Crossflow Fuel System

[pnwrs2000]

Ok, I've now got myself a Facet silver top electric fuel pump and an 85mm filter king regulator. Is the below how you would fit it ?

 

-8 braided hose from tank to pump

-8 braided hose from pump to filter

-6 braided hose from filter to existing metal fuel pipe (or should this be -8 too ?)

-6 (or -8 ?) from the other end of the existing metal fuel pipe to the carb

 

Cheers in advance

[pnwrs2000]

Ooo also, if you got any pics of your installs that would be great. Cheers

[pnwrs2000]

Is there anybody out there ?

[mk2xflow]

nope weve all left the country , turn the lights off when you leave

[Tom E Cropp]

-8s Proberly a bit big I used -6 throughout my fuel system, and personally if you are investing In that much aeroquip you might as well get rid of the original line and fit new throughout

[pnwrs2000]

Ok cheers Tom.

 

There wouldn't actually be too much aeroquip really - probably about 1.0m or so ?

 

What actually is the difference of -6 to -8 ? Is -8 a pipe with an 8mm I.D or is that far too simple ?

[dalmarshall]

I think -6 is 8 mm. Check torques UK, they're a big supplier of all hose and fittings

[mk2 matt]

don't use braided pipe 

we are going to e10 fuel next year if the eu gets its way. e5 that we use at the mo is bad enough it rots anything and every thing, god knows what e10 will do

if you use braided pipe you cannot see the condition of the pipe inside it. you will only know there was a problem when your car is a smouldering wreck at the side of the road 

and don't be fooled in to thinking if its made for fuel lines its ok its not

check out what they say on the rallyesportescorts or tr register sights  

[dalmarshall]

don't use braided pipe we are going to e10 fuel next year if the eu gets its way. e5 that we use at the mo is bad enough it rots anything and every thing, god knows what e10 will doif you use braided pipe you cannot see the condition of the pipe inside it. you will only know there was a problem when your car is a smouldering wreck at the side of the road and don't be fooled in to thinking if its made for fuel lines its ok its notcheck out what they say on the rallyesportescorts or tr register sights

 

So would the push on rubber aeroquip hose be better than the braided. I have also been told that the bend radius on the braided isn't as good as rubber.

[pnwrs2000]

Hang on then cos you've got me confused now. Easy I know but....

 

The hose I was thinking about was a stainless steel braided rubber pipe for carb pressure rather than injection. I suppose this isnt actually a braided hose, just a strengthened rubber hose ???

 

Surely this type of stuff is fine isn't it ?

[dalmarshall]

Each will have their own opinion based on what they're using I guess. I'm sure many people use braided with no problem and will therefore recommend it. Torques uk also do an aeroquip hose that is not braided. I am also replying all my fuel lines with pump and regulator/filter etc and this company seems to be the popular choice. Check out their ebay shop. So far I have figured that stainless braided will kink if it is bent too much. Some say the braid itself can pierce or damage the pipe, others say it protects it etc.

I so far have concluded that a non braided pipe may be better due to the better bend radius and ease of inspection as mk2 matt says. 8 mm I'd is the size needed. Check the size of the tails that come with your fuel pump though. Some are supplied with 6mm tails

[classicwhitey]

i seem to remember reading about teflon coated braided fuel lines that arnt effected like rubber is by the fuel. probably cost a bit more though but worth looking in to.........

[mk2 matt]

the problem is ethanol

at the moment we have 5% in the fuel we buy [e5] if the eu get there way it will go up to 10% [e10]

its bad news for the classic car fan as it eats everything except plastic. some people say it will even eat your carb as it will have alloy,steel,rubber, you name it it eats it

over the last 2 or 3 years there have been a few cars catch fire due to fuel leaks, the owners of said cars have said the fuel lines were new and made for unleaded fuel

but they still perished. the word is ethanol is to blame, and its only at 5% at the moment

so in conclusion if you use braided lines you cannot see what is going on under the braid, where as if you use normal fuel lines you can check them periodically and if they start to deteriorate you can change them before they start to leak  

[katana]

Not wishing to be picky but there are plenty of ALCOHOL safe rubber fuel hoses that can be used - anything rated for Methanol will be ok.

 

As no one to date has managed to make an entirely plastic high pressure injection pump, I doubt very much the claims of Ethanol 'eating through' steel and copper

or the world car makers will be getting VERY twitchy ring pieces with the 100's of millions of EFI pumps and injectors in use!

 

Teflon hoses are just that TEFLON with an overbraid for protection - exactly the same as those used for brake lines - just bigger bore.

 

And if the rubber is being degraded from the inside out - it doesn't make any difference if they are plain, cotton braided or steel braided,

you won't actually see the damage till they start leaking!

[Tom E Cropp]

yes -6 hose is 5/16 or 8mm, I would prefer to use aeroquip over standard fuel hose and jubille clips, look on any race car and everything will be in aeroquip with all kinds of different high octane fuels running through them, and as said above the fuel will rot the pipe from the inside out so either way you wont know. personally ive never had a problem with aeroquip 

[pnwrs2000]

Ok cheers everyone