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Old 02-08-2008, 02:05 PM
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kevfischer kevfischer is offline
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Boat: 2006 Mastercraft XStar, MCX 350 engine
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Prop Questions

I am trading my X2 in for an Xstar (Attached Pic). I am going to have to purchase a new Prop to handle the 2 front and 2 rear fly high ballast system plumbed into the factory. Any one know what the correct size is that I need. I have been told 14.25 x 14 and 14.25 x 14.5. If anyone can explain this to me it would be much appreciated.
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  #2  
Old 02-08-2008, 02:10 PM
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Talk to MYMC (Mike at MC of Charlotte). He has done lots of experimentation with props on the X Star. Shoot him a PM.
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  #3  
Old 02-08-2008, 02:12 PM
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endl endl is offline
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Quote:
Originally Posted by kevfischer
I am trading my X2 in for an Xstar (Attached Pic). I am going to have to purchase a new Prop to handle the 2 front and 2 rear fly high ballast system plumbed into the factory. Any one know what the correct size is that I need. I have been told 14.25 x 14 and 14.25 x 14.5. If anyone can explain this to me it would be much appreciated.
You should be right on the money. I just bought a Acme 1285 which is the 14.5 X 14.25 .105 cup. It is the prop rated to push 2000 lbs over stock ballast. They have a brand new prop out model 1479 which is also 14.5 x 14.25 but has a .150. They claim it will perform better on the top end as well as hole shot and holding corners. The 1479 is 619.00 retail. I opted to just go with the 1285 since many people have bought them and liked them. Also I grabbed mine right before the price increases.
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  #4  
Old 02-08-2008, 02:54 PM
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Ole Miss Rebels Ole Miss Rebels is offline
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i ordered the 14.25 X 14 oj Edge for my 05 xstar w/ mcx. it turned my boat into a stump puller. my boat originally had the 13.7 X 17.5. my rpm's went up from 3100 to 3300 at 21.5 mph. fuel consumption is currently with 14 pitch at 5.3 gph with stock ballast only. i did lose about 3-4 mph top end but i didn't care. it is a smooth prop that really holds speed perfectly and locks the perfect pass down rock solid. if their is a better prop for an mcx powered xstar i would be amazed.
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  #5  
Old 02-08-2008, 02:57 PM
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Ole Miss Rebels Ole Miss Rebels is offline
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sorry,i forgot to ask which engine your xstar will have in it. that will make a big difference. also, my oj 14.25 X 14 had a 110 cup.
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Old 02-08-2008, 03:01 PM
TMCNo1 TMCNo1 is offline
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Talk to Eric @ OJ Props @ 1-800-359-9730, he'll work with you on it too!
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  #7  
Old 02-08-2008, 03:04 PM
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ttu ttu is offline
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why not just have marine world swap the prop out.

pretty sure it is the 14.25 X 14.5
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  #8  
Old 02-08-2008, 03:20 PM
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endl endl is offline
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Here are the Acme splined sizes available.

979 12.50 12.625 .050 cup 3 Spline LH
1221 13.00 10.50 .060 cup 3 Spline LH
901 13.00 11.50 .040 cup 3 Spline LH
843 13.00 12.00 .080 cup 3 Spline LH
841 13.00 12.50 .080 cup 4 Spline LH
1573 13.00 12.625 .080 cup 3 Spline LH
1171 13.00 13.00 .080 cup 3 Spline LH
1253 13.00 14.00 .135 cup 3 Spline LH
1281 13.25 15.00 .090 cup 3 Spline LH
977 13.25 15.50 .060 cup 4 Spline LH
1279 13.50 15.00 .105 cup 3 Spline LH
845 13.50 16.00 .105 cup 4 Spline LH
1567 13.50 16.00 .150 cup 4 Spline LH
847 13.50 17.50 .105 cup 4 Spline LH
1569 13.50 17.50 .150 cup 4 Spline LH
1561 13.50 19.00 .105 cup 4 Spline LH
1039 13.50 19.50 .105 cup 4 Spline LH
849 14.00 20.00 .130 cup 4 Spline LH
1575 14.00 20.00 .180 cup 4 Spline LH
1625 14.5 13.75 .075 cup 4 Spline LH
1285 14.50 14.25 .105cup 4 Spline LH
1479 14.50 14.25 .150 cup 4 Spline LH
1593 14.50 16.00 .135 cup 4 Spline LH
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  #9  
Old 02-09-2008, 03:41 PM
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Jerseydave Jerseydave is offline
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Quote:
Originally Posted by kevfischer
I am trading my X2 in for an Xstar (Attached Pic). I am going to have to purchase a new Prop to handle the 2 front and 2 rear fly high ballast system plumbed into the factory. Any one know what the correct size is that I need. I have been told 14.25 x 14 and 14.25 x 14.5. If anyone can explain this to me it would be much appreciated.
Since you're running alot of ballast, the 14.25 X 14 would be the better choice. That's the prop all the X-stars are coming with I think.

I'm getting the 14.25 X 14.5 for my MCX X-star because I am running 1500 lbs. over stock ballast and I want a few less RPM's. Zane tested the x-star with this prop in Wakeboarding magazine Feb. 2007 page 106-107. Here's the results:

Factory ballast only.......7.0 seconds to 22 mph.......3,300 rpms
Fully loaded (???).........11.0 seconds to 22 mph......3,500 rpms

The article doesn't say what "fully loaded" is, but I assume with Zane it must be 3,000-4,000 lbs. of total ballast. It also doesn't say what engine Zane has. Talk to Eric @ OJ props for your specific application.

Hope this helps.

Dave W
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  #10  
Old 02-21-2008, 06:34 PM
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kevfischer kevfischer is offline
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Join Date: Dec 2005
Boat: 2006 Mastercraft XStar, MCX 350 engine
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thanks everyone!
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