Oil pressure relief valve bypass system used on LeMans 904 engines for racing. This aluminum block and fitting assembly would redirect oil normally dumped back in the crankcase to the oil supply circuit, preventing excess oil buildup in the crankcase. If you recognize this device then you should know what additional parts are needed to make it complete and fully…
New old stock Nippondenso W25EN spark plugs, set of eight for an engine. These non extended tip plugs are meant to be used with high dome racing pistons which would interfere with standard spark plugs. Heat range is same as a Bosch "4". This is not an original factory plug but fits and works perfectly with four cam heads and…
New old stock Bosch W 240 T 2 spark plugs, sold as a set of four. Used on four cam engines with low dome pistons. For tune up or nice for your concours tool kit. Comes with original packaging.
New old stock number four main bearing for 356 / 912 pushrod engine with three piece case. Standard crank, first oversize line bore on the case. This is an unusual bearing and not currently offered by Porsche. All alloy, not steel backed. If your third piece bore is a little oversize and needs a line bore, you will need this…
New old stock oil control ring set for factory Mahle 85mm pistons, 5mm wide. For original style cast pistons with oil control ring below the wrist pin. One piece design. 1500cc engines. If you are re-ringing original pistons, this is the hardest ring to find. Sold as a set of four only.
Pulley side main bearing race for "80mm" Hirth roller bearing crankshaft. The 80mm crankshaft fits four cam engine types 547 (550 Spyder), 547/1 (356 Carrera 1500GS or GT), 547/2 (550A Spyder) and 692/0 (1958 356 Carrera 1500GT) This race measures 80.06mm on the outside diameter and 65.04mm on the inside diameter. The inside diameter has been resurfaced to the correct…
