by Donnie Hurt | Jun 1, 2023 | CYLINDER HEADS
QUICK VALVE SPRING CHECK For a quick check or if I don’t have a Spring Height Mic that is small enough, I use a telescoping gauge to get the height off the head. Then I have various Valve Adjustment Discs I can use to simulate the retainer thickness and I...
by Donnie Hurt | Jun 1, 2023 | CAMSHAFTS & VALVE TRAIN
CAM RELUCTOR-WHEEL BLUES On the 2006-2016 GM 2.4L Eco-Tech engines, beware of the reluctor-wheel attached to the intake and exhaust camshafts for the cam sensor. These are just pressed on. If they get hot and lose their press fit, they will come loose and move. The...
by Donnie Hurt | Jun 1, 2023 | CRANKSHAFTS & CONNECTING RODS
V10 BALANCING ACT When balancing V-10 cranks, I use my four V8 bobweights and then two V6 bobweights on the fifth journal. I’ve double checked this by moving them around after the crank is balanced, and there is no change. It works great and eliminates the need to...
by Donnie Hurt | Jun 1, 2023 | CAMSHAFTS & VALVE TRAIN
GEN VI LIFTER GUARD I have a big block Gen VI tip that will provide oiling and windage improvement at no cost. When a builder uses retrofit roller lifters and no longer has a use for the hold down spider, I find it useful as a cover and shield by modifying it and...
by Donnie Hurt | Jun 1, 2023 | OTHER SHOP WORK
IN HOUSING SHAFT REPAIR Let’s say you need to repair damaged threads on the impeller end of a pump or turbo shaft, which is recessed in the housing, and maybe even mushroomed by a hammer-happy tech. You cannot remove the shaft from the housing because of the...
