paulmex

Hi All
I'm on with a mk2 YB Install and My fuel rail/reg pipes are quite small ?


I was intending to use 8mm fuel pipe for feed and return !
Are there different fuel rails with slightly bigger pipes I'm sure I used 8mm pipe on another YB conversion I did ?
Thanks Paul

ajamesc

That's massive pipe! Most use -6! Mine is -6 return and -8 feed and that's for 650bhp

paulmex

Thanks for reply , Are both your rail ends the same size like mine ? And If they are how do you reduce it to -6 for the return ?
I've a blank canvas so can use anything to fit my rail within reason
Cheers paul

ajamesc

My rail is modded to centre feed which is -8 iver end is a -6 fuel return. I'm sure -6 is a little larger or the same as standard

paulmex

Thanks again , mines only 300bhp so I might be better off using -6 for both on mine and keeping it simple ,
I would only need to change my tank return as that's -8 at the moment ,
One more thing any idea why someone would go to the trouble of welding the 2 halfs of the inlet together ????




I've bought a replacement one, But I wonder how much boost someone ran to require welding it

ajamesc

Maybe they had an air leak and couldn't be arsed to buy a gasket lol is a little odd!

paulmex

Id not thought of that one wish I could weld alloy as good as them tho

stevieturbo

You do realise -6 is 3/8" ? ie 10mm ?

The metal fittings will be slightly smaller, but that is the ID of the flexible hoses.

A far cry from 6mm that is used for the factory 8mm OD hard nylon line to press over.

ajamesc

as I say above I'm not sure if -6 is the same or larger than standard size but more than enough for most people's needs on a yb

stevieturbo

I am sure, -6 is bigger then the OEM pipe/fittings, which is why people upgrade to it.

ajamesc

A fair few up grade as they like the nice shiny aero quip bits lol

paulmex

That's usually why I do it
Got another question to keep you fellas busy ? I've ditched the welded inlet and painted a old 2wd saph one I had , only to find the front mount of the rail doesn't line up with the lug on the inlet


So am I right in thinking I really need a 2wd rail to match my inlet and I'm guessing my original was off a 4wd or even a escort ?
I can make up a bracket to hold the rail as it will line up with one of the other bolts so it's not a big problem really ! Just another job that takes twice as long as a thought

ajamesc

That's odd maybe that answers the why it's been welded mystery.

stevieturbo

2wd and 4wd rails are different, so presumably intake where they mount is different too.


As for the welding, it does seem a strange one.

paulmex

Cheers for that , will keep my eye open on eBay