working on a 3 cylinder perkins diesel head. All the valves have dish shaped or concave heads. the original were flat. Got them from Qualcast.They are the correct number and do fit. They are bound to lower the compression some. is this what replacements are going to?Think a difference will be noticed? Don’t know what other brands are like.
This sounds like it is going to be a pretty lengthly discussion so call me at 931-459-2760. I am usually in the office from 9-5 M-F CST and am available right now.