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Topic Review (Newest First)

  • 08-12-2013, 04:30 PM
    topspeed02
    Tmoore Thanks for the quick reply and great answer! Can anyone else confirm this 100%?
  • 08-12-2013, 06:19 AM
    tmoore
    Quote Originally Posted by topspeed02 View Post
    Ok guys I have read through every page in this thread and see the link to match the motor to Bravo drive but what parts are needed to mate to Alpha 1 drive? Any help would be awesome.... Thanks
    I'm about 99% sure the same parts that connect to a bravo connect to an alpha... I'm pretty sure it's the same input shaft, bellhousing and all.
    The alphas have a water pump in the drive so you won't need an engine mounted sea water pump.
  • 08-11-2013, 08:30 PM
    topspeed02
    Ok guys I have read through every page in this thread and see the link to match the motor to Bravo drive but what parts are needed to mate to Alpha 1 drive? Any help would be awesome.... Thanks
  • 07-23-2013, 06:21 AM
    tmoore
    Quote Originally Posted by FormulaZR View Post
    Yeah, I still can't jump ship to the 300xs just yet. Great powerplant...but just not my style.


    I think the Blackhawk would be cool. I'm a little unsure with the feedback I've heard about getting on plane; and the lack of props available. But maybe...

    Glad to hear you're coming to Tawak! Hope to see ya there...maybe I can go for a ride.
    I'd have a hard time putting 300xs's on the back of my boat even if I could afford them... When something goes wrong they would be a PITA to fix. With the LSs or any automotive based engine you can go to pretty much any parts store and get up and going again.

    I don't think it would be nearly as bad as you think getting on plane... It's not going to be like a jet, but I don't think it would be bad.
    The prop situation is pretty bad... but from what I understand Bravo 3 props are the same or can be modified to work. I've seen some of those in 28 pitch. If you had a 1.36 geared Blackhawk depending on how high you spin your motor it could be some good speed... maybe around 110 mph at 6000 rpm

    You are more than welcome to come for a ride... it may be like riding in a tug boat depending on what I get on it for a prop.
  • 07-22-2013, 09:03 PM
    FormulaZR
    Quote Originally Posted by BigSteve View Post
    That is a good hull
    It can be powered many ways
    each having advantages jet,v drive . i/o , single or twin o/b

    I think you would like the ride of a well set up 300xs , excellent fuel mileage,
    more room in the boat and storage space

    I enjoy the driving benefits and performance offerings a I/O brings to the table.
    I think you will too
    Yeah, I still can't jump ship to the 300xs just yet. Great powerplant...but just not my style. BUT, even though I hate the sound and look; I do like the performance...so maybe I need to change my style.

    However, my boat would be "easily" converted to I/O...so I might bark up that tree first. We'll see.


    Quote Originally Posted by tmoore View Post
    I want in on the cyber bench racing...
    My boat is the fastest twin LS powered 24 Skater in the world!!! Prove me wrong.

    Formula - I think the blackhawk would be bad ass on that thing, that's what I would do.
    I'm planning on coming out to Tawakoni this weekend. I put a propshaft in it over the weekend now I'm working on a prop.
    Worst case I'll throw a stupid round ear prop off a friends Baja on it to run around about 50mph. At least it will still be the fastest twin LS powered 24 Skater in the world!!!
    Ha ha...good logic. I guess I have the fastest LS powered Liberator, also. It's good to be the king! Ha ha.

    I think the Blackhawk would be cool. I'm a little unsure with the feedback I've heard about getting on plane; and the lack of props available. But maybe...

    Glad to hear you're coming to Tawak! Hope to see ya there...maybe I can go for a ride.
  • 07-22-2013, 06:34 PM
    Budweiser
    Quote Originally Posted by tmoore View Post
    The propshaft breaking was more than likely driver error... not that I would ever do anything wrong.
    I quartered some big cruiser wake WOT and never let off any. I've got the drives set pretty high with the propshafts 1 1/2" above the bottom, and I think the momentary freespin - grab - freespin - grab - freespin - grab just took it's toll.
    I've known I need to upgrade to the 1 1/4" propshafts but that money thing keeps getting in the way.

    Besides, who would think a junkard 5.3 would make enough power to break a bravo drive.
    That'll do it. It's NICE to hear that you drive it like ya stole it though Hard to beat a Skater through the rough stuff.
  • 07-22-2013, 11:33 AM
    tmoore
    The propshaft breaking was more than likely driver error... not that I would ever do anything wrong.
    I quartered some big cruiser wake WOT and never let off any. I've got the drives set pretty high with the propshafts 1 1/2" above the bottom, and I think the momentary freespin - grab - freespin - grab - freespin - grab just took it's toll.
    I've known I need to upgrade to the 1 1/4" propshafts but that money thing keeps getting in the way.

    Besides, who would think a junkard 5.3 would make enough power to break a bravo drive.
  • 07-22-2013, 11:22 AM
    tmoore
    I want in on the cyber bench racing...
    My boat is the fastest twin LS powered 24 Skater in the world!!! Prove me wrong.

    Formula - I think the blackhawk would be bad ass on that thing, that's what I would do.
    I'm planning on coming out to Tawakoni this weekend. I put a propshaft in it over the weekend now I'm working on a prop.
    Worst case I'll throw a stupid round ear prop off a friends Baja on it to run around about 50mph. At least it will still be the fastest twin LS powered 24 Skater in the world!!!
  • 07-21-2013, 07:05 PM
    BigSteve
    Quote Originally Posted by FormulaZR View Post
    Funny you mention that. I had also REALLY considered a 300XS powered 21' Liberator. My holdup is that my current boat would require MAJOR surgery...and the engine is $17k (or more?). The XR conversion will be much, much cheaper since I already have an engine. The other thing for me is, I would love the quietness of a 300xs, plus 96-102 top speed and the ability to cruise 55 mph with minimal fuel burn. BUT - I still can't get over how they look. I just don't like the way a big 300xs looks on the back of a small boat. Painting the cowling to match helps...but it's still not what I like. With the XR, it's almost like the best of both worlds between jet and OB (minus the acceleration and near bulletproof drive) - I get the higher top speed on less hp, better cruise, and keep the V8.

    However, I've never, ever driven a boat with a prop; so I'm hoping I can get a couple minutes behind the wheel of an OB and I/O before I commit to the swap.
    That is a good hull
    It can be powered many ways
    each having advantages jet,v drive . i/o , single or twin o/b

    I think you would like the ride of a well set up 300xs , excellent fuel mileage,
    more room in the boat and storage space

    I enjoy the driving benefits and performance offerings a I/O brings to the table.
    I think you will too
  • 07-21-2013, 10:53 AM
    FormulaZR
    Funny you mention that. I had also REALLY considered a 300XS powered 21' Liberator. My holdup is that my current boat would require MAJOR surgery...and the engine is $17k (or more?). The XR conversion will be much, much cheaper since I already have an engine. The other thing for me is, I would love the quietness of a 300xs, plus 96-102 top speed and the ability to cruise 55 mph with minimal fuel burn. BUT - I still can't get over how they look. I just don't like the way a big 300xs looks on the back of a small boat. Painting the cowling to match helps...but it's still not what I like. With the XR, it's almost like the best of both worlds between jet and OB (minus the acceleration and near bulletproof drive) - I get the higher top speed on less hp, better cruise, and keep the V8.

    However, I've never, ever driven a boat with a prop; so I'm hoping I can get a couple minutes behind the wheel of an OB and I/O before I commit to the swap.
  • 07-21-2013, 10:23 AM
    BigSteve
    Quote Originally Posted by FormulaZR View Post
    Not taking anything away from Randy...but I'm only a couple hours from Dave. I have talked to Dave several times about this conversion...the only hold up now is my wishy-washy self - and buying a Bravo (and I'd really prefer an XR).



    Correct, my transom would have to be beefed up. I am thinking with a -2 lower, it will be the correct height. I don't know if you can get shorter than a -2, but if you can that's what I'll do; and just use spacers if it's too short.

    I also wanted a Blackhawk...but have read quite a bit that they take forever to get on plane. But...once it's converted to a Bravo, it wouldn't be *that* much of a PITA to have a Blackhawk for special circumstances.
    We have worked with both of them at the Outboard Church

    We have rigged a couple with 300xs
    and a 21 Daytona. All of them run 100 plus, stock and backed by Mercury Racing

    The I/0 set ups i have seen running 21 daytonas are quite impressive
    Talk with "Phill"s Propellers" @ lake Shasta he has one and owns a prop shop

    Winspeed rolls with the Church he has a 21 Daytona I/O kiss ass ride

    And Dean at the local speed shop is running a 680 inch torque monster

    They can get a I/O in the 125 mph range with control

    I have a 21 Cougar with a 2.5 Merc 114 mph, I going to swap out for a 300xs
    for a more over all performance and skip the high winding blitzing for a few mph
  • 07-21-2013, 09:55 AM
    FormulaZR
    Quote Originally Posted by BigSteve View Post
    Talk with Randy "Wildman" He custom rigs these boats.

    Randy has years of experience and real world facts and data

    Good luck with your project
    Not taking anything away from Randy...but I'm only a couple hours from Dave. I have talked to Dave several times about this conversion...the only hold up now is my wishy-washy self - and buying a Bravo (and I'd really prefer an XR).

    Quote Originally Posted by Jspeeddemon View Post
    Jetboats push from the bottom, not the transom, most transoms in I/O applications are over an inch thick. Plus the Bravo would be extremely deep in water below boat.
    Correct, my transom would have to be beefed up. I am thinking with a -2 lower, it will be the correct height. I don't know if you can get shorter than a -2, but if you can that's what I'll do; and just use spacers if it's too short.

    I also wanted a Blackhawk...but have read quite a bit that they take forever to get on plane. But...once it's converted to a Bravo, it wouldn't be *that* much of a PITA to have a Blackhawk for special circumstances.
  • 07-21-2013, 08:05 AM
    Jspeeddemon
    Jetboats push from the bottom, not the transom, most transoms in I/O applications are over an inch thick. Plus the Bravo would be extremely deep in water below boat.
  • 07-21-2013, 07:08 AM
    BigSteve
    Quote Originally Posted by FormulaZR View Post
    ^^ I have a well built pump currently, and the boat runs great overall for what it is.

    But, it's starting to seem like I don't need or use the great holeshot acceleration; and would prefer to have a better cruise. We'll see. I still have to find an XR before I get too serious about this.
    Talk with Randy "Wildman" He custom rigs these boats.

    Randy has years of experience and real world facts and data

    Good luck with your project
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