REAR MAIN PAIN We are still getting lots of calls on rear main seal leaks on LS engines after rebuilds. We suggest engine builders install the rear seal with the lip facing the crankshaft, like all other engines, regardless of installation instructions. This change in...
GM AFM VLOM The GM Active Fuel Management, or AFM Engines in 2005-2014 5.3L and 6.0L Passenger Cars, Trucks and SUVs are prone to lifter failures. These lifters are expensive and labor intensive to replace. As is common with lifter failures, the lifter usually gets...
A BIT OF KNOWLEDGE Three tips to make your drill bits last longer.1. choose the right bit. A black oxide coated bit helps reduce friction and increase chip flow but shouldn’t be used on nonferrous materials. TiN is a titanium nitride with a gold color that can run...
SUBARU HEAD GASKET TECH The EJ series 2.5l boxer engine has been powering many Subaru vehicles since 1996. With many different variations, they all share the potential for developing head gasket leaks. O.E.M. gaskets were composite or early generation MLS designs,...
SEAT CUTTING TIPS When cutting in valve seats with a single, multi angle blade, especially new ones, try to do the least amount of work with the profile tool as possible. For instance, if the bottom angle is 75°, cut as much of the seat away as you can with that...
AFM DELETE THE RIGHT WAY When performing a performance camshaft upgrade on a LS engine that is originally equipped with the Active Fuel Management system (AKA: AFM or DOD) it is advised to remove the AFM solenoid assembly from the engine and convert the engine to a...