Fuel line sizes?

adamnreeves · Post by **adamnreeves** » Tue Jan 22, 2008 2:09 pm

My westy has 6mm i.d. fuel lines, one for supply and the other for return. Running a 4.6 stage III heads Piper 285, etc, expecting 280BHP. I have a bosch 044 fuel pump and this is whats begging the question as its inlet is 18mm and outlet 12mm.

So are 6mm lines okay. If is not a big problem I will leave until real tuning begins after the SVA!

Eliot · Post by **Eliot** » Tue Jan 22, 2008 5:08 pm

make the entry into the pump as big as possible, but i seem to recall the outlet on the bottom of the westy tank isn't that big.

adamnreeves · Post by **adamnreeves** » Tue Jan 22, 2008 5:11 pm

I haven;t measured that yet but I was thinking that would be smaller than 12mm anyway.

Eliot wrote:make the entry into the pump as big as possible, but i seem to recall the outlet on the bottom of the westy tank isn't that big.

Rev_erend · Post by **Rev_erend** » Sun Feb 03, 2008 11:04 pm

I just bought a bosch 044 and had to buy new unions to match my fuel lines.

I bought 12mm inlet and 8mm outlet.

Glencoe very very helpful :
http://www.fuelsystem.co.uk/injection.htm

dnb · Post by **dnb** » Sun Feb 03, 2008 11:38 pm

I have -6AN lines on my Griff (and 044 pump as well). They seem to work.

I don't remember exactly what the ID is in mm. Something like 7 or 8mm.

ian.stewart · Post by **ian.stewart** » Mon Feb 04, 2008 12:30 am

-6 is 6/16ths, so that equates to 3/8th,
I run 6mm feed and and the cortina fuel return which is probably not much more than 5mm, this should support an easy 300hp