standard versus automatic crankshaft

[9389]

How can you tell the difference between them ? Have casting numbers but understand it is hole size. HELP
 

[joefrazer]

The crank used in the automatic transmission has a larger hole at the transmission end for a pilot bearing. Of course, I don't have its size offhand but I'll check my documentation to see if it's noted.

[kaiserfrazerlibrary]

THIS IS UPDATED FROM LAST NIGHT

According to the 1951 Kaiser & Frazer parts books, the standard crankshaft (p/n 207146, both makes) came with a bushing; the hydra-matic crankshaft (p/n 209227) does not come with the pilot bushing (separate part) and uses a different design flywheel.  The same part numbers as listed here seem to be carried through Kaisers into the 1955 model year.

Attached to this is a .pdf file listing engine numbers involved in an attempt by the Detroit Engine Division to rework the standard transmission crankshaft for use in engines set up for the Hydra-Matic.  Please read the cover page carefully; you will see that these reworked crankshafts should NOT be used if the engine gets an overhaul or rebuild; replace with the proper part number.

Oh yes, as far as the Service Bulletin indexes go, the dealer & distributor service bulletin Mr. Alexander refers to was never released.  This is the only information out of the factory on this subject.

[9389]

yes if someone does have the crankshaft hole diameter and depth that would help a lot.
Will run the numbers against casting numbers i have

thanks all

[joefrazer]

Attached are a few photos of standard and hydramatic cranks. The standard unit is on the left. The difference is apparent with the hydramatic unit having a larger pilot hole and a thicker flange.

Hope this helps!

[9389]

thanks that what I needed. Pictures worth 1000 words