cobrashoch Ron I been a GM tech for over 20 years. I been rebuilding motors for longer in my back yard. 90% of the wear a motor does in the last 10% of it's life. How did the wear happen??? If you do regular
oil changes and filters are replaced, the bearings ride on a thin coat of
oil, Where does the wear come from?? If the
oil keeps the 2 metal parts from touching all motors would last half a million miles. Sound like dry startups. In NHRA the top teams, not one is running a wet sump system and winning. There use the recover of dry sump to keep the oil off any spinning surface that can cause a parasitic load on the motor. Most of my cars and bikes have well over 100k miles on them. I have put a pre luber in my truck, because it is the last one I am buying. Someone else said in some conditions they remove the sparkplugs and crank for 10 seconds, Why?? To remove the compression in the cylinder and stop the rubbing of metal surfaces. It also cuts down on the wear and tear of the bearings. I run tight clearances in my motors if they are Aluminium because of the expanding rate of the metal. Everyone has a different Idea about this. Loose motors make more power, but are rebuilt alot sooner than tight ones. If you like putting bearings in after every 50-100 of engine running time, Have fun. Not me. We can talk about Carbs and Fuel injection another time. With the right throttle body and injectors, the carbs will lose every time on the same motor. I donot believe all that is shown tested in Mags like Car craft and Hot Rod are set up for fair testing. I will shoot you a e-mail next week about this. Have a good day, take the car out for a run. It's to early for the bugs to get in the super charger
Rick Lake