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Screw in fuel tank breather
speedyxjs - 20/4/10 at 09:31 AM

Two questions really.

1. Can you get 2 way fuel tank breathers that screw in and if so, where from?

2. My tank had fuel in it so how can i drill the required hole for the breather without getting metal filings in the fuel or will filings not affect the car as it will get caught in the filter?

boggle - 20/4/10 at 09:59 AM

you could try a vacuum (spelling?) cleaner near the drill bit, or wash it out after??

paulf - 20/4/10 at 10:27 AM

I definitely wouldn't put a vacuum cleaner near fuel vapor as it would be quite likely to ignite any fuel vapor drawn into it I have heard of it happening..
I would coat the drill bit in grease and drill slowly removing the swarf as you go, you could add an extra filter in line when first using the car to catch any remaining swarf.
Paul

quote:
Originally posted by boggle
you could try a vacuum (spelling?) cleaner near the drill bit, or wash it out after??

paulf - 20/4/10 at 10:30 AM

My car is fitted with a fuel cap from an MGB which has the valve built into it, i used a filler neck from an allegro which it happened to fit and welded a flange on it to fit the tank.
Paul

quote:
Originally posted by speedyxjs
Two questions really.

1. Can you get 2 way fuel tank breathers that screw in and if so, where from?

2. My tank had fuel in it so how can i drill the required hole for the breather without getting metal filings in the fuel or will filings not affect the car as it will get caught in the filter?

RedAvon - 20/4/10 at 10:39 AM

I have the same problem and advice is not to even drill the tank....not sure but don't think I'll risk it as if it doesnt blow it will get swarf in - think people use one of those magnets on a telescopic rod to get swarf out.

Anyway- I'm going to put the breather pipe at the filler end - welded onto the pipe below the flange and use a one way valve - about 6 quid.

eddie99 - 20/4/10 at 10:40 AM

Remove fuel tank, drill hole? Wash out throughly and make sure no swarf left in tank when you put it back?

JC - 20/4/10 at 10:47 AM

I am using a Ford Fiesta set up - the tank has a 2 way breather that pushes into a rubber bush. My car is a 1996 Zetec SE model - a new rubber bush was a couple of pounds from ford, the valve should be pence from a scrappy.

As for the tank question - be very careful?!

mad4x4 - 20/4/10 at 11:23 AM

quote:
Originally posted by eddie99
Remove fuel tank, drill hole? Wash out throughly and make sure no swarf left in tank when you put it back?
#

If you are paranoid about the tank blowing, Drill it when it is FULL there will be less vapor in the tank.

If you are removing the tank to do this, fill it with water and this will push out all the vapor.

Drill it with a slow drill and lots of cutting fluid. Let the drill cut the metal rather than trying to turn the end of the drill blue (or red) by being blunt and tooooooooooo fast.

ALSO EARTH THE TANK - less likey to get a spark due to static.

omega0684 - 20/4/10 at 12:01 PM

ask and thou shalt recieve

roll over valve linky

matt_gsxr - 22/4/10 at 01:46 PM

if you have a level sensor, then unbolt that, connect the breather to the plate on the sensor and then bolt it up again.

maybe