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Fuel vent valve wanted
Davegtst - 15/8/11 at 11:11 AM

Can anyone point me in the direction of a vent valve for my fuel tank? It needs to be the type that lets air in and out of the tank but won't let fuel past. Had a look on ebay, the only one i saw was from demon tweeks and they wanted around £40 for one! Are the pit bike ones any good? Do they let fuel pass both ways?

myke pocock - 15/8/11 at 11:45 AM

Not sure if IVA would accept this now as a vent but this is what I passed SVA on. I simply drilled into the filler tube, inserted a Nutsert as a bush and then glued a coil of brake line in with Araldite.

Myke 2463 - 15/8/11 at 01:28 PM

E bay Item number: 280497050485 £7.79 posted MY Motorsports Shop. NTDWM

sprouts-car - 15/8/11 at 01:40 PM

quote:
Originally posted by Myke 2463
E bay Item number: 280497050485 £7.79 posted MY Motorsports Shop. NTDWM



Isn't that a one way valve? Not one which will allow air in and out but stop fuel.

Davegtst - 15/8/11 at 03:57 PM

quote:
Originally posted by Myke 2463
E bay Item number: 280497050485 £7.79 posted MY Motorsports Shop. NTDWM


I've got one of those and it is a one way valve, it would allow air in take up the space of the used fuel but won't let air out to allow for expansion. Is expansion much of a problem with only a 25 litre ali tank, i know it can cause problems with plastic tanks of 60 litres and over.

macc man - 15/8/11 at 06:00 PM

I used a modified sierra vent tube. It has a ball bearing in to prevent fuel loss in a roll over. Cost nowt.