Has anyone ever tried to put a newer Jaguar engine into a Series 1
XJ6?
Specifically, has anyone tried to put in a 1994 12 cylinder jaguar
engine into a Series 1 XJ6? I prefer the more modern Jaguar 12
cylinder engine, the 70’s 12 cylinder simply has too much plumbling
to remove before you can work on it. Here is the engine on ebay for
sale:
To do this I assume you would need lots of modern electronics from
a 1994 year car, ECU, sensors, etc. However since my 1971 XJ6 has
no smog requirements this could be a little easier.
Yes, I am aware that this would be very unconventional and that
many believe I should find a junkyard XJ6 S1 engine and rebuild it,
but your comments on the modern 12 cylinder would be appreciated.– http://www.evozine.com/jag/
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
The swap does not sound at all preposterous to me and shouldn’t to
others on the list. Just a couple of thoughts for your perusal.
First, find out from which model the engine was pulled. If from a XJ-S
it will have a Marelli ignition with distributor. However if from a
XJ-12 sedan it will carry a six-pack coil nestled in the valley and NO
distributor. Having owned three of the latter engines and known many
others, I nor anyone else I have spoken to have ever known of one of
the coil packs to go bad. We won’t discuss the Marelli system. (You
know what Mom told you, something good or nothing at all!) You may
also want to obtain the matching transmission. While they have a bit
of a bad rap, it is totally undeserved. IIR correctly, it is a GM
medium duty truck transmission with Jaguar gearing and very strong.
The problem comes in when people let the transmission mounts wear out
creating excessive vertical movement of the transmission. This results
in breaking connections of the control cable running from the shifter
in the console to the transmission.
This is an exceptional package, (engine & tranny) just be sure to get
ALL the appropriate and CORRECT control units and cables.
In any of these cases you have tranmission controls as well as ECU that must
find a home. The AJ40 one above had the stuff under the passenger floormat!–
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.
evozine wrote:
Has anyone ever tried to put a newer Jaguar engine into a Series 1
XJ6?
Specifically, has anyone tried to put in a 1994 12 cylinder jaguar
engine into a Series 1 XJ6? I prefer the more modern Jaguar 12
cylinder engine, the 70’s 12 cylinder simply has too much plumbling
to remove before you can work on it. Here is the engine on ebay for
sale: http://www.evozine.com/jag/12.cylinder2.jpg
To do this I assume you would need lots of modern electronics from
a 1994 year car, ECU, sensors, etc. However since my 1971 XJ6 has
no smog requirements this could be a little easier.
Yes, I am aware that this would be very unconventional and that
many believe I should find a junkyard XJ6 S1 engine and rebuild it,
but your comments on the modern 12 cylinder would be appreciated.
In reply to a message from Earl Kiker sent Wed 13 Dec 2006:
The distributorless ignition was only fitted to X300 cars, not the
93-4 XJ40 6.0L sedans. In the UK there is such a thing as a 94 X300
(just) because we go by registration date. But in the USA I believe
you call all those examples 95 cars because they were the 95 model
year, so it sounds like a distributor-type V12 to me.
But you’re right about the desirability of the type…–
Peter Crespin 66 2+2 E-type, 74 Daimler 4.2
Cambridge, United Kingdom
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php –
In reply to a message from Peter Crespin sent Wed 13 Dec 2006:
Can one find a V12 Series 1 in the Americas? I know they’re around
in the U.K., the classifieds in Jaguar World are full of them. It might
be worth evaluating the option of just buying a car that’s already
set up, although as you say you’d lose the advantages of the HE
engine and the less complex engine bay. No doubt you’ve already
thought of this.
The other thing that springs to my mind as an obstacle would be
finding a 12-cylinder tach that’s the right size. That might prove
difficult. But it does sound like a fun project. I briefly considered
plugging a V12 into my Series 3, and I may do it yet when the
engine it’s got goes, especially if I can figure out how to get a
manual transmission behind it.
Just so happens that I have a connection for a bell housing cast to
accept virtually any transmission. It is cast in such a way that you
simply slide the tranny up to the housing, mark and drill the mounting
holes you need. The same with the block. That way, you get the exact
mounting points you need for both engine and transmission.
If you wee to put in a more modern V12, I’d go for the ones from a 95-97
XJ12, not the XJS. The reason is the engines in the sedans had
Nippondenso distributorless ignition, whereas the earlier cars (and XJS)
had Marelli ignition. From what I’ve heard the Marelli is fairly
troublesome, and Marelli in Italy has stopped making spare parts, like
distributor caps.
It’s a big job to do the swap, I think making the electronics would
would be the difficult part, but certainly doable.
I wouldn’t dismiss the 80’s era HE V12 either, as its essentially the
same as the 6 litre (with the exception of the 95-97 mentioned above),
they just hid all the wires under the nice cover. Remove that, and they
all look the same. The engine isn’t that bad to work on, although it
does look daunting at first. The advantage is everything is all on top,
there is really nothing to work on below the cam covers. If you do get
one, make sure it has the Lucas ignition, that’s very reliable once you
clean and lube the distributor. They have a history of sticking advance
weights, but a proper clean and lube will take care of that.
Craig
92 VDP
evozine wrote:>Has anyone ever tried to put a newer Jaguar engine into a Series 1
XJ6?
Specifically, has anyone tried to put in a 1994 12 cylinder jaguar
engine into a Series 1 XJ6? I prefer the more modern Jaguar 12
cylinder engine, the 70’s 12 cylinder simply has too much plumbling
to remove before you can work on it.
I second Craig’s suggestion: why not just look for a late Series III
V12? Super cars. They are all fuel-injected and all have the Lucas
ignition (which is trouble-free except for the easily replaceable GM
ignition module), right up to 1992
It’s a big job to do the swap, I think making the electronics would
would be the difficult part, but certainly doable.
I wouldn’t dismiss the 80’s era HE V12 either, as its essentially the
same as the 6 litre (with the exception of the 95-97 mentioned above),
they just hid all the wires under the nice cover. Remove that, and they
all look the same. The engine isn’t that bad to work on, although it
does look daunting at first. The advantage is everything is all on top,
there is really nothing to work on below the cam covers. If you do get
one, make sure it has the Lucas ignition, that’s very reliable once you
clean and lube the distributor. They have a history of sticking advance
weights, but a proper clean and lube will take care of that.
