Noticed in an engine book the other day the advice to fill the combustion chambers in the head with a solvent to see if your valves are sealing properly. No leakage into ports over night means all ok
Hi John, That might simply be "Olde Fashioned" advice. Certainly, the valves should leak little, but that isn't a real world test. With an engine operating at 3500 RPM, figure out how long each valve
Darn good question. I just finished lapping all eight of my new valves after getting the head back from the machine shop. The blueing was still on the valves and seats. I have always lapped new valve
Well, Paul IS a professional. Here's what I do. Put some lapping compound on the inserted valve. Chuck the valve stem in your cordless screw gun, and spin it up whilst pulling the valve into the seat