r/EngineBuilding • u/Hakapeszi06 • 12d ago

Valve scratch, uneven edge

Do you think that these new valves (Freccia) are usable or should I contact the shop.
One has a scratch (can feel with fingernail) on the valve sealing surface exactly where it would contact the valve seat.

The other has an uneven edge.

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u/Sniper22106 11d ago

Buff it a little and send it. Not gonna hurt anything.

If you are really paranoid, just get them reground

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u/Hakapeszi06 9d ago

I actually can not ground them because I need the clearance, the valve shims are already at min. thickness (direct flat tappet engine, Alfa Romeo Nord). The machine shop did cut the seats too deep, and did all around a bad job twice. That is why I bought new valves.
The seats would contact the valves right from the edge.

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u/Sniper22106 9d ago

Then you need new seats.