS. I have a SS Bravo 23" and a SS Bravo 25" available. I am currently happy with a SS Bravo 4 blade. If interested, I will let you try props and I will give you the option to buy. __________________ Someday may never be an actual day.

05-16-2010, 07:56 AM	#3
camaro ss Junior Member Join Date: Apr 2009 Location: Amesbury MA Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	prop size Will they fit on a Bravo 1 outdrive?

05-16-2010, 08:43 AM	#4
BroadHopper Senior Member Join Date: Oct 2004 Location: Laconia NH Posts: 5,582 Thanks: 3,224 Thanked 1,106 Times in 796 Posts	Bravo I All 454s after 1987 have Bravo drives. Yes they fit a Bravo I with standard rotation. __________________ Someday may never be an actual day.

05-16-2010, 09:06 AM	#5
camaro ss Junior Member Join Date: Apr 2009 Location: Amesbury MA Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	prop OK thanks.

05-16-2010, 06:48 PM	#6
Woodsy Senior Member Join Date: May 2004 Location: Weirs Beach Posts: 1,966 Thanks: 80 Thanked 980 Times in 440 Posts	Powerquest should be able to tell you what prop was originally installed.... If not, most marinas will lakeport/irwins etc have spare props you can try out with a deposit... the 23 Mirage sounds about right but the best way is to test... Woodsy __________________ The only way to eliminate ignorant behavior is through education. You can't fix stupid.

05-17-2010, 10:50 AM	#7
OCDACTIVE Senior Member Join Date: Feb 2009 Location: Fort Myers FL / Moultonboro Posts: 1,045 Thanks: 444 Thanked 574 Times in 178 Posts	I would bet the 23 is right... The 25 may be too aggressive of a pitch. I have a 500HP running a 24 (4 blade) I can't imagine you needing more then a 23. Please let us know what you end up with. Check out http://www.offshoreonly.com/forums/prop-talk-165/ If you start a thread there I am sure you will get a lot of good advice on props and tests. Good luck __________________ Have you had your Vessel Inspected Yet?

05-17-2010, 07:43 PM	#8
BroadHopper Senior Member Join Date: Oct 2004 Location: Laconia NH Posts: 5,582 Thanks: 3,224 Thanked 1,106 Times in 796 Posts	What I find on the Formula I bought the Formula with a Michigan SS 21" 3 blade. The motor was on the rev limiter at full throttle. I was able to swap for a 23" Bravo 3 blade. I hit the rev limiter with light loads in the boat. I bought a 25" 3 blade and the boat tend to blow out the prop. It did not hit the rev limiter when it is running right. Later I bought a 24" 4 blade and I am happy. No blowouts even in hard turns. Vibration is a lot less and great holeshots. I was able to save another gallon per hour. Can't find on the INTERNET the difference between Bravo and Mirage props. Someone says the Mirage is a cupped Bravo. My Bravos appeared to be cupped. My Bravo 4 blade appears to be cupped as well. When I get a chance I will attached pictures of the props. __________________ Someday may never be an actual day. Last edited by BroadHopper; 05-19-2010 at 07:11 AM. Reason: spelling

05-18-2010, 12:20 PM	#10
chillininnh Senior Member Join Date: Oct 2009 Posts: 54 Thanks: 8 Thanked 14 Times in 10 Posts	I work in the parts department at Irwin Marine and can tell you exactly which prop the boat was delivered with. A 237 Stryker with a 7.4L Bravo One would have had a 14 3/4"X21P Mirage propeller. I happen to have one here I would be inclined to give you a "deal" on. The Mercury part number is 48-13702A46, let me know if I can be of assistance.

05-19-2010, 08:33 AM	#12
camaro ss Junior Member Join Date: Apr 2009 Location: Amesbury MA Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	Prop What's your price? Is it used? Is it damaged? Or was it damaged? Has it been machined and rebalanced? Let me know thanks.

05-19-2010, 09:14 AM	#14
camaro ss Junior Member Join Date: Apr 2009 Location: Amesbury MA Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	prop Well you never know. I hope they have a reciept for it or explanation on how and when they recieved it. Be assured that I WILL be able to tell if it was mine.

05-19-2010, 09:33 AM	#15
chillininnh Senior Member Join Date: Oct 2009 Posts: 54 Thanks: 8 Thanked 14 Times in 10 Posts	Well I guess that's my reward for being "helpful". The prop is actually a Mirage Plus, Mercury part number 48-13705A56. The only difference being that the Plus has the Mercury Prop Ventilation System. It is a new prop that has been installed but never sold nor repaired. As mentioned previously, it not unusual to allow customers to try props before buying, especially stainless steel props. Retail price on this prop is $631.67 and could let this one go for $500. I work at the Irwin's in Lakeport and will be glad to assist you at the counter, we are open 7 days a week til 5:00. Shawn

The Following 2 Users Say Thank You to chillininnh For This Useful Post:
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05-19-2010, 10:29 AM	#16
Seeker Senior Member Join Date: Nov 2007 Location: Effingham Posts: 408 Thanks: 37 Thanked 19 Times in 15 Posts	chillin, I think your first number is probably the correct one. Doesn't merc use odd numbers in the 5th position to designate LH props?

05-19-2010, 10:31 AM	#17
camaro ss Junior Member Join Date: Apr 2009 Location: Amesbury MA Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	Prop $500.00 Seems high for a slightly used Prop. Thanks for the help. I'll let you know.

The Following 2 Users Say Thank You to OCDACTIVE For This Useful Post:
Irrigation Guy (05-20-2010), LIforrelaxin (05-19-2010)