I need to connect the injection system of my 3.9 V8 up and am wondering if anyone knows what thread this union on the supply side of the system is? Return is dead easy there, just a push on union.

Need an adapter or a bit of the original pipe maybe???

I just cut the nut thing off and used a fuel clip to secure the injection hose. Any good?

How exactly did you cut the nut off? Its very tight.

From memory I used a Dremel with cutting disc. Just be careful not to go too far and score the pipe itself - if you get 90% of the way through the nut you should be able to break it off by twisting a flat bladed screwdriver in the slit you've cut.

Done it. Sorted, thanks.