Locking Gas Cap for Model A Question

Compotato

Compotato

Junior Member
Does anybody out there know of a locking gas cap that will fit 30/31 Model A gas tank. Car show in Detroit is held indoors and one of the requirements is a locking gas cap, otherwise all fuel must be drained. Mfr? Part#? Any ideas?
 
Ask them if they will accept a taped gas cap, like with duct tape. That's what we have to do in Portland. I think we are also restricted to 1/4 tank, but i can't remember for sure.
 
30-31 should be no problem, the earlier threaded necks would be a problem for off the shelf fit, I know some of the old import caps came with adapters that had ears that could hook to the lip of a neck and be tightened with a screw similar to a motormeter ---perhaps a motormeter base could be modified for them, but the 30-31 neck size was used for many cars
 
I've seen them for '32 and up and all those seem to have an opening of approximately 1.5". The Model A opening is 1.8". Nothing listed anywhere for Model A.
 
Compotato said:
Does anybody out there know of a locking gas cap that will fit 30/31 Model A gas tank. Car show in Detroit is held indoors and one of the requirements is a locking gas cap, otherwise all fuel must be drained. Mfr? Part#? Any ideas?
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Have they ever had A's before?
 
I'm sure they have, but what is more surprising is that there's no locking gas cap to fit the A out there.
 
How handy are you? Make your own. Get a repop gas cap, a cylinder and have a go at it. This cylinder is weather resistant, 304 SS face and spring key shutter over zinc cylinder. Comes with a few different latch pieces to use as starting stock. Ingenuity required, not included.
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$7.58 from McMaster Carr. Several keyed alike, same price each! LINK
 
Thanks Mike,
I've already torn the guts from an old radiator cap that I intend to modify with one of the locking mechanisms you cited if I cannot find something off the shelf. Another idea was to fabricate a lock box to fit over the existing gas cap. Would not be as attractive as a genuine locking cap however.
 
I've seen locking gas caps advertised for bidding on eBay. That are suppose to fit Model-A's.........................:eek:

Bob-A:D
 
couldn't you drill and tap a set screw in the side of a cap into the neck. it wouldn't be a perminent thing and it would keep the cap looking more original.
 
What is a locking gas cap that will fit a 30-31 model A tank worth?? I've got one that has been sitting on a shelf for 30 years. I've never used it but I just went out and checked and it will fit the 30-31 tank. It has two keys, one inserted in the lock cylinder. The key moves freely but won't come out of the cylinder. I've got it soaking in PB blaster. I had two of these caps but gave one to my daughter. I had just left the key inserted so as not to lose them. It appears to be chrome plated with a little cover that slips over the key slot when the key is removed. I'm not too proud of this cap and would sell it in as is condition.
 
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