Purchased a Gearhead rebuild, need to Pre-oil via pressurized oil through oil sender hole... Small threads, need to know if anyone know if it is 1/8" pipe... Straight metric, SAE...
the process requires using/making a pressurized oil vessel to feed the oil channels just prior to start-up... minimizing/eliminating the dry run time.

 

If you use, assembly lube on the crank bearings, rod bearings, lifters/etc and coated the cylinder walls in oil you won't have a issue with damage.

 

I just dont think that pre-oiling on these is an issue. 4.7's have alot of issues. I dont think pre-oiling will fix them. Why do you think you need this?