Mark is right, sorry, this picture with the reg. is a test we did for late
Subaru engine conversion . I was just trying to show the grommet shape.

Ben

On Sat, 10 Apr 2010 15:46:12 -0700, mark drillock <mdrillock@COX.NET> wrote:

>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
>
>