<VV> beat up bolt heads, and the wrenches that cause that

[Frank DuVal]

And the 13/16" deep for the valve studs is another!

Frank

djtcz at comcast.net wrote:

>Socket wrenches usually have a chamfer or bevel on the open end.
>http://media.allrefer.com/s1/l/s0528900-socket-wrench.jpg
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>The chamfer demonstates good workmanship, and probably reduces stress concentration in the socket  little bit, but when a bolt head or nut is not full height the lost contact area can beat up the fastener and the wrench will slip.  I have a few 6 pt sockets whose ends I've ground flat to provide maximum bolt hex contact. As I recall Corvair flywheel size is one. 
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>--
>Dan Timberlake
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