Rb25 De Neo Head/rb25 Det Neo Head

[StevenCJR31]

Hi gents, exploring different options with my 25/30 and have decided to use a R34 NEO head, can anyone tell me if the NA head is the same (stud patterns on inlet/exhaust cams etc?) as the turbo head? reason for asking is that the NA motors are heaps cheaper than the turbo motors

[_x_FiReStOrM_x_]

Stud patterns for manifolds will be the same; intake cam same but exhaust cam slightly different (in lift, i 'think'). I can't tell you about valve sizing differences or combustion chambers though sorry. Somebody should know for sure though.

[StevenCJR31]

Stud patterns for manifolds will be the same; intake cam same but exhaust cam slightly different (in lift, i 'think'). I can't tell you about valve sizing differences or combustion chambers though sorry. Somebody should know for sure though.

thanks mate , thats a good start, will contact an engine importer and see if they can give me more info

[kitto]

Fairly sure intake ports are different. Intake manifolds are different, unsure about stud pattern.