keybaud Posted July 16, 2012 Share Posted July 16, 2012 Do the Caterham aero fuel caps have a built-in vent? Edited by - keybaud on 16 Jul 2012 20:58:51 Link to comment Share on other sites More sharing options...
Shad Posted July 16, 2012 Share Posted July 16, 2012 No but the filler pipe does Link to comment Share on other sites More sharing options...
keybaud Posted July 16, 2012 Author Share Posted July 16, 2012 Quoting Shad: No but the filler pipe does Yours might, but mine won't, hence the question. 😬 Edited by - keybaud on 16 Jul 2012 22:25:52 Link to comment Share on other sites More sharing options...
elie boone Posted July 17, 2012 Share Posted July 17, 2012 Not 100% sure with the Caterham one's, if you take it apart you'll find a O ring on the barrel, if you take this off than you have a vented fuel cap Link to comment Share on other sites More sharing options...
Graham D Posted July 19, 2012 Share Posted July 19, 2012 If your car has fuel injection the filler cap won’t have a breather. You will more than likely have one of those weird carbon canister gadgets under the bonnet. Quite a few people (myself included) have removed the canister and fitted a conventional breather pipe as shown here. Graham Edited by - Graham D on 19 Jul 2012 16:23:25 Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted July 19, 2012 Share Posted July 19, 2012 This is how my car came. Link to comment Share on other sites More sharing options...
keybaud Posted July 19, 2012 Author Share Posted July 19, 2012 I don't have a filler cap at all. My car is an ex-Vauxhall Challenge Caterham, which all had rubber bag tanks with the fuel cap on top of the tank inside the boot. I'm about to fit a custom made tank from Andy Wiltshire, which has a 57mm neck and no secondary vent/breather/overflow. This means that I need a cap that can breath or I'll have to fit a breather to the filler hose or to the tank. Link to comment Share on other sites More sharing options...
Paul Deslandes Posted July 20, 2012 Share Posted July 20, 2012 I used a Newton cap that fitted to the original carb elephant's trunk pipe. This needs a small (2 - 3mm) hole drilled in it, otherwise you eventually get fuel starvation due to the vacuum. The caps are available from Think Automotive. One advantage is that there is no problem filling from modern pumps, unlike the CC venting system which is apparently a PITA. Edited to add that I drilled the hole under the lift-up locking tab Edited by - Paul Deslandes on 20 Jul 2012 11:45:53 Link to comment Share on other sites More sharing options...
Myles Posted July 20, 2012 Share Posted July 20, 2012 Keybaud - as an aside, is the new tank a conventional ali construction, or another bag-tank? I want to replace the 25litre tank in one of my sevens (the BEC Westie) with a long-range touring tank and it seems the best route is to send the current one off to be used as the pattern for a taller version (have asked around about having the current one modified, but you get a better reception talking to a Thesp about Macbeth...! 😬) So I'm looking for someone who could do the job... Link to comment Share on other sites More sharing options...
keybaud Posted August 1, 2012 Author Share Posted August 1, 2012 Quoting Myles: Keybaud - as an aside, is the new tank a conventional ali construction, or another bag-tank? I want to replace the 25litre tank in one of my sevens (the BEC Westie) with a long-range touring tank and it seems the best route is to send the current one off to be used as the pattern for a taller version (have asked around about having the current one modified, but you get a better reception talking to a Thesp about Macbeth...! 😬) So I'm looking for someone who could do the job... Sorry for the delay in replying. My tank was made by Andy Wiltshire. He is very good and mine was built to the space available within my chassis, which gave me 40l of fuel without having to raise my boot floor. I'm sure he could do a good job for you. Link to comment Share on other sites More sharing options...
DaveMorris Posted August 2, 2012 Share Posted August 2, 2012 Andy is also making a new, oversize, tank for me. Basically - call the guy, discuss what you want, he will make it for you, and at a reasonable price. Dave Link to comment Share on other sites More sharing options...
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