[larry@oma]

looking around online at various info: looks like Lycoming aircraft engines are to use a tester with a specific orifice size. Continental aircraft engines also specify an orifice size. i suspect all factory Porsche testers also all use the same orifice size? a larger orifice size will make your test numbers look a lot better? (less leakdown) anyone know what the orifice size is in a porsche factory tester is? thanks for the interesting replys. ....larry...