hi all nearly finished my 2L ZT bar from the erst manifold connecting to the head now im gonna go the way of drilling and tapping the head but need to no which ones break into the oilways etc.also what drill and tap size do i need to use??i heard its only the top row that breaks into the oilways

 

try these links , you should find the info you are after



http://homepage.ntlworld.com/l.esberger/fittinga.htm



http://www.zetecinside.com/xr2/index.htm

http://www.zetec-turbo.co.uk/

http://homepage.ntlworld.com/l.esberger/

 

you'll fuck it up if you do it yourself

give it some1 whi knows what there doing