How does a W2 head oil the rockers/valve train?
O.K, So I went and looked at a pair of X heads I have on the bench.
Out of the five pedestals there is only one oil supply hole for the rocker arm shaft. pedestal #2. Second from the back on the right (Pass) side and second from the front on the left (drivers) side. the supply hole is not drilled straight through like I thought, it looks to be drilled half way through from each side of the head at about a 30° angle to each other.
Oh and I found my receipt when they (M&M cylinder Heads) built the motor, looks like I have Fel-Pro 1008 head gaskets.
If you are smoking adjusters there are THREE (and only THREE)reasons why this happens Nothing wrong with the way MoPar oiled the rockers/pushrods, in fact, I know that some Pro Stock guys were looking to get rid of PR oiling back in the early 's. Don't know the outcome and don't really care.
If you have oiling issues with OE Chrysler oiling you need to have PRESSURE. Anything less that PSI hot is asking for issues. It's NOT a chevy (thankfully).
The second issue is how many threads are out of the bottom of the rocker. Depending on the oil hole (Crane moved the oil hole 2-3 times so look at your rockers...Norris stuff is pretty sweet and is usually correct) you should have 9/32 inch of adjuster showing (approximately .280) plus .050 minus ZERO. That is with head gaskets and lash set correctly. If you vary from this, you will likely pay with parts to the parts gods (and they are hungry gods).
The single BIGGEST issue with oiling is from MoPar Performance (or Direct Connection if you are from my era) itself. Yes, it's true. Here is the FACTS.
The rocker shafts you get from MP are drilled for TA rocker offset. That's right friends and others. The oil holes in the SHAFT are in the incorrect spot. With the valve on the seat, rocker lashed and the adjuster removed, you should be able to stick a piece of wire through the hole in the rocker and into the shaft. I will ASSURE you that the hole in the rocker WILL NOT line up with the hole in the shaft. Grooving won't help. You will need to set everything up in as run positions, (I always blue the shafts first) then scribe on the shaft where the hole should be. Disassemble, redrill the holes in the correct positions, block the OE holes with lead shot and reassemble.
Then you will have correct oiling.
Anything else is just wasting your time.
