Volumex and N/A Heads

[mick131]

Further to my last post in the Project Section, here are some pics showing the differences in the Volumex and N/A Twin Cam heads, mainly the location of the inlet studs between the middle two cylinders...

Apologies for the poor quality .

This is the 1.8 head..


This is the Volumex head. The centre inlet studs sit lower on the side of the head than the N/A one. It does though, have holes just above the studs ( just about visible ) that match the position of the studs in the head above.


This would explain why the pic below shows the VX manifold pointing up towards the cam wheels

[theredx19]

Another difference is the exhaust valves in a vx head are sodium filled due to the heat and should be changed at this stage as sodium is very corrosive...