Oil Pressure Boost Kit (Relief Piston)

Oil pressure boost kit.
Type 1 / VW Beetle engines (except 25 and 30 hp).
VW Type 3 engines.

If you have an oil pump with a higher output, the oil pressure piston must also be adapted. This assembly replaces the original spring and piston at the bottom of the engine block (large slotted bolts) and increases the oil pressure for better bearing lubrication and better operation of the oil cooler.

Up to 7/1969 there is only one slotted bolt; after that there are two. For older engines you use the long spring and the "mushroom-shaped" piston.

Caution! The piston must slide in the crankcase without friction. If this is not the case, you must rework the piston with fine sandpaper. If the piston sticks, this can have serious consequences for the oil pressure in the crankcase. The oil pressure relief assembly with two oil pressure pistons consists of the long spring with the "mushroom-shaped" piston on the pulley side and the short spring with the normal piston on the flywheel side. To remove the piston from the crankcase without damaging it, you can obtain a special tool for this purpose. It is advisable to order this directly.