Benefits of an Ext Box ?
11-22-2009 | 08:40 PM
#81
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From: Millstadt, IL
I dropped the boat off Thursday to have the ext box and steering installed. I am hope for some benefit from this upgrade. I am putting the Stelling box on at the highest "X" dim setting. That alone should raise the X by almost 2". At that point I will hold off on getting the IMCO shorty until I can get some testing done. Also, I have been tempted with a 500EFI for $12,500 shipped but just cant seem to justify it yet. On a side note, has anyone installed the new E-tops for the 496 yet? I have been back and forth so many times on this and still have not made a decision. My only goal is to keep getting a few hundred RPM's here or there to spin a taller prop to gain that extra few MPH to hit 70. I know I am wishing for alot but still, it's a wish.
11-23-2009 | 12:03 PM
#82
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From: USA
No, it is on the x-dimension so it would be a vertical movement with no addition of subtraction for setback.
11-23-2009 | 04:40 PM
#83
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From: Michigan
Currently prop is 6.5". Not sure where I want to end up, will start with this. If it needs to go higher, a 2" IMCO shorty will be next. I have heard from other 25OL owners and have great sucess with with anything between 4 3/4 and 2 3/4. The owner I bought the box from had it on a 25 OL with the shorty for a "X" dim of 2 3/4". No issues at all with getting on plane with a labbed 24P B1.
11-23-2009 | 07:11 PM
#84
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From: Pgh. Pa.
Yes, 70 is my mark. I hope to be close with ext box and labbed prop. This is also the start for bigger power down the line. Hydro steering is a must si I thought I mights as well do a box with it. I hope to either go 500 EFI or Raylar in the next few years. If I could get $8500 for my >100hr 496 HO I would get the 500 EFI this year.
It wasnt any one thing I did it was many I do love the challenge RPM in a Baja dont allways = speed there are reasons why Bajas are slow I know many baja guys that added lots of HP with small gains ,added shortys to spin bigger props all they did was trade rpms to spin bigger wheels been there done You start with the slip! I remember I fixed one spot on the bottom and I picked up 4% efficiecy My slip factor is 11.5% and 9% with 6 blade 29 herrings unheard of on a Baja, find the deficiency so your boat will appreciate the thousands of dollars you willing to spend and do one thing at a time so you know what works and what dont .There was many of thing I had to undo
11-23-2009 | 07:39 PM
#86
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From: Pgh. Pa.
Y ou need a floor jack and two jack stands put the floor jack under the toung chalk your wheels ,lower the toung to the ground the back of boat will be up in the air put the jackstand with blocks as needed under the outside corners under the flat spots at the transom then raise the toung slow this should raise the back of the boat off the trailer safely enough to look at the haul .Put a light in the front of the boat and look down the glare take some pictures of the bottom of that glare the shadows are the problem I bet youll be suprised Hope this helps the strait edge helps to
11-24-2009 | 06:33 AM
#88
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From: Michigan
11-25-2009 | 05:46 PM
#89
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From: Pgh. Pa.
12-19-2009 | 10:05 PM
#90
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Joined: Aug 2006
Posts: 358
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From: Statesville, NC
bring me your boat before you waste your money Ill show whats wrong for nothing I can in most cases get you 150-200 rpms out of 496ho just a few changes CRAYOLA CRAZY did 71mph when I took delivery of it The last time out she did 99.8
It wasnt any one thing I did it was many I do love the challenge RPM in a Baja dont allways = speed there are reasons why Bajas are slow I know many baja guys that added lots of HP with small gains ,added shortys to spin bigger props all they did was trade rpms to spin bigger wheels been there done You start with the slip! I remember I fixed one spot on the bottom and I picked up 4% efficiecy My slip factor is 11.5% and 9% with 6 blade 29 herrings unheard of on a Baja, find the deficiency so your boat will appreciate the thousands of dollars you willing to spend and do one thing at a time so you know what works and what dont .There was many of thing I had to undo
It wasnt any one thing I did it was many I do love the challenge RPM in a Baja dont allways = speed there are reasons why Bajas are slow I know many baja guys that added lots of HP with small gains ,added shortys to spin bigger props all they did was trade rpms to spin bigger wheels been there done You start with the slip! I remember I fixed one spot on the bottom and I picked up 4% efficiecy My slip factor is 11.5% and 9% with 6 blade 29 herrings unheard of on a Baja, find the deficiency so your boat will appreciate the thousands of dollars you willing to spend and do one thing at a time so you know what works and what dont .There was many of thing I had to undo
