View Full Version : Motor options/opinions in my 18'....

10-03-2011, 11:58 PM
As most of you know, I just bought my 3rd Donzi, a 1982 2+3 18 with a Mercruiser 260 (350ci)/ Alpha 1 combo.

The hour meter shows 777.2 hrs after my last outing, and I would think it could use a rebuild. I would really like to build a MPI motor, maybe with vortec heads? I don't want to replace the Alpha with a Bravo, or anything like that, but I would like more power then the old 260 puts out.

Anyways, let me know what you guys think


10-04-2011, 12:46 AM
My friend is selling this boat, and said he might be willing to swap me motors since no one seems to be interested in it anyways :


10-04-2011, 01:45 AM
As you stated, unless you plan on changing the Alpha you'd better keep the ponies reasonable.

10-04-2011, 01:49 AM
I agree 100%, that is what my goal is here, to build a motor that will make both myself and the Alpha happy...if that's possible :crossfing:

10-04-2011, 07:24 AM
Do not get all bothered by your Alapha.
I have been pushing 500+ hp through mine for the past 3 years.
As long as you do not hammer it you will be fine.

10-06-2011, 11:35 AM
Is 82 an alpha or pre-alpha? I thought the Alpha debuted in 1985 or so. At 61mph with a cleaver why do you think it needs a rebuild? Ditch the prop first.