Fit and finish of the filler neck on Bugeyes is something we take very seriously. If the neck is too high in the back deck, it can look unsightly and detract from the overall look of the car. If it’s too low? It might look okay, but it can cause your car to shut-off prematurely.
The photo above is a filler cap setup on a Bugeye in our network that quit running before returning home, and when the client went to open the fuel cap, the tank hissed. This means the tank isn’t venting properly, in this case because the filler neck gasket is blocking the underside of the cap. When the cap is hard up against the rubber gasket as shown above, the cap cannot properly vent.
If your filler neck gasket and fuel cap are touching, you will need to fix it or excessive vacuum in the tank will stop your fuel from flowing to your engine and kill your car. How you fix it depends on what fuel tank you have installed in your Bugeye.
If you have a replacement fuel tank like the one we sell in our catalog (you can buy your own by clicking here, they are pressure tested for leaks and come pre-loaded with an upgraded fuel sending unit), the metal neck is detatched from the tank and a piece of rubber hose connects the two. That means fixing a venting issue is as simple as climbing in the boot, loosening a couple of hose clamps, sliding the neck up a little bit, and tightening the clamps back down. Very easy!
If you have an original fuel tank (or an accurate reproduction of the original), the filler neck is welded directly to the body of the tank. This means you cannot simply move the neck up because the tank is hard-mounted to the boot floor and cannot be raised as an assembly. So how do you fix this with an original tank?
One option would be to replace the tank (which you can buy by clicking the photo above or by clicking here). Another would be to climb in the boot and cut the neck with a pipe-cutting pliers, which we happen to sell in our catalog (you can buy your own by clicking here). Then you can add a piece of rubber in between the now-detached neck and the main tank (we also sell the rubber hose, which you can get by clicking here) and voila! You have an adjustable-height neck!
Should you not be interested in climbing into your boot and cutting your fuel neck, there is one other option you can deploy: replace your original-style fuel cap with our locking fuel cap. Our locking fuel cap sits higher on the neck than the original fuel caps do, allowing them to vent properly even when the gasket is too close to the top of the neck.
We offer a full line of fuel system parts to tackle any Bugeye fuel delivery project! Chick the photos below for some of our great products or click here for our full catalog!
