outboard with thrown rod. got it for $20! woooooo!

[BigB9000]

A dude on craigslist has a 78 115hp (just like mine) that threw a rod, and hes selling for parts.

Rather than just randomly buying new parts to solve my engines problem, Im thinking about buying his for $100 and swaping the igniton system.

Would that be a BAD idea?
Could a bad ignition system cause an outboard to throw a rod?

 

[R.Johnson]

Re: what would cause an outboard to throw a rod?

Re: what would cause an outboard to throw a rod?

The only thing I can think of is lack of lubrication, causing siezure, or a rod bolt backed out from improper torgue. A badly bent prop can also give a engine quite a shaking, making things' come loose.

 

[5150abf]

Re: what would cause an outboard to throw a rod?

Re: what would cause an outboard to throw a rod?

I would say to much RPM is the main cause for pitching a rod.

Don't know how the ignition could cause it to throw a rod.

I would get it , you can't buy a lot of parts for $100 bucks, shoot just the lower is worth several times that by itself.

 

[AEROCOOK]

Re: what would cause an outboard to throw a rod?

Re: what would cause an outboard to throw a rod?

Lots of things could contribute to the engine failure but ignition is unlikely unless the timing was off and it was detonating. The timing is an adjustment so I wouldent worry about it. In my area a motor like that (with a blown powerhead) would sell in about 2 minutes if advertized on the net for a hundred bucks. There arent too many parts that cost under $100 so the investment could pay off in spades and having a complete spare parts motor can also make diagnosing problems with your good motor cheap and easy.
I say buy it fast!

 

[BigB9000]

Re: what would cause an outboard to throw a rod?

Re: what would cause an outboard to throw a rod?

oh I am, tomorrow at high noon

 

[tashasdaddy]

Re: what would cause an outboard to throw a rod?

Re: what would cause an outboard to throw a rod?

revving the motor on muffs can cause run away, and throw a rod. check the condition of the wires, if brittle and flaking, may be a waste.

 

[BigB9000]

Re: what would cause an outboard to throw a rod?

Re: what would cause an outboard to throw a rod?

I bought it.

I talked him down to $20 if he were to help me put it in the trunk of my car.

Its a 77 where mine is a 78

So most of it is completely different, But I figured for $20 I could take it apart and gain knowledge.

And It'll be a good experiment to see if I can buy broken stuff and part it out on ebay and make a little extra money.

Pics to come.....

Its interesting to see what caused it to break