That way is not so good for waterboxers. The design VW used flows extra
fresh cool fuel through the rails past the injectors at all times when
the engine is running and thus pushes any bubbles or what have you right
by and then up to the regulator which also acts as a tee and they exit
back harmlessly to the tank. So air is purged out of the system rather
than being trapped and pushed to the injectors. When a very hot engine
is shut off the fuel in the lines close to the head will get very hot
and can vaporize inside the lines and VW's hose system pushes that vapor
out the return line instead of through the injectors. The constant extra
flow keeps the fuel temps more constant as well.

Mark

miguel pacheco wrote:
> I like Benny's way. He's eliminated all but the necessary hoses from
> the engine bay, by moving the fuel reg to the other side of the
> firewall....That's like right there under our noses....can't see the
> forest for the trees. Of course, he sniffs lots more Vanagon dust than
> most of us, so he's got a distinct advantage. Simple and
> elegant.......
> Thanks,
> Miguel
>