Welding a block

[89retta]

Hi guys i have a 92 140 Johnson. I was in the process of rebuilding my engine and i noticed a crack on the intake side of the block. It is located by the # 2 intake port and is about a quarter inch long. The # 2 piston tossed a ring and also shattered the piston skirt. Just wondering if my block is garbage or would i be able to get it welded. Thanks for any help

 

[1946Zephyr]

Re: Welding a block

I would hunt down a good aluminum welder and let him see what he thinks. I seen it done before.

 

[boobie]

Re: Welding a block

Could you post a pict of it??

 

[Faztbullet]

Re: Welding a block

Needs to go to a marine machine shop. If its the sleeve thats cracked, that cylinder will need to be resleeved as you cannot weld sleeve..

 

[89retta]

Re: Welding a block

Its not cracked where the cylinders are. The crack is on the intake side of the block, the side where when you pull the block apart that the intake manifold is.

 

[1946Zephyr]

Re: Welding a block

It might be a good idea to post a pic of the damage, so we can see. I have an idea of what you're talking about, but some others may not.

 

[Faztbullet]

Re: Welding a block

Sounds like a piece of piston tried to come out the front crankcase half. This can be welded externally and a thin coat of MarineTex over repair. If welded internally it will need to be ground back down so rod will clear..

 

[CharlieB]

Re: Welding a block

I agree with Captain Zephyr.

Inspection by a competent welder/machinist is necessary. It most probably can be repaired, but carefully, as any warpage caused by welding may need machining to ensure the case halves mate and seal properly.

This is not a job for the average welder just down the street.