How do you plug an oil pressure relief hole?
This entails drilling a diagonal hole between the oil pressure RELIEF passage and the inlet passage to the pressure side of the pump, then plugging the original outlet of the oil pressure RELIEF passage into the case.
How does oil bypass mod change the piston?
Of course the piston is changed– the old-style piston has holes through the top, and if used in an engine with the oil bypass mod, would bleed air from the engine case back into the pressure pump inlet, and the engine wouldn’t make oil pressure. The system diagram changed accordingly.
Where is the oil pressure sender on an early car?
At the far end (top) of the passage, this is where the oil pressure sender is located on an early car, and the switch on a later one. Now, well below the piston there is another drilling into the case, this allows oil that gets below the piston to drain into the case, and also allows the air behind the piston to vent, so the piston can move.
Is the Porsche 911 oil level sender useless?
Quite possibly the most dangerous part in the car, the oil tank level gauge is indeed mostly useless. Its measurements are only accurate when the car is warm and at idle. At all other times, the gauge will read artificially low or high values. Some of the times the sender or the gauge will stick, leading to more false readings.
How to change the oil in a Porsche 911?
Check the bottom of your oil tank for the appropriate sized wrench that you need: it’s not uncommon for the older cars to have different sized drain plugs than were originally installed. Start by driving the car around, and letting it heat up to operating temperature.
Where is the oil drain plug on a Porsche 911?
Starting in late 1983, Porsche moved the location of this drain plug from the bottom of the engine to the side of the case. While all of your oil is draining, take the two plugs from the engine and the tank, and carefully clean them with a paper towel.
Where is the sender unit on a Porsche 911?
All 911s had their oil tanks in this location except for the 1972 911, which had it in the front. The sender unit is held on with 5 small nuts that need to be removed. It’s a wise idea to clean the area of any dirt or debris that may have been flung up into this area from the tires.