Just a quick one - is there a guide anywhere on removing the intake manifolds on the V12?
I'm sure I remember reading about an easier method of pulling off both halves off as one unit but I can't find the link now.
I'm cleaning out the Vee, replacing gaskets, & replacing fuel injector hoses.

 

• Remove air box covers
• disconnect crank breather pipe from B bank air cleaner
• Undo fuel supply and return pipes from where they first join to the manifolds
• disconnect throttle rods
• unplug injector loom
• Undo brake servo vac connection to A bank, pull off vac connectors from end of A bank
• Pull off vac connectors to cruise control and advance/return gizmos
• If Lucas disconnect amplifier plugs/leads
• undo AAV pipe from top of AAV
• undo the flexible from the middle of the crosspipe that goes down the gearbox top. String it first as if you drop it down there, it is impossible to get it back, engine in car!
• undo large vac feed pipe to cruise bellows (either from under A bank throttle body, or the other end)
• I think that is it, but anything else still there undo
• If you have a fuel cooler, you will have to undo it or degas the aircon
• Undo CAREFULLY the 24 manifold securing nuts
• with a friend lift off the lot as a unit (see pic below)
• IMMEDIATELY stuff rags into the inlet tracts in the head before doing anything else at all!

 

Add to that:

BEFORE you lift anything, COUNT the nuts and washers etc, and store them at least 3mtrs from the engine bay.

If the count is odd, do it again, then with clean spectacles, look around, and remove anything remotely free that could find its way inside that engine.

Those 12 Inlet holes are like a HUGE magnet, so be BLOODY careful with the preparation.

Beer comes when the 12 holes are stuffed with rags.

 

Nice one - thanks both. Seems fairly straight forward so I look forward to it taking me 2 weeks.

 

Greg,
Do you know what that large pipe is that tee's off downwards from the middle of the balance pipe, & disappears off somewhere in the bulkhead?

 

Yes, I forgot to mention it has to be undone too (just fixed the post above!). It gives the vac signal to the ECU in the boot via a long steel pipe under the car. Put string on the flexible joined to the balance pipe and then undo the worm-drive clip and ease the pipe off the spigot on the crosspipe. If you drop that pipe down behind the gearbox it is an engine out job to get it back!

 

oooooooh yes... Been there... Fought the war getting a washer out of a cylinder...

 

Great post, like Asdrewq this could be a good job to do while sitting at home doing jack for a couple of weeks.
We are in to week 2 of 4, and there is talk about lengthening it!

While the manifolds are off, would it not be wise to do the cam cover gaskets? Mine leak.
And the 2 oil senders?
Oh and the plugs and leads....
Any thing else... half seals..

I need to start buying some parts........

 

Well I decided to take them off individually each side as it was just too unwieldy as an assembly - not too difficult a job to remove the injector rail first though. Just have to watch for all those tiny nuts/washers! Some of them came out as a nut/stud combo from the inlet manifold.

The manifold nuts themselves were no issue.

Biggest problem I had - the amount of crap - wiring & hoses - intertwined as a rats nest under the manifolds to the rear which all hung up on the wiring loom that goes to the bulkhead. Wiring has to be the one thing that Jaguar were the absolute worse at! Hope I can recall where it all goes.

Oh I forgot about the throttle plate springs too.