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Fuel tank breather/roll over valve
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Topic: Fuel tank breather/roll over valve (Read 6271 times)
leec
Hero Member
Posts: 2599
Fuel tank breather/roll over valve
«
on:
October 02, 2014, 20:34:25 pm »
My oval got pulled up at scrutineering for having a fuel cap that would leaked If the worst happened and the car rolled over.
I have sealed the cap as suggested but will obviously the tank will need a new breather. What do you guys run, I've seen braided linefrom the filler neck? Also heard something about a one way valve?
Any advice would be awesome, running out of time for drag day!!
Lee
«
Last Edit: October 07, 2014, 18:00:03 pm by leec
»
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Andy Sykes
Hero Member
Posts: 1203
Re: Fuel tank breather/roll over valve
«
Reply #1 on:
October 02, 2014, 21:01:46 pm »
the one way valves work but you may still need to fit a coiled tube, as they have know way of knowing if the valve works so you may as well just fit a tube
cheers andy
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I love the haters they make me famous.
im building this not just putting parts together, they are two totally different things
Your only here once turn it up to 11
Sepi
Full Member
Posts: 102
Re: Fuel tank breather/roll over valve
«
Reply #2 on:
October 02, 2014, 21:07:29 pm »
I did this kind of system to my -59. It has the one way valve and opened filter.
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richie
Hero Member
Posts: 5687
Re: Fuel tank breather/roll over valve
«
Reply #3 on:
October 02, 2014, 21:09:12 pm »
Jo's car has a 2 piece bolt on roll over valve,
http://www.jegs.com/i/JAZ-Products/547/834-006-11/10002/-1?parentProductId=751554
just drill a hole in the filler neck, flatten that area slightly so it will seal and bolt it on, then some -6 hose to exit out underneath, on the old car I welded a -8 fitting on the tank filler neck and used the 1 piece roll over valve that then bolts on to that.
http://www.jegs.com/i/JAZ-Products/547/834-208-06/10002/-1?parentProductId=751554
That's what I use on most other stuff now, I think I got a couple of them[ -8] in stock if you are stuck but you need either need a tank fitting like this
http://www.jegs.com/i/JAZ-Products/547/832-108-11/10002/-1?parentProductId=747212
or to have the tank out to get a fitting welded on
cheers Richie
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Cars are supposed to be driven, not just talked about!!!
Good parts might be expensive but good advice is priceless
leec
Hero Member
Posts: 2599
Re: Fuel tank breather/roll over valve
«
Reply #4 on:
October 02, 2014, 21:21:00 pm »
Great, thank you guys.
Richie, the 2 piece jegs valve, do you have them in stock?
Will they act as a breather too?
I assume ou just run hose from the fitting with a loop in it to vent under the car?
Lee
Ps, pics would help my tiny mind!
«
Last Edit: October 02, 2014, 21:31:20 pm by leec
»
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spanners
Sr. Member
Posts: 286
Re: Fuel tank breather/roll over valve
«
Reply #5 on:
October 02, 2014, 22:12:44 pm »
Quote from: leec on October 02, 2014, 21:21:00 pm
Great, thank you guys.
Richie, the 2 piece jegs valve, do you have them in stock?
Will they act as a breather too?
I assume ou just run hose from the fitting with a loop in it to vent under the car?
Lee
Ps, pics would help my tiny mind!
MSA regs require a "roll over valve" in breather lines, I run double breathers with two valves venting into a breather tank, they are mounted vertically for correct function, I fear fire, more so when upside down and seeing stars, so no open tank breathers, running them into a catch/breather tank is a scruteneers delight also.
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Best regards, spanners.
richie
Hero Member
Posts: 5687
Re: Fuel tank breather/roll over valve
«
Reply #6 on:
October 03, 2014, 08:47:33 am »
Quote from: leec on October 02, 2014, 21:21:00 pm
Great, thank you guys.
Richie, the 2 piece jegs valve, do you have them in stock?
Will they act as a breather too?
I assume ou just run hose from the fitting with a loop in it to vent under the car?
Lee
Ps, pics would help my tiny mind!
Haven't got the 2 pieces one sorry, that was a one off as tank was powder coated, yes its a vent until fuel pushes against it and then closes it off, you can do as Spanners says and run hose into a catch can or just vent outside the by the beam
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Cars are supposed to be driven, not just talked about!!!
Good parts might be expensive but good advice is priceless
richie
Hero Member
Posts: 5687
Re: Fuel tank breather/roll over valve
«
Reply #7 on:
October 03, 2014, 08:49:11 am »
Oh and I am 600 miles away from car so nothing I can do about a pic at moment
cheers Richie
Logged
Cars are supposed to be driven, not just talked about!!!
Good parts might be expensive but good advice is priceless
leec
Hero Member
Posts: 2599
Re: Fuel tank breather/roll over valve
«
Reply #8 on:
October 03, 2014, 10:12:03 am »
Thanks Richie,
If you have one of the -8 ones in stock, the one requiring the fitting welding on the tank I will take one of those
Lee
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dannyboy
Hero Member
Posts: 1169
Re: Fuel tank breather/roll over valve
«
Reply #9 on:
October 03, 2014, 22:12:31 pm »
tourques do a bolt in one i fitted one to my jaz tank search on ebay
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8.77@156.8mph
O/FF 60
......
leec
Hero Member
Posts: 2599
Re: Fuel tank breather/roll over valve
«
Reply #10 on:
October 07, 2014, 17:54:05 pm »
Right, sorted
Thank you to Richie+Jo for supplying the valve super quick and big thank you to Alex Taylor for neatly welding the fitting to the Tank. A job which I couldn't watch initially!!
Lee
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Rocket Ron
Hero Member
Posts: 2861
It's old school for a reason
Re: Fuel tank breather/roll over valve
«
Reply #11 on:
October 07, 2014, 20:51:53 pm »
Looks great lee
Last time Alex welded a fitting to my tank It went off with a real bang and ballooned the tank, I'm sure I can get and extra 1/2 gallon in there now lol
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13.12 @ 101.84
Grooving out on life
You can't polish a turd but you can roll it in glitter
leec
Hero Member
Posts: 2599
Re: Fuel tank breather/roll over valve
«
Reply #12 on:
October 07, 2014, 21:48:20 pm »
Quote from: Ron Elliot on October 07, 2014, 20:51:53 pm
Looks great lee
Last time Alex welded a fitting to my tank It went off with a real bang and ballooned the tank, I'm sure I can get and extra 1/2 gallon in there now lol
We talked about your tank. When he fired the first tack I was cowering in the corner of the workshop
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