How big is the main bearing on a Ford Block?
How big is the main bearing on a Ford Block?
The rear of the Model B block rear main bearing saddle and cap are both to be counterbored to 2.875 inch OD and 0.125 inches deep to receive bronze thrust washers. Remove the rear main cap and counterbore the front of the Model B rear main saddle (only) in the block to 2.875 inch OD and 0.125 inches deep to receive a single bronze thrust washer.
How to prevent oil from leaking from the crankshaft?
File a large bevel on both edges of the front thrust washer only (the contact face of crankshaft thrust). Leaving a square edge on the thrust would cause oil to be wiped from the crankshaft. A small amount of RTV sealer is recommended to be used on the outside edges of the rear main cap to prevent oil leaks at the rear.
What should the clearance be for main bearings?
Dave’s personal views and experiences are included here with his permission for the reader’s consideration. Though the recommended running clearance for the main bearings is 0.00175″ per AER, Dave has slightly different recommendations.
What is the parting line of a cast crankshaft?
The cast crank has a very thin parting line where the two halves of the mold meet one another. In comparison, the steel crankshaft has a thicker parting line—usually between 1/4 and ½ inch wide. Ford forges or casts numbers on the counterweights of the FE cranks which may simplify identification.
What are the numbers on a Ford FE crankshaft?
Ford forges or casts numbers on the counterweights of the FE cranks which may simplify identification. As is the case in most FE parts, the numbers are helpful but not definitive.
How big of a rod do you need for a 428 crankshaft?
This crank is a good choice for upgrading or service while using existing OE dimension rods, but the flexplate or flywheel needs to be a 390 part; original 428 parts have balance weights on them and will not work correctly. The 4.125- and 4.250-inch-stroke crankshafts use 2
How big is the pilot hole on a truck crankshaft?
The pilot-bushing (or converter snout) hole in a steel truck crankshaft is larger in diameter as well, mandating a custom pilot or converter bushing for use in passengercar applications. The bushing must have the same ID, but the OD is larger. The required modifications are time consuming, but a skilled crankshaft shop can handle them.
