Aq125A Replacement Engines

warlock73

Cadet
Joined
Apr 22, 2009
Messages
25
I have a 1982 Bayliner Capri w/Aq125a and a 270 outdrive. I bought used and am restoreing it. I was wondering if anyone might know how I might go about finding what other engines I can put in it that fit. I would like more HP.
at 4000rpm's I get rattleing in the motor. Instead of a rebuild I would like something bigger. Is there an upgrade website or something that can tell me what will fit or is that wishful thinking. I was told a small block chevy 350 will fit. Any ideas guys. I'm getting ready to store for winter and would like to know so I can start saveing cash now for the spring.
 

TowRoper

Petty Officer 1st Class
Joined
Jul 24, 2009
Messages
302
Re: Aq125A Replacement Engines

dont know what swaps fit but i do know the od gear ratio will have to be changed too
 

PiratePast40

Lieutenant Commander
Joined
Mar 21, 2009
Messages
1,734
Re: Aq125A Replacement Engines

With enough money, you could do anything you wanted :). Realistically, the other AQ series 4 cylinder engines are an easy swap. To go to a V6 or V8, you'll need to change to a "Y pipe" for the exhaust plus you'll need to change the transom shield to one with the appropriate bypass holes. As TowRoper said, you'll need a different lower gear ratio as well. Plus you'll need to add some front motor mounts. There are quite a few threads on the topic and you'll see that most end with the conclusion that it's probably not cost effective - not that it can't be done if you have the parts and money available:D
 

warlock73

Cadet
Joined
Apr 22, 2009
Messages
25
Re: Aq125A Replacement Engines

Well then.....I might as well fix the rattle. I am assumeing its the valves thats makeing the noise, but I'll have a guy check it out in the spring to be sure. Thanks guys.
 

PiratePast40

Lieutenant Commander
Joined
Mar 21, 2009
Messages
1,734
Re: Aq125A Replacement Engines

You might want to start doing the investigation and research during the off season. Come spring, it might be harder to find help.
 
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