1950 SUPER C

Jerry Edd Allen · May 16, 2009

I NEED THE TORQUE SPECS FOR HEAD STUD NUTS AND ROCKER ARM STUD NUTS. IT IS MY UNDERSTANDING THAT THE VALVE CLEARANCE IS .014 HOT ON INTAKE AND EXHAUST, IS THIS CORRECT?

CNKS · May 16, 2009

Your valve clearance is correct. Torque the head in increments to 80 ft lbs, then retorque and adjust again after a few hours. Rocker arm torque unless held on by a head bolt is not critical, just get them tight. Super C did not appear until early-mid 1951. If there is any doubt the C has a 3-5 digit serial, the SC 6 digit. SC has curved brake and clutch pedals and disk brakes (cast covers on the SC vs stamped steel on the C).

ScottyHOMeY · May 16, 2009

Different book call for 65 or 80 ft-lbs on the head nuts. Most foks around here use 80.

Rocker studs I've neer seen a torque factor in the books, but working from the SAE table for rated torque on studs that size, and allowing fr the fact that theyy'll be wel-oiled, 25-30 ft-lbs will be good.

For valve stem clearance, .014 is a good number, but it only needs to be warm, not HOT. Best practice is to close verything up and then run the motor up to temperature, then open it back up to re-torque the head. In the time it takes to do that, valves and rocker will still be sufficiently warm to set them back to .014" for a good gap.

El Toro · May 17, 2009

Set your valves at .017 cold and check your SN
to make sure you have a Super C. Should be on the
seat frame. Hal

1950 SUPER C

Jerry Edd Allen

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CNKS

Well-known Member

ScottyHOMeY

Well-known Member

El Toro

Well-known Member

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