Re: Oil hole on back of right head

Posted by HH56 On 2018/12/30 0:30:55

The heads are identical and can be used on either side. If the head were on the left bank the oil port would be in the front and used for the filter supply but if the head is on the right bank then the port is not used and is plugged.

The only other thing needing a redo with a conversion is the aux vacuum source if you keep the vacuum wipers. The aux vacuum source is in a steel line that goes up to the balance valve and is behind the engine. Since the crankcase pump is no longer present the easiest option is to go to a dual fuel pump and replumb the steel line which exits the block about midway on the right side just above the oil pan. You use the line plus any extra fittings or hose needed to connect to the fuel pump vacuum port. The hole going into the block where the steel line was connected is then plugged. If you have vacuum wipers and do not provide another aux source then the hose at the balance valve aux port should be disconnected and the balance valve port capped to eliminate the chance of any vacuum leak in case the check valve in the steel line should fail.

If you elected to do the pump conversion and also convert to the full flow oil filter then that block opening that was vacuum would be reworked and now used along with changes inside the crankcase to connect to the new full flow filter.