17-06-2015, 09:51 AM
If you're doing anything like changing cams, manifolds, heads etc - there is basically NO point in doing it unless you're adjusting the maps afterwards, it'll change it so much you're not going to see the benefits.
The only way to do it is to put the J4RS head complete with cams and manifolds, injectors, fuel rail and original FPR on the XU7 bottom end and plasticine it to make sure you've got enough clearance for valves. As said by Welshpug, you must use the gasket from the 83mm bore engines i.e. XU5/7/9.
Then it must be mapped accordingly - doing anything else is just pissing in the wind.
The only way to do it is to put the J4RS head complete with cams and manifolds, injectors, fuel rail and original FPR on the XU7 bottom end and plasticine it to make sure you've got enough clearance for valves. As said by Welshpug, you must use the gasket from the 83mm bore engines i.e. XU5/7/9.
Then it must be mapped accordingly - doing anything else is just pissing in the wind.
