So good news, fuel pump is ok (for now) Turns out the Rb20DET is back to front when it comes to running fuel lines. The feed from tank comes out the filter and into the rear fuel reg first, then out the front one and back to the tank. Having attached these backwards this caused the no fuel issue. Thanks to my mate for checking on his RB20 and letting me know. So now she runs, idles and revs. Havent run it to long as i dont have a cluster so not sure on water temp yet. So that is the next thing on my to get list. But seems to idle fine, no strange knocks, lifters are slightly noisy but its a brand spanking new head so expect it to settle donw a little when run in. Got a vid so work out how to get off my iphone and onto forum for yo guys.
Merry xmas and ill be updating again in the new year