Fuel pipes and hoses...

volospian · Post by **volospian** » Mon Nov 04, 2013 10:07 am

I'm looking at the fuel lines for the Cobra, and I'm happy that AN-6 would be enough for the engine (around 310hp) however, I just need a sanity check on the hoses, etc.

The fuel tank has 10mm OD pipe outlets. Am I right in thinking that AN-6 hose has an ID of 3/8", which equates to 0.375" which in turn converts to about 9.53mm? So I should be just about right squeezing AN-6 hose onto my 10mm outlet pipes?

Cheers,
Rich.

chodjinn · Post by **chodjinn** » Fri Nov 29, 2013 9:05 am

Not sure on the pipe sizes, I think my push-on connections at the tank are 8mm for the AN6 lines I have.

But, do you know the power limitations of AN6 lines? As in, how much bhp would a single AN6 line support, with a decent Sytec pump behind it? Reason I ask I'm thinking of putting my fuel system in the skyline now and keeping the MGB tank.

volospian · Post by **volospian** » Fri Nov 29, 2013 9:54 am

AN-6 looks a little small to fit over these 10mm outlets... It slides easily over some 8mm copper pipe, so it's a bit larger than that, but I'm not sure how much "stretch" there will be... may have to get a short AN-8 run from the tank to the first filter, and maybe connect a piece of -8 to the end of the return to upsize it to the tank inlet (bought a load of dual pipe billet "clips" and plenty of -6 pipe to keep it neat, so I don't want a full -8 return line all the way from the engine bay to the tank or I'll have to throw the billet clips and have staggered different size p clips or something...)

I have no idea about HP. By the look of it there are several people running over 500bhp on -6 lines. I'm only looking at a max of about 350, so -6 should be plenty for me.

gelmonkey · Post by **gelmonkey** » Fri Nov 29, 2013 10:15 am

Hi Rich
I have just measured some Earls -6 hose and it comes out at 8.3mm id
Now you will be able to get a bit of stretch into that but whether it will go out to 10mm is questionable.
I can cut you a small section and send it to you if that will help?
-8 I think will be way to big and you will need a reducer on the tank to drop down to the right size.

Does this help at all?

cheers
P

volospian · Post by **volospian** » Fri Nov 29, 2013 10:39 am

Cheers for the offer, but I needed to make a decision as it was holding up the build trying to find out, so I bit the bullet a week ago and ordered the stuff.

I'm not sure how I'm going to make it all work in and out of the tank at the moment, but I can at least start fitting the system from the first filter through to the regulator/rails and I'll worry about the lines from the tank to the filter and return line to tank later.

Rich.

gelmonkey · Post by **gelmonkey** » Fri Nov 29, 2013 12:50 pm

Ok
Understand, good luck with it all

P

Ian Anderson · Post by **Ian Anderson** » Fri Nov 29, 2013 12:55 pm

Hot water and fairy dishwasher fluid softens the end of the hose then you should be able to force it over (Foiry acts as a lubricant.

Ian

bigaldart · Post by **bigaldart** » Fri Nov 29, 2013 9:12 pm

#6 line will flow easily enough for any Rover V8, it will support over 7 gallons a minute fuel flow

Alan