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Title: Volumex and N/A Heads Post by: mick131 on August 20, 2009, 04:32:28 PM 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.. (http://i193.photobucket.com/albums/z296/mick131/nahead.jpg) 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. (http://i193.photobucket.com/albums/z296/mick131/vxhead.jpg) This would explain why the pic below shows the VX manifold pointing up towards the cam wheels (http://i193.photobucket.com/albums/z296/mick131/Image047-2.jpg) Title: Re: Volumex and N/A Heads Post by: theredx19 on September 21, 2009, 07:09:56 PM 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...
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