Wheel Cylinder ID ???? 1940 FORD

19Fordy

19Fordy

Well-known member
I am noticing that the wheel cylinder internal bore size for 1940 Ford cars varies by different sellers. My 40 coupe was an early production car. I believe the correct wheel cylinder bore for the front is
1.00 x 1.125 and the rears correct size is 1.250 x 1.00. Is that correct?

I notice the GREEN BIBLE lists two different part numbers for the front and the back so I am thinking there are two different sizes. Thanks, JIM
 
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While I'm far from an expert; from my experience '39-'41 fronts were 1"x1-1/4", '42-'48 fronts were 1"x1-3/8", and '39-'48 rears were 1"x1-1/8".

Now-a-days it seems all the front cylinders sold are the '42-'48 1"x1-3/8" sized units. They have worked OK for us on the earlier type backing plates. Probably an improvement.

All sizes of cups are available; but, unless things have changed, in the past only NOS or NORS cups seemed workable when rebuilding cylinders.

I think someone recently posted NAPA cup numbers that are supposed to be good.
 
rich b said:
While I'm far from an expert; from my experience '39-'41 fronts were 1"x1-1/4", '42-'48 fronts were 1"x1-3/8", and '39-'48 rears were 1"x1-1/8".
Click to expand...

All of the measurements that Rich reflects above match the dimensions that I REMEMBER from some years back, for what my memory is worth.

Coop


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