Harland sharp roller rockers - measure pushrod length

If you look at your bottom picture, you see how the oil hole to the cup is positioned relative to the adjuster. You have the adjuster correctly postioned. I'd bet everything I have that if you measure how far the adjuster is out of the rocker it will be very close to .281 which is what it should be.

Now you have to consider what happens at low engine speeds. Most guys don't run enough pump volume and not enough pressure. At low engine speeds, look how far the oil has to squirt out of that hole just to hit the adjuster and oil it and the cup. These are not Chevys and running a low volume pump with high spring loads and agressive lobes is death to pushrods and adjusters.


Also, you can be sure your shafts have to go up and towards the intake manifold. They ALL do. If you go to Mikes web site (b3racingengines.com) and read his tech stuff and really think about it, you'll wonder why people use lash caps, longer valves and other crutches which only make it worse. A centered pattern isn't nearly as important as getting the sweep down.

How about switching to oil through push rods and a hv/hp oil pump? I am running a stock replacement Milodon oil pan and I am running these lifters Comp Cams part # 867-16