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Thread: 4 blade equivalent to 3 blade
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06-13-2006, 11:45 AM #1
4 blade equivalent to 3 blade
Hi
I have a 1998 Mobius with the Indmar 5.7 315 HP carburated engine and my original propeller its a 13x13 3 blade nibral prop, and it works fine for me, but I want to buy a spare and I wonder what would be the 4 blade equivalent to my actual propeller? a 13X11 will work, will I get more holeshot of top speed with it?
Thanks
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06-13-2006, 02:28 PM #2Senior Member
- Join Date
- Mar 2006
- Location
- Chapin, SC
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Replying to Topic '4 blade equivalent to 3 blade'
Rosh:
Im not sure about all the answers to your prop question. Certainly someone here will be able to help; however, I would definately recommend that you call Vince at Discount Inboard Marine. 803-345-0996 or www.skidim.com
I ski with Vince and frequent SKIDIM they have a wall of props in stock and he can certainly look up your boat info to get you the right options for a 4 blade equivalent. I have an Outback '04 with the Indmar 5.7 and it has the 4 blade 13 x 13 with the 1" key hole slot. I am pretty sure that my transmission is the 1:1 ratio. Eitherway, when you are ready to purchase I would definately call Vince. Good Luck
SeanI mess with Texas
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06-13-2006, 08:06 PM #3
Replying to Topic '4 blade equivalent to 3 blade'
Are you sure you have the stock propeller? My 99 Mobius with 5.7L carb came with a 4 blade OJ Legend, 13x13. I went to Acme and they had a 3 blade, like a 13x11 I think, that they recommended. Bottom line with them is you tell them your boat/motor and they will tell you which of their props to use.
Everyone raves about Acme so I bought one. Not sure I notice the difference, but at least it is no worse.
DaveIf you believe something to be true, it will be - in it's consequences.
2009 MasterCraft ProStar 197 - DD - 5.7L - 325HP - Zero Off
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07-06-2006, 03:11 AM #4
Replying to Topic '4 blade equivalent to 3 blade'
If you havnt purchased a prop yet - check out Borditup.com Karl owns the business and knows more than he should about props!
http://www.boarditup.com
he also has the most affordable prices I found anywhere!
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07-06-2006, 06:03 AM #5Banned
- Join Date
- Oct 2005
- Location
- Durham, NC
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- 649
Replying to Topic '4 blade equivalent to 3 blade'
Yea, I would call the prop manufacturer. I replaced my 3 blade w/ a 4 blade recently because I trashed my original one on an unmarked shoal. Since OJ supplied the original one, I just called them and had a tech guy give me his recommendations. The size will also depend on the type of prop. I had a cast 13x13 3-blade, and I think I ended up with a cast 13x13 4 blade. However, if you get a CNC cut prop (which are really nice but cost a bit more) the size is different, like a 12.5x11.5 or something like that. So I would definitely call them. Also, they say that a 4 blade has less driveline vibration that a 3 blade, which is always nice.
-Brian
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07-06-2006, 08:15 AM #6Senior Member
- Join Date
- Feb 2006
- Location
- Fayetteville, GA
- Posts
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Replying to Topic '4 blade equivalent to 3 blade'
Originally posted by nboard10
If you havnt purchased a prop yet - check out Borditup.com Karl owns the business and knows more than he should about props!
http://www.boarditup.com
he also has the most affordable prices I found anywhere!
Where do you know Karl from?
(Karl's a good guy)
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