valve grinding

[ntintruder]

Does anyone know if you can grind the valve faces on a 1976 Goldwing ? I am going to clean up some cylinder heads and I have been told to have the seats ground but the valves should be replaced, I have also been told the valves can be ground, so which is it?

[Maz]

Does anyone know if you can grind the valve faces on a 1976 Goldwing ? I am going to clean up some cylinder heads and I have been told to have the seats ground but the valves should be replaced, I have also been told the valves can be ground, so which is it?

Both. You grind the valves into their respective seats. If the valves are damaged beyond grinding, they should be renewed, but you will still have to grind the new valves into the seats.
If there is major damage to the seats, they can be re-cut, but, again, valves will need to be ground into the re-cut seats.

Maz

[dingdong]

Don't grind the valves. You can cut/grind the seats. But these valves have a thin stellite coating on them. Grinding will remove it and they will burn. Lap them into the seats but don't grind them.

[Maz]

Don't grind the valves. You can cut/grind the seats. But these valves have a thin stellite coating on them. Grinding will remove it and they will burn. Lap them into the seats but don't grind them.

Dingdong, I think the terms 'grinding' and 'lapping' get confused between the US and the UK. I was, indeed , referring to 'lapping' the valves with paste. Apologies to ntintruder, too, for any misunderstanding.

Maz

[dingdong]

Don't grind the valves. You can cut/grind the seats. But these valves have a thin stellite coating on them. Grinding will remove it and they will burn. Lap them into the seats but don't grind them.

Dingdong, I think the terms 'grinding' and 'lapping' get confused between the US and the UK. I was, indeed , referring to 'lapping' the valves with paste. Apologies to ntintruder, too, for any misunderstanding.

Maz

Yeah, you guys need to learn to speak proper English.

[Maz]

Don't grind the valves. You can cut/grind the seats. But these valves have a thin stellite coating on them. Grinding will remove it and they will burn. Lap them into the seats but don't grind them.

Dingdong, I think the terms 'grinding' and 'lapping' get confused between the US and the UK. I was, indeed , referring to 'lapping' the valves with paste. Apologies to ntintruder, too, for any misunderstanding.

Maz

Yeah, you guys need to learn to speak proper English.

I guess I need to watch some more US program(mes) on TV......not that you could get any more over here!
Maz

[ntintruder]

Yeah I know about lapping the valve to the seat after the seat has been ground and I was pretty sure that you can't grind the valves. I've done Honda 750 heads and we always replaced the valves with new, so I thought that that would be the case with the Goldwing. Anyway, thanks for the confirmation.