[E-Type] Jaguar logic?

I am not an engineer or a mechanic, but I have taken a lot of
things apart over my lifetime and put them back together with no
extra parts left over. So when I take something apart I believe
there is always a logical reason as to why something is made as it
is. Having a manufacturing background, I understand there a reasons
in the manufacturing process things are made as they are.
Well as stated in prior posts, my head of my 4.2 series 2 is off,
am waiting for parts, head gassket, studs nuts washers etc. Of the
14 head bolts there are 4 part #s 4 short stud at each end of
block with dowels, 6 long studs. 3 longer studs for lift hooks and
one more longer stud for hook with dowel, that cost twice as much.
Now I understand that the four outer studs with dowels are used to
position the head correctly on the block, but why the heck do they
need this one oddball stud ? This stud sit less than 4’’ from outer
doweled stud,and the hole is drilled larger at top of block, I
could understand if the had 2 doweled studs in the center of block,
I don’t understand the logical reason.

Also I noticed that 4 of the combustion chambers of head do not
sit directly over pistons, they are off-set, is this a carry over
from the 3.8?

Glenn Wior
70 E–
melloyello
evansville indiana, United States
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In reply to a message from melloyello sent Mon 26 Jun 2006:

Glenn,
Don’t know about the studs, but the 4.2 head is identical to
the 3.8 head, with the chambers evenly spaced. The block, however,
differs from the 3.8 block in that the cylinders are not evenly
spaced, as they are ‘‘siamesed’’ in pairs to make room for the bigger
bores will still providing adequate coolant flow.–
Ray Livingston - '64 OTS Santa Cruz, CA
Santa Cruz, CA, United States
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In reply to a message from melloyello sent Mon 26 Jun 2006:

To understand the decision-making process, follow Jaguar’s
organizational chart as depicted by the lines on the top of a V12
engine.–
Uncle John L with a '72 OTS
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