valve seats
 

On a new head and new valves I purchased for my 190sl, the valve seats were not backed off so I sent it to a local machine shop. My concern is whether there was enough material removed to keep the edges of the seat on the valve from contacting the seat in the head. The photo is not the best in the world, but when I laped the valve in, there appears to be only .1 to .2 mm that is not contacting on the outer edge. Is this enough or should the seats be backed off further?

Thanks - Walt Puryear

Looks good to me. :)

Thanks for the reply. Is the edge of the valve contacting the seat not that much of a concern or is even a very small miss sufficient.:confused: