The Cal-look Lounge

Cal-look/High Performance => Pure racing => Topic started by: leec on October 02, 2014, 20:34:25 pm



Title: Fuel tank breather/roll over valve
Post by: leec 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


Title: Re: Fuel tank breather/roll over valve
Post by: Andy Sykes 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 


Title: Re: Fuel tank breather/roll over valve
Post by: Sepi 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.
(https://lh5.googleusercontent.com/-P35QgE9ZPf0/U0_pB46-PLI/AAAAAAAAZ3I/UcmbL2E7mMc/w508-h677-no/P1120735.JPG)


Title: Re: Fuel tank breather/roll over valve
Post by: richie 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


Title: Re: Fuel tank breather/roll over valve
Post by: 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!


Title: Re: Fuel tank breather/roll over valve
Post by: spanners on October 02, 2014, 22:12:44 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.


Title: Re: Fuel tank breather/roll over valve
Post by: richie on October 03, 2014, 08:47:33 am
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


Title: Re: Fuel tank breather/roll over valve
Post by: richie 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


Title: Re: Fuel tank breather/roll over valve
Post by: leec 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


Title: Re: Fuel tank breather/roll over valve
Post by: dannyboy on October 03, 2014, 22:12:31 pm
tourques do a bolt in one i fitted one to my jaz tank  search on ebay


Title: Re: Fuel tank breather/roll over valve
Post by: leec on October 07, 2014, 17:54:05 pm
Right, sorted ;D
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

(http://img.photobucket.com/albums/v304/cal63/Mobile%20Uploads/image-2.jpg) (http://smg.photobucket.com/user/cal63/media/Mobile%20Uploads/image-2.jpg.html)


Title: Re: Fuel tank breather/roll over valve
Post by: Rocket Ron 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


Title: Re: Fuel tank breather/roll over valve
Post by: leec on October 07, 2014, 21:48:20 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 :o