I finally had time to get the Gen 4 5.3 torn down. I removed the rods and pistons to open up the ring gap. Stock ring gap was anywhere between .015″ to .017″, not exceeding .017″ on any of the cylinders. Only the upper ring gap was modified. It was opened up to .028″ to .030″. This is done so that when cylinder temps rise, and as the upper ring temp rises and the metal swells, the ends of the ring don’t actually touch each other. This causes the piston to bind in the bore and usually results in a busted ring land or worse. Read more
Just a quick video, decided to show the load from the Pi, Display and the switch. The system is very lightweight load wise. Though I may see how low I can get it by removing unneeded services and apps.