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  #1  
Old 11-05-2017, 09:39 AM
Strreamline Strreamline is offline
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Boat: 1988 Mastercraft Platinum Prostar 190
Location: Canada
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End of season prop damage :-(

Just went for a short run to warm up the engine and transmission oil before replacement and found a stick. Heavy vibration and no power, big dent in my prop :-(

Trying to figure out what prop I have...and what I should replace it with.

1989 Prostar 190, 351w engine with velvet drive 1:1 transmission. Mostly a skier/footer but sometimes surf or board too.

These are the markings found on my current prop.
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  #2  
Old 11-05-2017, 10:23 AM
tommurtha tommurtha is offline
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looks like a 13 X 13 cup..standard prop for a MC
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  #3  
Old 11-05-2017, 10:32 AM
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Miss Rita Miss Rita is offline
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Boat: 1992 ProStar 205, 1991 Ski Pro
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time to upgrade to a CNC prop. The Acme 541 is very popular, although I run the slightly lower pitch 543 on my '92 with same basic powertrain that you have. I love mine, the holeshot is great.

OJ props will have a similar product.
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  #4  
Old 11-05-2017, 12:24 PM
waterlogged882 waterlogged882 is offline
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That looks like an old (OEM - 87) OJ prop.

Not 100% certain but few options to deduce from.
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  #5  
Old 11-05-2017, 12:50 PM
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mikeg205 mikeg205 is offline
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Boat: 1995 Pro Star 205 5.7 Liter
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Talk to Oj, Acem and Michigan wheel - 13x13 was oem - 13x12 gives more rpm

lot of good reviews on the 541 cnc - 13x12 plus the 12 pitch will give you some nice oomph and high end.

how bent is your prop? it might be fixable - oj may fix yours for a backup and sell you a new one shipping over the border can get pricey tho'.
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  #6  
Old 11-07-2017, 08:19 AM
Strreamline Strreamline is offline
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Boat: 1988 Mastercraft Platinum Prostar 190
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Okay thanks guys. I'll keep an eye out for a 13x12. Our shaft size is 1" right? I'm certain mine isn't so far gone that it can't be repaired. Might be a good time to get my shaft checked, change my cutlass bearing and drip seal and re-aligning everything. I don't have a ton of faith in the mechanical knowledge for the technician that the previous owner used...motor was timed at 0deg TDC......
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  #7  
Old 11-07-2017, 08:59 AM
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Fullpass Fullpass is offline
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I have a Brand New, never installed OJ Legend 13 x13 4 blade prop with a keyed 1 1/8 shaft, could check yours to see if it is 1 or 1 1/8.
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Old 11-08-2017, 07:56 AM
Strreamline Strreamline is offline
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Boat: 1988 Mastercraft Platinum Prostar 190
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Mine is 1". This prop is out for repair now, about $100. I have a Acme 13x12 at home with a 1-1/8" keyed shaft...wish I could use that. Looking into the anchor bushings to reduce the bore but at the price with shipping might just be worth it to bite the bullet for my new prop.
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  #9  
Old 11-08-2017, 02:54 PM
Strreamline Strreamline is offline
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Boat: 1988 Mastercraft Platinum Prostar 190
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Ugh...drive shaft seems straight...sending it out for inspection shortly. Strut is definitely bent tho. not even close to lined up properly. good time of year for this I guess...
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  #10  
Old 11-08-2017, 04:01 PM
curver900 curver900 is offline
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Quote:
Originally Posted by Strreamline View Post
Mine is 1". This prop is out for repair now, about $100. I have a Acme 13x12 at home with a 1-1/8" keyed shaft...wish I could use that. Looking into the anchor bushings to reduce the bore but at the price with shipping might just be worth it to bite the bullet for my new prop.
if you would have gotten a new OJ prop from OJ they would have fixed your old one for free
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