Technical 8ba merc flywheel pics - size references from photo guessing....

1952 MERCURY Flywheel FLATHEAD V8 | eBay

so is that a 9.5 or 10 inch flywheel

IF i were to buy it and fit a modern pressure plate to it, does the pushy bit from the thrust or throw out bearing lay in the same plane/space
241mm is 9.48 inches
the 6 on 60 degree drillings i think
means all pressure plates at that size fit
and it has nothing to do with certain manufacturers, i.e. clutch people make clutches and not manufacturers of cars

 

so IF the engine has a equal drilled flywheel for an 11 inch clutch
it means the engine is 1953
and it came from a bigger truck than a f100 1953
and came from a 1.5 tonner
that may explain why i though it was a merc engine as it had merc pumps on it
but thin belts too......
oh and it having high comp 8ba heads and ford stroke crank not 4''

so do i just redrill the flywheel from 11 to 9.5 hmm

got a cast half bell that seems a tad shallower where the hogs head fits, maybe that will clear

ahh
someone switched the rear bowl sump from it and fit the 3 rib car version, as it was removed and loosly fitted , or maybe the big trucks used tham as they clear

 

The cast 1/2 bell will take an 11" clutch. The stamped steel ones from a Merc will not.

 

Mercury flywheel pictured--uses a 10" Borg & Beck pressure plate.
If your throw out bearing is a large 32-48 style ,then use a 49-50 Mercury PP
If a smaller late 51-53 bearing is used, then a 52-53 PP is required.