Valve scarring?

[Omie01]

What causes this straight line scarring on my exhaust valves? Were these valve tips not hardened?

 

[c9zx]

What causes this straight line scarring on my exhaust valves? Were these valve tips not hardened?

Rocker arm contact patch area. Chuck

 

[Jeff73Mach1]

It is fairly normal-Unless there are grooves actually cut into the metal there is no reason to worry about it

 

[MeZapU]

Those marks are normal and looks like you have some proper rocker arm geometry going on. ::thumb::

 

[rocket366]

+1

Contact mark is center of valve tip looks good.

Paul

 

[piper62j]

Can you provide us with pictures of the underside of the rocker arms that contact the valve stems? Would like to see what those look like..

 

[Omie01]

I dont have pics of them but I can tell you the Scorpion roller rockers that were on these heads had absolutely no marks or scarring of any kind, I actually am keeping the set in case I need a backup set for my current engine build.