In reply to a message from PeterCrespin sent Mon 22 Aug 2011:
I was hoping you’d be amused, Pete. You could sell the
manifolds to your friends, and explain fitment details after
the sale.
It does boggle the mind. There are several threads where
that guy alludes to his upside-down manifold. I read
everything I could find about the Mark X manifold when I was
fitting mine. He mentions having the setup in his E for
something like 18 years. Later, he finally procures a
proper manifold.
I’ve seen only one Mark X manifold (my own 4.2). It
definitely slopes up. But I agree that common wisdom is
that they don’t. Perhaps there were two versions.
Common wisdom is also that they fit the XJ6. That wasn’t
true in my case, and in several others found in the
archives. The front dashpot cap was about an inch above the
bonnet. I milled the manifold faces exactly as you describe
to make it fit. Of course that doesn’t prove that it slopes
up, but I’m positive that mine did–I made quite a lot of
measurements before determining how much to mill off. It’s
now about horizontal.
You couldn’t mill more than I did to get it to slope down (I
took 0.10 inch off of the bottom of the face that mounts to
the head). You might put in a wedge–that’s in the
archives–but for fitting to an XJ, not an E.
I’ve never figured out why some folks fit these manifolds to
XJs with no problem and others have to modify. I wonder how
much engine rotation is possible by shifting left and right
after loosening the motor mounts? Some may have had their
intake side lower to begin with.–
The original message included these comments:
Some misinformation in the thread (the sedan manifolds do not slope
upwards) and some horrendous suggestions for what would surely be
the ugliest intake system imaginable. The mind boggles at an upside
down manifold, linkage up top complete with a linkage cable, and a
If it came to it on the E-type, I’d just get the manifold faces
milled at slight but opposite angles and open the stud holes a tad
to drop the carbs down and keep them horizontal.
–
Bob Wilkinson, 73 XJ6
Saint Louis, MO, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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