massey 135 block

The main difference with blocks is the early blocks used a cord rear main seal while the latest blocks use a lip seal so the block/crank/sump is different. Direct or precombustion chamber motors could be either.

The industrial motors use a different crank, harmonic balancer and timing case allowing the full horse power of the motor to be taken off the front of the motor.

The later AD3-152 motors use different pistons, head and injectors which are placed at a different angle to get 48hp rather than 43hp.

Check the Bareco site and other suppliers to check what goes with what. I"ve been rebuilding a burnt MF135 and have acquired an industrial AD3-152 and an old Lincoln welder fitted with a A3-152 along the way.

Sorry it is a 1969 not a 1967 Perkins. Here is a picture of the engine it is from. I just decided to part it out after I cleaned it up and found a problem with the end on the crank that the front pulley goes on so the crank was bad. Mark H.