Valve Angle Tests

I have to get on my computer later today to actually see the numbers good enough but one thing I see is the top cut for the 50 is too flat.

The rest of it I can’t see well enough on my phone.

Top cut angle and width is critical. And that applies to any seat angle. Once you get steeper than 50, it’s gets hyper critical.

You can kill 50 hp at 8500 just in top cut with a 55 degree seat. Just gone. I made my own cutter. It looked like it would kick *** and take names on the flow bench. It sucked.

That screw up cost me big time. I had to remove all the seats, weld the heads and unscrew my thinking.