Might be a ford gearbox or a Mazda depending on when it was made and shipped etc. You are right on the point when the changeover happened around 2011/12 Think you will be before the GDi variant engine so expect you do have the Duratec engine with ford g/box which has a coil pack and not coil on plug. The Duratec/Mazda box combination only lasted about a year before the GDi engine came in which has direct fuel injection not indirect. You have the best re. engine issues and the Duratec's are starting to hold higher prices than the GDi options. Yep the Duratec suffers with collecting water down the plug access tubes, number one being the worst. I fit mine using an electrical grease and I use it on the threads as well. Service them regularly and suck out any water/crap before removing the the plug. I also blow them out with an air-line after I have loosened the plug to remove debris that undoing them causes. There are lots of arguments about using grease or anti seize on plug threads but if you do, don't use copper slip as it will erode the threads in the alloy head, rather use the aluminium option., sparingly! This will effect the torque setting if you lubricate them so I carefully hand tighten them so as not to stress the threads in the head. However I would rather be careful with my plugs/head than suffer a plug seized in there!
If you have the Ford box it will be the MT-75 as fitted in some sierra cosworth cars. I have this box and love it as its so strong though the Mazda box is loved for its gear change./shift. Personally I wouldn't swap it and the ford box shouldn't have a difficult change. if yours does PM me and I'll tell you how to sort it out. You don't hear Cosworth drivers moaning! If you ever need parts ross I'm happy to help. And ship them over for you!
Last edited by sewin; 14/01/25 05:19 PM. Reason: spelling mistake
