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Message: [QUOTE="old man dave, post: 1378158, member: 1009"] The pedestal plugs don't back out if initially torqued properly. And in the long term the steel plugs seize up to the aluminum pedestal due to electrolysis. Just don't use anti-seize, let chemistry do the work, Mother Nature will weld them together. Good luck taking them out later. The pipe plugs in the gutted EBPV, I just torqued the Sh#t out of them and when I checked them 80k later, they really didn't want to come out then either. I did remove the EBPV shaft bearing sleeves before tapping the EBPV housing though. As far as improved oiling? No such luck. The piston is moved by differential pressure, when the solenoid operates, oil is drained off of the back side of the piston allowing engine oil pressure to push the piston, operating the EBPV (under cold engine operation). The piston isolates the turbo supply pressure side from the drain side. The piston drain side oil supply has an orifice to limit oil flow so not much oil is diverted when the solenoid is operated, the higher oil pressure on the supply side of the piston then pushes the piston to the closed side. The drain hole is larger than the drain side oil supply orifice, llimiting supply oil and causing drain side oil pressure to drop. Piston then moves. When the solenoid is not operating, then there is no oil draining off (normal warm operating conditions). Oil pressure is equalized on both sides of the piston, so no movement of the piston and that little spring in there has just enough force to keep the piston in the open EBPV position. So when you plug off the solenoid or just leave it in there, there is no more oil available to the turbo than usual under warm engine conditions (EBPV open). I had the solenoid (with electrical plug chopped off) in there with no piston guts without a problem for thousands of happy miles. I used to work on sub periscope hoists, differential pressure is used to raise and lower the scopes. Oil pressure problems did occur when some dufus:morons: would gut out the piston assembly and then leave the solenoid plugged in, allowing oil to drain out of the piston cylinder under cold engine operation. With no piston to isolate the turbo oil from the drain oil side there would be loss of oil pressure to the turbo bearings since the solenoid valve being open would be directly draining the' turbo oil supply. Definitely baaad Ju-Ju. [/QUOTE]