Looking for back half block for 260, 280, or 300

[Laser88]

****UPDATE, FOUND ONE*****

Small bearing block could be nikasil, steel sleeved, or some combination. If it needs sleeves that's okay also. Let me know what you have. Thanks. Bob

[25two.stroke]

Are you wanting one to measure ports off of or one to build? I have some screwed up 260s and a screwed up 280. All need welding, not just sleeve work. What exactly are you after?

[Laser88]

Mine cracked so I need a replacement back half. I can put sleeves in myself and welding is a possibility if it's something that's not too difficult to weld. Let me know.

Thank you

[rjdubiel]

I would give Rob a call at Marine Machine. He may be able to fix that.

[Laser88]

I would give Rob a call at Marine Machine. He may be able to fix that.

Thank you for your suggestion. Since you offered a potential remedy, I am operating under the assumption that you have a deep knowledge of metallurgy and welding.

Here's what I see: The crack starts from #5 cylinder from the poppet on the outside of the block all the way through the water jacket, exhaust port, and through the bottom of the sleeve holder. You can spray WD-40 on the outside of the block and it will end up inside the cylinder. This crack is behind the water jacket and I wonder if he could contort himself to position the welding tip in such a tight space? Really it's difficult even to see it behind the sleeve holder. Otherwise the sleeve holder might need to be completely removed and then I don't know where we would go from there?

After reading my reply, do you still think it would be worth troubling Rob? If yes, would you please send his contact info my way?

Many thanks in advance. Cheers

[rjdubiel]

Thank you for your suggestion. Since you offered a potential remedy, I am operating under the assumption that you have a deep knowledge of metallurgy and welding.

Here's what I see: The crack starts from #5 cylinder from the poppet on the outside of the block all the way through the water jacket, exhaust port, and through the bottom of the sleeve holder. You can spray WD-40 on the outside of the block and it will end up inside the cylinder. This crack is behind the water jacket and I wonder if he could contort himself to position the welding tip in such a tight space? Really it's difficult even to see it behind the sleeve holder. Otherwise the sleeve holder might need to be completely removed and then I don't know where we would go from there?

After reading my reply, do you still think it would be worth troubling Rob? If yes, would you please send his contact info my way?

Many thanks in advance. Cheers

damn. maybe not! Was just thinking a crack from the outside of block in was the only one. But maybe he has a line on a block also. anyway, good luck with the search.

[Laser88]

Found one. Thanks Scream&Fly