If your talking about running arp studs in a NA engine that would be a waste of money... They don't make near enough power to blow the gasket. Even if you were going to swap the NA cam into a turbo diesel, the difference in power isn't night and day from what I understand, its more like "every little bit helps" kinda deal. Studs aren't needed untill you are trying to push some big boost.
The service literature says the head cant be milled (same thing is said for the 4 and 5 cyl heads to in the VW manuals). Thats all BS, these heads have been being milled for years with good results. Not like you can just go down to the dealer and pick up another head. Granted, if its warped to hell milling it wont help. If its off a little, you can take a few thousands off it to have a fresh surface and minimize the warpage at the gasket surface. If the cam shaft area was warped so badly to where it would be a problem for the cam, the whole head would probably look like a banana anyway and would be junk.
Jason
|