Rut
Obi Wan

Offline
Im working on my 1275 head this morning, lapping valves, cleaning and testing the results in preparation for finishing the head. Years ago I used a valve lapping tool with suction cups on the end and still have a set, but this time I used an electric screwdriver and a piece of 1/4" tubing to connect to the valve and finger pressure on the face of the valve to control pressure. This was about as quick and easy as anything could be and all the marks are good on both the valves and seats. When testing my handy work I used denatured alcohol since it leaves no residue and can escape thru tiny spaces. I used the weight of the valve only, no springs and had minor leaks on #8, 3, and 2 which I will lap again. I feel good about the process and the results, but is this the proper way to test for leaks? I know that static results can vary from real life of a running engine. Thoughts?
Thanks, Rut
Thanks, Rut