The purpose of these pictures is to illustrate
where identifying markings are on the XK engine. I apologize that the example
used here is not from an XK, but is from a '64 3.8 S-type. I believe that
there are enough similarities that the pictures are still relative and
should be able to serve as a point of reference in our e-mail discussions.
If anyone has pictures of his/her engine I would be glad to add them to
this page.
Head Markings
| Front of head showing serial number. This should match the serial number
stamped on the block, '7B50561-9', just above the oil filter (see block
pictures below). The '7B' identifies it as coming from an S-type and the
'-9' confirms 9:1 pistons. Pay little attention to the colors here. The
photo's were not color corrected and also, they will vary depending on
your monitor and/or printer. |
Click on picture for full size view
Front of Head w/Serial Number
|
| This head is a 3.8 'B' head and painted medium metallic blue. Not all
'B' heads were blue. There have been several reports of 3.4 'B' heads with
'duck egg green'. On the rear of the head is a boss and stamped on the
boss on this head is 'HH65.' John
Elmgreen would like to know what number is stamped on yours. He is
trying to correlate these numbers with engine numbers. There is also a
small '2' which was cast and not stamped on the head. Is this in the same
location as the 'C' mark on some 'C' heads? |
Click on picture for full size view
Head - Top View
|
| Two markings. On the top surface near the rear is a boss. Clearly stamped
on this boss is 'HH65.' Again I don't know the significance. On the rear
surface is the stamping '220 JAG.' This font is very small by the way and
difficult to see. |
Click on picture for full size view
Head - Rear View
|
| Bottom of head showing casting marks. The numbers on the top preceded
with 'C' I presume are part numbers. I don't know exactly why there would
be two of them. I have no guess as to the meaning of the other numbers.
The '2' on the lower left is similar to the '2' on the top of the head.
Next to the '2' is the logo made up of a Y on top of a W (similar to the
familiar VW logo). I presume this is the logo of West Yorkshsire Foundry
mentioned by John Elmgreen from Viart's book. |
Click on picture for full size view
Bottom of Head
|
| Left (exhaust) side of head. I painted this area because there was
a significant amount of the original paint there. There were no traces
of paint on the right (intake) side. This may be due to the size of the
areas. The right side is small - the distance between the edge of the exhaust
manifold and the cam cover edge (1-1/2") is much greater than the
distance between the intake manifold and the cam cover edge (3/8").
Keep in mind this is from an S-type. I do not know if all XK heads were
painted similarly. |
Click on picture for full size view
Head - Left Side
|
|
Some other curious markings.
- Cast 'i' below breather hole.
- 230 JAG stamped on two head bolt landings.
- '26' and '12' on left side of head. Quality control mark?
- T7 stamped on left side of head. Quality control mark?
|
|
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