Technical Engine head corrosion!

[Magneto]

Hi gents,

I had to replace my Uno 1100 engine head, which was quite corroded (see pics below). My question is, can I still salvage this head, perhaps send it to an engineer to weld/skeem/seal it so I can sell it as a working part?


Thanks.

 

[porta]

Hi gents,

I had to replace my Uno 1100 engine head, which was quite corroded (see pics below). My question is, can I still salvage this head, perhaps send it to an engineer to weld/skeem/seal it so I can sell it as a working part?


Thanks.

I don’t see why not, have salvaged heads that were far worse than that and even one with a crack (that’s more specialised though and involved baking and filling then re-milling). Used to use Bradford Grinders for flatting and pressure testing and a place over Allerton way for all valves, guides, polishing, etc etc

 

[PuntoHowTo]

No amount of skimming is going to fix these big chunks of missing metal.

They would need to be ground out, welding and then reshaping on a mill. Highly specialised and expensive work, you can’t say that under the calcium deposits that there are more unseen cracks.

So yeah maybe the right person could put it right but the cost could be extremely high, so this would be the very definition of beyond economical repair

 

[vexorg]

It's hard to tell how deep that missing chink is, possible a significant skim would work, but unlikely

 

[porta]

It's hard to tell how deep that missing chink is, possible a significant skim would work, but unlikely

I missed that, must go back to opticians!

 

[PuntoHowTo]

That’s one of multiple missing lumps of metal,

Every cylinder has corrosion that is encroaching into the head gasket sealing area.

It’s basically scrap unless you want to spend a fortune on it with an engineering specialist

 

[vexorg]

Or just skim it until clear and stick on a few extra head gaskets for a bodge

 

[PuntoHowTo]

I think this is more of a case of "for sale, one heavy door stop, could work as a boat anchor for a small boat. buyer collects"

even an engineering specialist would probably tell you the same, its not useable and probably not repairable.

 

[s130]

Expensive! No question.

Being an alloy head a specialist could weld fill the missing metal. This would take many passes and between each pass attention to ensure no occlusions etc. between layers, .... If you like the reverse of "spark erosion" but with far more attention to layer structure and integrity.

As they say "nothing is impossible" but if this was my head and I was interested in alloy welding, especially layer building then I would have a go whilst also accepting that the head is scrap and any success would be "thrilling"!