NOISY, BUT NOT ALWAYS DEFECTIVE VALVE LIFTERS Hydraulic valve lifters are probably the most precision machined part inside any engine. It does not take much to cause one to operate incorrectly. In this case we are not referring to lifter failure due to metal to metal...

HYDRAULIC ROLLER VALVE LIFTER PRIMING NOTICE (From G.M. tech bulletin) Notice: Ensure each valve lifter is filled with clean engine oil and the valve lifter does not tip over (plunger down) before the installation of the valve lifters. The loss of oil in the valve...

AMC DISTRIBUTOR GEARS MATCHED SET Where they may work if replaced individually, the failure rate increases greatly if you don’t replace both the distributor gear and the camshaft drive gear on an AMC V8 as a matched set. There are at least 3 versions of gears, each...

RV VALVE SPRINGS Most of our rebuilds are 70-80’s V8’s. Quite often our customers want a camshaft upgrade. The so-called “RV” cam is often re- quested. The grind most everyone uses was designed for a SB Chevy using 1.5 ratio rocker arms. This same grind is offered for...

Manufacturer Shop Solution: Standard and Reverse Rotation Marine Engines – What to Look For Boats with twin engines usually turn in opposite direction so the torque reactions of the engines cancel each other out. The following four drawings show how the crankshaft and...