fuel spill hole

[john 4d]

Just been looking at Bazstag's photos on the 'axle stands' topic. I can see the fuel tank vent pipe just sticking through the the boot floor. I've found my own old photo's of the same opening which I now have to drill into my new boot floor, so that's fine. I can't find, however,any reference to the hole for the fuel spill pipe from the fuel cap. Could anyone oblige?

Thanks

John

[john 4d]

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john 4d wrote:

Just been looking at Bazstag's photos on the 'axle stands' topic. I can see the fuel tank vent pipe just sticking through the the boot floor. I've found my own old photo's of the same opening which I now have to drill into my new boot floor, so that's fine. I can't find, however,any reference to the hole for the fuel spill pipe from the fuel cap. Could anyone oblige?

Thanks

John

Come on Guy's, someone must know? At least have a guess!

John

[alan_thomas]

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I just come in fom removing my tank (and engine!) So it is very easy to measure.

Viewing from facing the boot and taking the the rear, right corner as the datum thereare 2 holes one in the boot floor which had an original blanking grommetthe other in the vertical rear bulkhead. The plasic pipe from the bottom of the filler cap exits thru a grommet thru the vertical hole in the bulkhead.

Centre of hole is 40mm up from boot floor and 40mm in from the corner. Excuse my crud ridden boot floor thats why I removed the tank. - Alan

[Greenstag]

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Ok John just been out to have a look. The fuel overspill comes from the neck of the filler and usually passes through a filter before disappearing into the boot floor. To be honest I've never traced it further than that but here's what I found underneath, There is a drain hole which i persuming the pipe eventually meets. Hard to describe but its roughly 1-1.5 inches back from where the boot floor turns vertically to become the rear bulkhead and about 2 inches in from the inner wheel arch..In addition there is another hole I can feel...in the same linear position but this one is actually in the vertical bulkhead

David

[john 4d]

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Thank you both,

I knew about the holes, see picture and the reason the boot floor was replaced. Dave the line with the filter is the filler vent line, a 3/8" i/d clear plastic tube (mine had become opaque with age) which connects to the rear of the filler near the top. The line terminates with a 90deg rubber bend and another short length of tube ending with aslanted cut. Bazstag's photo shows this exiting through the boot floor opening.

The drain line is affixed to the portat the bottom rear edge of the filler and should be a petrol resistant tube the same as the flexible line else where in the fuel run. Alan shows this going through the vertical face of the boot rear wall. Alan, could you tell me how this line terminates once its 'outside' behind the diff mounting plate?

Somehow on reflectionthe use of the two holes a described above seems back to front, the drain should logically be through the vertical hole and the vent through the vertical with its bend to the vertical out side behind the diff plate keeping the crud out. What do you think?

On the related subject of boot floors, I'm guessing the the corrosion is caused by water drippingfrom thefuel tank's surfacecondensation and collecting on the boot floor. How can this be minimised?

[alan_thomas]

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john 4d wrote:

Thank you both,

Alan shows this going through the vertical face of the boot rear wall. Alan, could you tell me how this line terminates once its 'outside' behind the diff mounting plate? - It only goes thru about 1" and is cut at 45 degree although I cannot see anything significant in this

Somehow on reflectionthe use of the two holes a described above seems back to front, the drain should logically be through the vertical hole and the vent through the vertical with its bend to the vertical out side behind the diff plate keeping the crud out. What do you think? - Your reasoning sounds fine, I cannot guarentee mine have not been swopped around at sometime in the past.

On the related subject of boot floors, I'm guessing the the corrosion is caused by water drippingfrom thefuel tank's surfacecondensation and collecting on the boot floor. How can this be minimised? - might be a good idea to spray it with polyeurthane foam, like domestic hot water tanks. This would stop condensation and the tank from rusting as well - Alan