early panhead cases can you convert to timken bearing wheels

Bottom End (crankcases and crankshaft)
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cbellamore
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early panhead cases can you convert to timken bearing wheels

#1

Post by cbellamore »

I have a set of mismatched panhead cases I am looking to start a rebuild on,

left side is a 1953 and right side is a 1955

I believe 1955 was the first year they went to a Timken bearing on the flywheel correct ?

Can I run an earlier set of loose bearing flywheels and tapered pinion shaft in this case combination ?
Or can I convert the left side case to accept Timken bearing flywheels with the splined pinion shaft ?



john HD
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Re: early panhead cases can you convert to timken bearing wh

#2

Post by john HD »

Maybe.

you are correct '55 was the first year for timkens.

1955 uses a one year only shaft and flywheel. might be hard to find.

i do not know if a '55 case with a '56 and up flywheel and shaft would work, someone here should know...

john

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Re: early panhead cases can you convert to timken bearing wh

#3

Post by RUBONE »

You cannot convert a '53 left case to run Timken bearings. The cast in steel sleeve is not large enough to do it (having said that anything is possible with enough money and skill, but it would require extensive welding and machining to achieve. An early crank is a bolt in). The '55 right case is fine with an early crank and early left case. The right cases all used rollers, never Timkens, and the races and shafts from '40 up will work in them, or just use the '55 shaft and bearings.

Oh, and a '56 up crank fits fine in '55 left cases.

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