One for the Volvo guys.

[gery w]

Helping a friend today and found this debris in the oil pan of a Volvo 41a and have no idea of what it is or where it's came from.
The engine is being repaired due to a valve stem shearing and dropping the valve into no5 cylinder, wrecking the piston and the liner.
Any thoughts? They measure about 3mmx 7mm with a hollow centre

 

[volvopaul]

Helping a friend today and found this debris in the oil pan of a Volvo 41a and have no idea of what it is or where it's came from.
The engine is being repaired due to a valve stem shearing and dropping the valve into no5 cylinder, wrecking the piston and the liner.
Any thoughts? They measure about 3mmx 7mm with a hollow centre

They are aligning dowels can't think at the moment where from as I'm in the pub

 

[volvopaul]

Could be part of the piston cooling jets , check there ok before usual rebuild, in fact chang them all while it's down

 

[aquatom]

They look like piston cooling jet nozzles to me.

 

[gery w]

Thanks for the reply's, as far as I can see all the piston cooling nozzles are intact I will give them a good going over tomorrow
I am seeing signs that this engine has been worked on before but have no idea what's been done to it
Thanks

 

[gery w]

I'm also wondering were the best place would be to buy the new piston and liner, volspec want £450 for the liner?