11-17-2007
OK, the stuck heads have been dealt with, so back to the regularly scheduled programming. I posted that adventure in the 400 section if anyone is interested.
http://www.ferrarichat.com/forum/sho...#post137233239Now, it turns out the TR heads are a perfect fit on the 400 block except for the heads studs, the oil feed, the oil returns, the cam drive and possible some of the water passages……I need to do a little thinking to decide just how pig-headed I’m prepared to be with these heads.
The top row os studs is right. The end studs look like a 1mm mis-fit, but that I could fix by opening up the holes in the heads, I’m sure there is enough metal to not have any problem.
The real problem is the bottom row of studs is off 2mm by the look of it. There isn’t an extra 2mm in the head to move the holes I don’t think and I’m not willing to try and find out. There is material in the block, so I could plug the existing holes and punch a new hole where I want it. The other option the comes to mind is to make 1mm eccentric studs then open the holes in the head 1mm. That would solve the problem with the end studs too, but eccentric studs would need to be positioned in the correct orientation them pinned or set-screwed to keep them there.
I need to finish the disassembly on the block and see if the pressure oil feeds are fixable with major problems….it might be as simple as re-drilling and plugging the old holes.
I need to think about this