change out drive from omc to merc

[dhfarmboy1066]

I would like to change my out drive on a 2550 pursuit from a omc cobra to mercury . will i need to total redo the transom and re cut the hole or will they inter change thanks Doug

 

[180shabah]

Re: change out drive from omc to merc

Cobras use the same cutout as an alpha. Bravos and gen2s will only need to have two additional bolt holes drilled.

 

[HT32BSX115]

Re: change out drive from omc to merc

Howdy,

I removed an 87 OMC 460 King Cobra from my 87 211 Liberator and replaced it with a 97 454 Bravo III.

As indicated, I only needed to drill 2 additional holes for the 2 additional studs in the Bravo transom.

You might want to inspect your transom for water intrusion (and possible rot) and you 'll probably need to fill the side engine mount holes with epoxy/glass mix and redrill them for the new engine but that's about as complicated as it gets.


Cheers,


Rick

 

[LassePelle]

Re: change out drive from omc to merc

Are you thinking of changing the engine and leg? if the engine is ok you could buy a conversion kit from sei and the any merc alpha 1 gen 2 will fit.

I did the conversion and it took me about 5 hours and works great

www.sterndrive.cc i think is the right place to look for the kit.

 

[MacPointMan]

Re: change out drive from omc to merc

This is good to know. Thanks for asking the question as I had the same one. The boat I am looking at is an 89 Bayliner Capri 1900 with a Mercruiser 3.0 130 hp motor and a OMC Cobra outdrive. Hopefully the transom checks out on her. Currently the owner has her in the shop getting a new starter installed and having them do a good mechanical once over on her.

If I buy this boat and in the event the drive fails on me I had the idea of upgrading it to a Merc.

The other question is what is the translation from the Merc 3.0 to I believe that is a Ford block. I understand that it is possible to use a regular auto motor with your recycled or new Marine accessories bolted on. Again this is just to file into that knowledge bank If and when the time comes to replace the motor and outdrive.

Should I have to change a motor I think I would go with a Vortec 4.3 motor with the Merc outdrive. I understand people get great results with that combo with both power and fuel economy.

MacPointMan