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Thread: Unknown Outdrive!
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06-07-2017, 07:56 PM #1New Member
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Unknown Outdrive!
From what I know this boat is a 21' Stallion and had a BBC in it. The prop is a "stiletto" and looks like a surface piercing of some sort. It has an actual prop shaft on the lower unit and looks nothing like any alpha or bravo I have ever seen. I'm building a motor for it and am curious what this drive can is and can handle. Any help is appreciated!
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06-07-2017, 08:29 PM #2
Kinda looks like an old speedmaster
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06-08-2017, 07:16 AM #3
Sternpower
2005 APR FORMULA 2 ROOKIE OF THE YEAR
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06-08-2017, 09:40 AM #4
http://www.sternpowr.com/
It looks like their model 107
http://www.sternpowr.com/pdf/100serieshires.pdfMark
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06-08-2017, 10:24 AM #5
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06-08-2017, 12:16 PM #6
I don't know anything about them but they been around along time and I've seen them with some pretty big hp
Last edited by largecar91; 06-08-2017 at 07:47 PM.
2005 APR FORMULA 2 ROOKIE OF THE YEAR
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06-08-2017, 12:25 PM #7
love the prop thrust gauge on page 132
that's not something you see anymore<> God is great , Beer is good , Boaters are crazy <>
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06-18-2017, 08:46 PM #8
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07-10-2017, 11:18 AM #9Junior Member
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Sternpowr I reasearched them before i bought my current boat that has one on it.
I know of people which have put 1200 hp thru them with no problems.
And many are running 600-900.
Of course a lot depends upon how well its taken care of.
And if there are any internal problems already.
Rust on bearings pitting etc.
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07-11-2017, 08:30 PM #10
Cool boat how fast what power
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07-22-2017, 07:30 AM #11
What is dimension of crank centerline to propshaft ???
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07-23-2017, 02:13 AM #12New Member
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Ster powr
I have had 1 of these outdrive since 2002 on my 79 Eliminator mini daycruiser 454BBC 72c velvet drive. Current set up is with a 105 but I have a 107 I'm putting in it this winter. With a blown 468. Previous set up with 105 ran 80 mph but my drive is to low in the water prop shaft is 6" below bottom and I have the shortest drive they made so am changing X dimension this winter also. My OD guy says I should pick about 10 mph from that!!!
these drives are faster with higher X dimensions, the hydrodynamics on these lower units are really bad. Mine has been highly modified and does not look nothing like urs or a stock lower???
good gears are VERY hard to find these days. New factory gears are JUNK!!! All ready went threw a upper and lower set with no real big power!!! Old 1s were made by Richmond gear and are the best to get if u can find them. GOLD!!!!!!
U probably have the good
if it haven't been rebuilt lately!!!! Make sure it always has oil in it!!!! And u should have it check out before u put some serious power in front of it. U don't want to hurt it!!!
i can set u up with the guy he's in OHIO I think. Very good dude!!!
do u know what gears are in it???
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07-24-2017, 02:22 PM #13Junior Member
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08-08-2021, 01:33 AM #14New Member
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