What crank keys do I use for SBC crank?
Hello guys I just bought a brand new scat cast steel crank 3.480 crank for a 1 piece rear main seal 350 small block. I bought a set of woodruff keys at advance auto today and I know I need two of them by looking at my crank. I am guessing looking at the crank slots it would take the bigger ones but know the exact size ones to use. It came with the following ones 3/32 by 1/2 inch,1/8 by 1/2 inch, 5/32 by 5/8 inch, 1/8 by 3/4 of an inch, and the last one3/16 by 3/4 of an inch. Also how do I install them cause I have never done one before. Do I just tap them in with a rubber mallet very gently or do they just kind of sit in there a little snug but not too tight?
I don't know the exact size. I use a hammer and brass punch to drive them in. Thay should not just fall in place.
As boogie states they need to be tight. After you install them in the crank, make sure you measure the height of the key in relation to key way depth of the balancer. I found the key way on my scat crank was not machined to the proper depth so it was necessary to mill a bit off the top of the keys. This can be accomplished with the keys in place.
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