76 Locking Gas Cap

[zKars]

Well let's get this thread back on track.

My locking gas cap solution works for the Z's up to 74.  The key is to look and see how many screws hold the filler ring to the body. Three is good, four is bad. 

I want to offer a few of my modified 3-screw rings for sale. I also made a pretty good deal on some of these locking gas caps. I'm asking $99 USD for a modified powder coated filler neck ring + new locking BMW cap AND a new hand made rubber flap. Shipping is on you. 

Here is what I am doing so can understand the value of I'm offering for the $$.

Sandblast the filler ring, weld on the blob in "just" the right spot. Do a little hammer work around the inside ID to open it slightly so the cap fits better. Powder coat. The new locking caps I just bought need a little shining up to look good, so a quick trip past the buffing wheel. The two locator tabs on these new caps are slightly long and don't fit into our filler ring as is, so grind off a tad of their length and dress them up. Test fit. Slice up a new rubber flap. 

You will have to use the flat rubber sealing ring from your old stock cap in place of the BMW sealing ring. It's too thin.

One interesting note. There are two different outer diameters of the filler neck rings. Same bolt circle and same size where the cap fits, just the outer diameter of the mounting flange is different by about 1/8". Early and Late? The caps with the pie crust edge (early non-vented) verses the caps with the angle iron handle (late)? Anybody know for sure? If you care, let me know which one you want. 

If you have a 280 and have a four screw filler neck, you have to remove the entire neck and its one-piece upper hose tubing (see above pics) to do the "mod" to get the cap to fit. If you want to know what to do, let me know, I'll share a solution to add the "stop" to make the BMW cap work. If you're really desparate send me your neck I'll do it.

Let me know if you have any questions.