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Old     (malibu_23_lsv)      Join Date: Oct 2008       10-23-2008, 10:13 AM Reply   
I use a factory prop on my malibu at an elevation of 4500' (Lake Almanor). I would appriciate comments from users of "altitude" props on ski boats (preferably a malibu 23lsv) and how they affect performance and/or issues related to using non factory supplied props with different dia./pitch...thanks
Old     (rallyart)      Join Date: Nov 2006       10-23-2008, 10:28 AM Reply   
On a typical day you are down almost 20% power at 4500' compared to sea level. Propping with a lower pitch prop is almost essential.
You have a significantly lower top speed already, as a result of your lower HP, so changing the prop really has no affect except you come out of the hole faster.
Old     (05mobiuslsv)      Join Date: Apr 2006       10-23-2008, 11:17 AM Reply   
Call the folks at ACME propellers or OJ Props and they'll tell you exactly what you need in your situation.
Old     (steve_jones)      Join Date: Jun 2006       10-30-2008, 9:46 AM Reply   
Altitude friendly propellers (really just a name) give you more power out of the hole. I live at 5600' and we must reprop the boats we get.

I have had great results with Acme. Call Bill Weeks at Acme (231) 796-2874 or check out their website.

They will ask you the right questions to narrow down a recommendation for your Bu.
Old     (wake1823)      Join Date: Dec 2005       10-30-2008, 10:16 AM Reply   
save $$$, and just re-pitch your stock prop.
Old     (cavlxenvy)      Join Date: Aug 2007       10-30-2008, 10:24 AM Reply   
What motor are you using? Monsoon? If so, I'm sure you are running a 13.5 x 16 right now. You probably max out at 45-46mph. Go to an Acme 1235 (14.25x14.5) and you will likely lose 7-8 mph. You will have a lot of get up out of the hole but watch your red-line. With that prop, you will get there in a hurry and if you red-line your boat to the point where the rev-limiter kicks in for a couple seconds, you throw engine fault codes that the dealer must reset. The immediate solution to that problem is to turn the boat off and restart it. The codes will go to inactive and you will have no problems.
Old     (jcocci)      Join Date: Feb 2006       11-01-2008, 10:36 AM Reply   
We usually run our boat at about 4500 feet. We use the Acme 1235 and it is great. Yes you lose some top end - I try not to take the boat over 40-42 MPH but I can have the boat loaded to the gills and still yank a big slalom skier out of the water with no problem. At higher altitudes the 1235 is the way to go if you are OK with losing the 7-8 MPH top end speed.
Old     (jcocci)      Join Date: Feb 2006       11-01-2008, 10:38 AM Reply   
Sorry - I should have mentioned - I have a 23 LSV with the 8.1.


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