I have been putting my fuel system together and today I tried to install my KG primary fuel rail and my precision injectors and it doesn’t seem to fit right.
The injectors go all the way down until the belly of the injector sits on the block, once I bolt down the fuel rail it snugs the injectors down to the point when I can turn them "injector having play" plus the top intake hits the primary fuel rail "not by much but it hits”. Is this normal?

 

Why don't you ask Keith @ KG and see what he says?

http://kgparts.com/forums/forums.php

 

i seem to remember there being a thread that said you need to grind down the area that the primary rail bolts down on by 1/8 inch or so...id ask kieth first though..and be sure to post what the problem was so i dotn have to call him for the same problem...if i ever get to put my car together