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Post Info TOPIC: Fuel filler and petrol cap


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Fuel filler and petrol cap


I'm about to start plumbing in the fuel tanks and as part of this I need to order two new filler caps. I notice on both the Rimmer and Moss sites that there is a chrome escutcheon plate and fibre washer (not available) that fit below the cap. Now I can't remember removing an escutcheon plate nor is there one amongst my fuel filler parts. I've got everything aside from these two parts. Were they fitted by Peerless?

I've also noticed that the indentation on the new body  makes it difficult to open the cap. Perhaps the escutcheon lifts the filler cap up a bit making it easier to open??

Finally, is the fibre washer necessary and is there an alternative?



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Yes, you need the spacer. 

The fibre thingy is not essential, because you are not sealing anything, but you might want to stop the spacer digging in to the paint.

The cap needs to sit with the catch at the 10 or 2 o'clock position so that it doesn't foul on the window.

F



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Thanks Frank. Think I might use my circle cutter to cut a disc out of gasket paper to replace the fibre one and get the chrome escutcheons ordered too.

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ooooah, I've got mine set at 3 o'clock......



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Aah, you must have a car that was assembled in the summer.

F



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I'd always assumed it was meant to be at 3 o'clock.

On another related subject, has anyone made any worthwhile improvements to the tank breathers. I've got a couple of breather valves on order but so far, that's it.

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Apologies if I'm starting to sound thick here but I'm becoming a little confused. I assumed that the chrome escutcheon ring or spacer went between the filler cap and filler neck (the part with the large hex head) but both the Moss & Rimmer illustrations show this spacer as fitting below the hex part of the filler neck. If correct, this would suggest that the filler neck goes through the body from the outside of the car and is held in place by the rubber hose that goes on to the neck. Is this correct??

I had thought that the filler neck went on from the inside of the car and was held in place by tightening it up against the filler cap on the outside with the spacer between the cap and neck.

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Look at the Moss fuel tank diagram.

The cap and spacer fit outside the body.

There's a large hex nut fitting under, that the cap screws into.

The hose fits into this...

F



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Here you see the spacer between the cap and the bodywork.

20201215_224953.jpg



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this is going back about 25 years now but I used diesel Austin Montego filler pipes as they were formed/bent somewhere near what I wanted and had a steel breather pipe that was externally fixed to the main pipe but then entered (welded) into the neck just below the cap.

the other end was free to fit a flexi pipe to (tank to pipe)

When you're filling up you can just see this and when its getting full it spits out and you know to ease off.

Scrapyards are not quite so accessible these days so you might have to go "rubber" all the way. 

 



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Well, surprisingly, the steel sections of the filler pipes are in good condition. For the filler, I'll be using 2 new 45 degree rubber sections with the steel pipe between (as per original) and, for the breather, I'll run a rubber pipe back up the filler neck, fit a breather valve at the top and then run another pipe back down to exit in the wheel well to let the fumes escape.

Thanks to Erik and Frank for clarification on the cap situation.

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