Valve Lapping

[NAVRIG]

Hello all

Just started having a go at lapping in valves.My question is. When i see examples on you tube etc. it shows a nice circle on the seat and the valve that looks like a grey matte finish. Mine are coming out shiny as though they have been polished. Any thoughts.

Thanks

[oldktmdude]

   They will look polished because that's exactly what you're doing.

[NAVRIG]

Thanks for your response

I understand that is what I am doing I was just wondering why I am not getting the same look as all the others I have seen . As mentioned before a nice circle that looks grey and a matte looking finish not shiny .

Thanks again

[racerrad8]

There is several different grits of lapping compound.

The valve and seat material might polish instead of grind,

As long as you have a nice concentric pattern on the seat and valve you are good to go.

Randy - RPM

[NAVRIG]

Thanks so much just wanted to be sure