L drive to v6outboard

[northvanwatertaxi]

I guy I know wants to modify his 90 bayliner capri. was 90 hp l drive and install a v6 (25'' leg)ouboard<br />if you know this boats set up it's really strange because the transom has a step. if he mounts the outboard on the stern i'm saying he will get cavitaion. <br />I told him I would post it here

 

[imported_LakeRunner]

Re: L drive to v6outboard

Follow these rules below and your friend should have no problem. Most boat motors have a 20" leg. <br /><br />Ventilation and Cavitation<br />Ventilation occurs when surface air or exhaust gases are drawn into the propeller blades. The load on the propeller is reduced by the mixing of air or exhaust into the water steam causing over revving.<br /><br />Anti-ventilation Plate: Large plate cast into gearcase housing directly above propeller. Helps reduce surface air from being pulled into blades.<br /><br />Cavitation: The aeration (bubbling) and boiling effect of water caused by creation of a low pressure area. Generally caused by a solid shape (propeller blade) passing through the water, in such a position and speed, that a low pressure area is formed due to the inability to move through the water in nonresistant manner. An example is, a propeller blade that has a rough edge would not cut efficiently through the water, thus creating a low pressure area. If the pressure drops below the vapor pressure, a cavitation bubble will form in that region. These bubbles will collapse when they reach the higher pressure region of the blade. This causes a rapid change in pressure and can result in physical erosion. You may notice burns (erosion) at some area on the face of the blade.<br /><br />Common rules of thumb:<br /><br />Ventilation can lead to excessive slippage. <br />Cavitation can lead to ventilation and/or slipping.

 

[JB]

Re: L drive to v6outboard

Cavitation also erodes the surface on which it occurs. . . even stainless steel.<br /><br />I think this belongs in the Boat Restoration and Building Forum. Gonna move it there.

 

[Realgun]

Re: L drive to v6outboard

Depending on the boat that V6 might be too much.<br /><br />The 17 foot Capri is rated at 90 max as stated on the sticker. However acording to the backyard builder rule the Max is 120.<br /><br />To big a motors gonna wreck the ride and handling on that boat IMHO and could be potentially dangerous.<br /><br />Your friend had better think about how hes gonna beef up that traanson to handle a 120Hp motor.

 

[northvanwatertaxi]

Re: L drive to v6outboard

I'm sure the v6 is not legal here either. I told him that putting that big motor so far back on the transom would draw air into the prop because on the "L Drive" there is a notch on the stern. is not made to hang a motor. <br />Because of that notch i'm assuming that at certain speeds the prop would be subject to cavitation.<br />Admiral Realgun,<br />I read your webpage and it reminded me of the restoration of my 23' bayliner. I gutted the whole interior and installed a new mahogany floor and trim ,bought a used motor and sterndrive I did all the work myself and have been on long trips up the coast about 300 miles my boat has acdc tv vcr stereo acdc fridge makes ice (for the rye and coke) bbq, stove, engine or 110v hot and cold pressure water, head, and a shower on the swimgrid <br />i have towed wake boarders too I took some photos<br />They are on this webpage <br />Thanks for your website and enjoy your boat

 

[northvanwatertaxi]

Re: L drive to v6outboard

I'm sure the v6 is not legal here either. I told him that putting that big motor so far back on the transom would draw air into the prop because on the "L Drive" there is a notch on the stern. is not made to hang a motor. <br />Because of that notch i'm assuming that at certain speeds the prop would be subject to cavitation.<br />Admiral Realgun,<br />I read your webpage and it reminded me of the restoration of my 23' bayliner. I gutted the whole interior and installed a new mahogany floor and trim ,bought a used motor and sterndrive I did all the work myself and have been on long trips up the coast about 300 miles my boat has acdc tv vcr stereo acdc fridge makes ice (for the rye and coke) bbq, stove, engine or 110v hot and cold pressure water, head, and a shower on the swimgrid <br />i have towed wake boarders too I took some photos<br />They are on this webpage <br />Thanks for your website and enjoy your boat

 

[Realgun]

Re: L drive to v6outboard

northvanwatertaxi I don't think it will draw air but it will weigh the rear of that boat down. Also the hull was not designed for an outboard he will need to reinforce it.<br /><br />I wanna see your boat! Sounds cool however I prefer Pepsi and tequilla. I know I am wierd.

 

[Purduebarry]

Re: L drive to v6outboard

North...you got all that on a 23', WOW...where are the pics? Sounds like quite the rig.

 

[northvanwatertaxi]

Re: L drive to v6outboard

above my post there is a homepage button,<br />Pepsi and tequilla? ok have to try that sometime.

 

[tashasdaddy]

Re: L drive to v6outboard

beautiful screnery, great husky.

 

[northvanwatertaxi]

Re: L drive to v6outboard

yes siberians do rule, That's Bandit