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Re: A question about C1 & C2 keys
Gary,
My original '56 Briggs & Stratton key, knockout not removerd, has a hole diameter which will pass a .171 (11/64) drill. Regards, -
Has the hole ever been drilled?
Jim,
Is it possible that someone drilled out the hole to that larger size? I have yet to see an NOS B&S key blank with that large of a hole.
I would love to hear from some original owners who still have their un-used 2nd set of keys available to measure.
GaryComment
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Re: Has the hole ever been drilled?
I have "A" and "B" keyway original B&S keys with knockouts intact, and the hole will pass a 5/64" (.077") drill, but will not pass a 3/32" (.093") drill.Comment
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John. I assume this is for a 67 key. *NM*
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Not by me nor to my knowledge *NM*
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Re: John. I assume this is for a 67 key.
Gary - To the best of my knowledge and from the original keys for my cars and many examples the original GM/Briggs & Stratton keys and GM/Rochester Products keys. The keys that came originally with GM cars thru '66 and '67 and I think thru '68 production came with the larger 9/64" dia hole in the KNOCK-OUT plug. Fact is if you check the 1966 Owner's Guide (p. 5) you'll see a picture of the keys with the old style bead chain thru the KNOCK-OUT plugs in the keys. My read is that the smaller 5/64" dia hole in the KNOCK-OUT plug that is typically of the '69 and later rectangular and oval head keys was an engineering fix to get owners to remove the KNOCK-OUT plugs so it was less likely for someone to note the key code number and then have a key made and then "borrow" your car. There are later SERVICE GM/Briggs & Stratton '68 and earlier keys with this smaller hole in the KNOCK-OUT plug. If you are really anal, original "large" hole uncut GM/Briggs & Statton keys blanks will show signs of the nickel plating in the hole where as if someone has drilled the smaller hole out, the sides of the hole will show brass. PeteComment
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Re: Has the hole ever been drilled?
Gary - While I agree that the size of the hole in Jim's '56 keys is somewhat larger than "new" keys, I expect it is because the keys are almost 50 years old and are brass that general usage wear from a key chain could well account for this. PeteComment
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Pete: a follow-up question
Pete,
If the small (5/64") hole keys were for 69 and more recent and for service replacement keys for earlier applications, wouldn't this argue that one should not see any of the B10/B11 (octagonal/oval) keys with the small, 5/64", hole AND with the key code stamped into the knockout? Assuming that is, that GM didn't do the code stamping process on service replacement keys. Or did GM stamp the code into the knockout when one bought a service replacement B10 or B11 key from them?
GaryComment
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Re: Pete: a follow-up question
Gary - I'm not sure there is a way to confirm you theory unless one can confirm the dates of manufacture; but I do have a potential data point that does not support small hole/stamped key code assumption. I have several "old stock" Original Briggs & Stratton SERVICE PARTS, Ignition Lock Cylinder Coded w/2 Keys Chev. Pass. 1968 that are "C" keyway keys (one of the boxes has a tab with a 1 68 date) that have key codes stamped on the KNOCK-OUT plugs but these have KNOCK-OUT plugs that have the smaller hole. The "C" key heads have the Briggs & Stratton/GM logo.
BTW, I suggest that the keys were stamped with the codes by the key/lock manufacturer, Briggs & Stratton; not by GM.
I believe all SERVICE replacement lock cylinders that were coded with keys had the code numbers stamped on the keys, as I have examples of NOS GM dealer SERVICE locks w/ coded cores that have Briggs & Stratton/GM logo small head keys with code numbers stamped on the KNOCK-OUT plugs (these have the larger hole) as well as "old stock" Original Briggs & Stratton SERVICE PARTS w/ coded cores that have Briggs & Stratton/GM logo small head keys with code numbers stamped on the KNOCK-OUT plugs (these also have the larger hole).
PeteComment
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Thanks Pete *NM*
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