Piston Cooling Jets

Jets located in the cylinder block provide piston and piston pin lubrication and cooling. One jet per cylinder is used. Each jet is located in a drilling in the cylinder block and is secured with a bolt. Pressurized engine oil is supplied via the drilling to the jet from the oil pump.

The jets spray oil onto the inside of the piston. The oil coats the underside of the piston to help cool each piston crown. Additionally the oil enters a hole in the top of the connecting rod and lubricates the small end bearing and piston pin.