Fun While It Lasted

You’ll need to rod out all the oil galleys in the block if you intend on using the block that had the rods go astray. Also, check the lower cylinder bores for missing chunks. The timing cover is likely shot too. Check the inner bores where the oil pump gears live. I suspect a lot of metal was trying to circulate in the oiling system.
-Donny

 

Those radios solve a lot of issues. I took mine out and there is soo much noise.
I won't lie I'm on my 3rd motor. Started with a 2.2L then a 3.3L now a 4.3 bored 0.020 over into 4.4L

 

Never seen a marine version of the 225, but my first wife's uncle once installed a small block engine out of a twin screw cabin cruiser into his pickup. He didn't know the one he got was reverse rotation until he fired it up.

 

There have been a few posted on this site in the For Sale section. I have also seen them posted on marine sites but never saw one in person.
Not sure about wanting a block from one but the crank and rods would work.

 

Block would be the same for either, the camshaft and distributor would not.

 

I'm guessing the thought is old boat motors may have crudded up water jackets.

 

the boys 225 was/is marine out of a fresh water(69 chris craft) boat the intake and exhaust manifolds and timing cover were the only external differences, we cammed it and he still runs it. bought it rebuilt, when we pulled the oil pan someone had left a dozen latex gloves in the pan the prior owner had trouble with the shop that rebuilt it.

 

Bummer, there's a big chunk out of the bottom of the cylinder.

 

Boats with single drives are standard rotation from factory. With twin drives the port motor is reverse.

 

Depends on the cooling system. Some have a closed system with antifreeze and an inter cooler. As long as the zinc diode is in good shape it should be fine

 

My experience with engine catastrophic failure is you are lucky to salvage any of it. Yep, blew a rod completely, and in this case, the other 4 are intact. But those four experienced a VERY sudden stop, something I'm unwilling to bet a new build on. That and all the debris you now have distributed completely throughout the engine. The prospect of getting every piece of that removed is a bit daunting. Time to start over.

 

That was expected from my experience!

 

I’ll bet this one didn’t have a catastrophic jolt to a stop. More like just getting tighter and slower, even when giving more throttle. It probably just seized when it lost two cylinders that were previously were contributing. That spun journal sure did produce some heat/friction!
-Donny

 

Grandson said that it just started slowing down, smoking and looked like the Valdez was behind him.

So, if the boat engine is a bust, what easy swaps will fit the bellhousing and mounts?

 

Bellhousing pattern is the same for Buick, Olds, Pontiac, and Cadillac from the 1960’s through the 1990s, V8, 6 cyl, and some 4 cyls. It may be difficult to find manual trans flywheels for most of these. Block side bosses vary greatly. The V6 boat engines are viable, but look for either fresh water only use, or with a closed heat exchanger cooling system that never had salt water in the water jacket.
-Donny

 

Four trees.

 

Also some of those engines had the starter on the drivers side. The Buick starters are on the passenger side. Some bellhousings have starter bumps on both sides.

 

A Buick 231 Even Fire from late 70s up, as long as it came out of a rear wheel drive car would be the easiest swap, and they are plentiful.

The flywheel from the 225, if it is a true "Dauntless" will be a very heavy flywheel, and it is balanced for the 225 to smooth out the "Odd Fire". These flywheels are an excellent choice due to the weight, and they can be balanced neutral to work with the Even Fire engine.