The Ford Barn

russcc · 11-26-2018, 09:08 PM

Question for the engine builders. In the process of assembling the 59L block, 3 & 5/16" bore, Merc crank, ground 0.010 under, balanced rotating assembly. NOS Federal Mogul 0.010 under main bearings.
Vern Tardel's book, page 143, Main bearing cap clearance 0.001-0.001.5, using plastigage
Ford Motor Company V8 engine repair manual, 1948, Page 131a, Main bearing liner clearance 0.000-0.003
Ron Holleran's book, Nostalgia, Page 8., crank clearance 0.001-0.003, "grind or polish to the low side".

Opinions on main bearing clearance. Is their an advantage to having a little more clearance ? Thank you Fordbarners.

11-26-2018, 09:08 PM	#1
russcc Senior Member Join Date: May 2010 Posts: 2,871	Bearing clearance Question for the engine builders. In the process of assembling the 59L block, 3 & 5/16" bore, Merc crank, ground 0.010 under, balanced rotating assembly. NOS Federal Mogul 0.010 under main bearings. Vern Tardel's book, page 143, Main bearing cap clearance 0.001-0.001.5, using plastigage Ford Motor Company V8 engine repair manual, 1948, Page 131a, Main bearing liner clearance 0.000-0.003 Ron Holleran's book, Nostalgia, Page 8., crank clearance 0.001-0.003, "grind or polish to the low side". Opinions on main bearing clearance. Is their an advantage to having a little more clearance ? Thank you Fordbarners.