Woodruff/Crankshaft key question

[Brett James-McCall]

The crank I have got from Frank appears to have 3 slots for a woodruff key. This appears consistent having looked at other Ford Racing 302 cranks that they have this (weirdly not the Boss crank).

Does anyone know if this utilises a special key, or do you just put in 1/2/3 smaller keys? It is still 3/16 width like a normal key. Thanks

 

[Jac Mac]

Just three single keys, nothing special, take care when installing timing gear and damper to ensure key(s) do not move/rotate in groove and lock damper up during installation.

 

[Brett James-McCall]

Thanks Jac, slot sizes are 3/16 × 11/16. So what length would you go for? 3/4 or 7/8?

 

[Jac Mac]

Thanks Jac, slot sizes are 3/16 × 11/16. So what length would you go for? 3/4 or 7/8?

Those particular 'slots' are circular rather than oval, so if you use a coin or washer to match the radius in the slot you will have something to compare it with at the engineering supply shop. With the washer in the slot you could use a fine tip marker pen to draw a line on it at approx keyway height to get the length you mention.