hey I've just swapped the head on my old mans 4k, the car idles but if u go anything over 2000rpm or so it dies. Just wondering if anyone knew why?? could it just be the points or something?

have you tried checking the basic things like timing, points, dwell and compression??

you might want to try replacing the points and condensor if theyre old just to be safe

 

timing should be around

8 degrees BTDC on 91 octane

Once you've sorted the electrics like points gap, timing, (and tappets too) then check the carb for leanng out.

 

Let us know what it was if you sort it, it will help others...