Friday night

[BK911]

Started off good.
Was going to put this:
(Mercruiser 165hp / GM 250 I6)



Into this:
(1970 Sea Ray SRV190)



But then seen this:
(broken tab)



Which is supposed to look like this:





Bought the long block at least 3 years ago and just recently ~finished putting it all back together.
Installing the engine mounts, and...
Have not called the shop yet, looking for opinions for realistic expectations.
3 years is a long time, so I am guessing I eat it.

So...

Now what?
Can I weld a bung on?
Find a replacement block?
Boat's original block is cracked, which is why I bought this long block.
Had a really hard time finding the marine engine, but the GM equivalent is reasonable common.
Find the GM and start parts swapping?
There goes another couple years!

[Zeke]

Your pics from different angles don't show the mount that well. Welding will produce a lot of heat so not so good unless you have a bare block or at least no gaskets in the area. Also requires a lengthy cool down which is difficult in that situation.

You might consider brazing (silicon bronze) but some conditions are still the same — a lot of concentrated heat. not as hot and no cool down, but still....

Mechanical fastening is possible with machining a part. I even think some 3D printing is now strong enough.

I wish I could see that better. Obviously torque is going to work on that in both directions, so just supporting it won't work. I've seen some good Rube Goldberg solutions on other objects so keep thinking.

[BK911]

Better pic?
Broken face is the blue face in the red circle.
Looks kinda smooth for a broken surface.
There is a hole behind that maybe I can fab up something to bolt there.

[Zeke]

Well that's what I mean, it doesn't look broken. Only you know it is. So someone ground it off and screwed you over.

Yes, there may be enough casting there to imagine a new mount.

And if that's your best response, don't count on any more help from me.

[BK911]

Sorry Zeke, didnt mean to upset you.
Appreciate any and all input.
Here are some better pics:

Original engine:




Rebuilt long block:




Thinking maybe a pair of thick L brackets sandwiched on the case?

[Zeke]

If the arm in the 4th pic is the original mount then it appears to center on the mount tab. So the forces applied would be different than the L brackets. I'm not an engineer so....

Some will talk about 'polar moment of inertia'. I will simply refer to the L brackets as liable to try and twist the tab to break. If you can gusset those I think you can transfer the load to the block better. Less is not more here.

Sorry, that's all I got.