Hello,
I want to fit a 3.4-O.D. gearbox from a serieI XKE on a
later 1978 XJ6 engine. Is it an easy task? Is there
similarities between motors?
If so, what will be required to do that?
Many thanks,
J.G.C.–
Jean G.
Qu�bec, Canada
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I’ll ask a local E & XJ owner who’s been working on things like this.–
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.
XJ6CDN wrote:
Hello,
I want to fit a 3.4-O.D. gearbox from a serieI XKE on a
later 1978 XJ6 engine. Is it an easy task? Is there
similarities between motors?If so, what will be required to do that?
//please trim quoted text to context only
In reply to a message from XJ6CDN sent Thu 11 Sep 2008:
Manual to manual is OK but you may find the selector is the wrong
length. Auto to manual is a bit more complicated, picture of the
parts required here:
http://www.almclwebpages.pwp.blueyonder.co.uk/2a.html--
The original message included these comments:
If so, what will be required to do that?
–
al mclean '93 XJS 4.0 - '84 4.2 Daimler - '84 DD6
Telford, United Kingdom
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FYI, here’s what a local E/XJ friend has to say…
"Interesting. There has never been an E-type Ser 1
3.4 engine. Early had 3.8, later had 4.2 engines.
There has never been an E-type Ser 1 gearbox with
OD.
So am not sure what we are looking at here.
If the 1978 XJ-6 engine had an automatic attached,
you will need a manual gearbox flywheel and a
pedal box with a clutch pedal plus piping and a
way to get the shift lever in the cabin. I hope the
new OD gearbox has its bellhousing. Quite a job.
If the 1978 XJ-6 was a manual, the switchover is
easier but depending on what was in there, a new
drive shaft may be in order."
Hope it helps.–
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.
XJ6CDN wrote:
Hello,
I want to fit a 3.4-O.D. gearbox from a serieI XKE on a
later 1978 XJ6 engine. Is it an easy task? Is there
similarities between motors?If so, what will be required to do that?
Many thanks,
J.G.C.
Jean G.
Qu�bec, Canada
//please trim quoted text to context only
In reply to a message from Alex Cannara sent Thu 11 Sep 2008:
Hello,
My problem is simple: I have a 1978 XJ6-4.2 engine and the
possibility to buy a gearbox advertise like that:
4 Speed manual synchromesh transmission with electric
overdrive. Fits Jaguar XK 150 or XKE Series I (without OD)
I need to know if feasible and the complexity of that swap…
Thank you for your help!–
Jean G.
Qu�bec, Canada
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In reply to a message from XJ6CDN sent Fri 12 Sep 2008:
Leaving aside the issues of plumbing and pedal boxes, the gearbox
from an XK150 is not a 4-speed synchro, it is a Moss box. There was
no manual overdrive (MOD) box ever fitted to an E-type of any
series. So there are two incorrect things right there.
The MOD box from an XK150 is different from the gearbox and OD from
an XJ - both in terms of overdrive type and size, lever position
and overall length. The XK150 MOD box is the same as that from a
3.4 XK I believe.
An XJ manual OD gearbox and bell housing are the identical length
to any other XJ box, be it auto or non-OD manual (a type mostly
fitted to the smaller engined models which didn’t make it to North
America AFAIK). The propellor shaft will bolt right up for any XJ
auto/manual swap. No issues there.
So in terms of dimensions there is no problem if it is an XJ box
which will use a 4.2 style flywheel and clutch, but you have
several serious issues if it is an XK150 box.
The XK150 box would normally use a 3.8 flywheel, starter and bell
housing. If it has no bell housing you could fit a 3.8 or 4.2 one
so long as you used flywheel, clutch, clutch release and starter to
match.
Be aware also that even if you went to all the trouble of fitting
an XK150 box you might not like the end product. The Moss box is an
acquired taste. It is one thing to crunch gears in a hairy-chested
sports car but not so nice in a suave sedan. If it is an XJ box you
should be fine.
To determine which type of box without seeing it, ask the box owner
what is stated on the small rivetted ID plate at the side of the
overdrive. If the plate says it is a ‘Compact Type A’ overdrive it
is an XJ box and you could use it. If not, walk away would be my
advice.
Pete–
The original message included these comments:
4 Speed manual synchromesh transmission with electric
overdrive. Fits Jaguar XK 150 or XKE Series I (without OD)
I need to know if feasible and the complexity of that swap…
Thank you for your help!
–
66 2+2, 68 OTS lump, 94 X300 Sovereign, 94 XJR Manual
Cambridge, United Kingdom
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Jean
The advert is a little too cryptic to avoid ambiguity. If as Peter suggests
you can confirm that it is an XJ box, then it will fit, it will be all
synchro, and the gear lever will be in the right location. You will need a
flywheel from either 4.2 or 2.8, and a starter to match the flywheel. The
other item to look for is the appropriate tunnel cover, which differs from
the manual version.
I carried out this exercise on our 74 swb 4.2 15 years ago so will be able
to help with practical suggestions, but you need first to ensure that you
are targeting the right box.
It’s worth the effort. Our 74 felt so sweet with the BW65 that I agonised
over the decision, but the change was worth every cent and every minute
expended.
George
Peter writes
"Leaving aside the issues of plumbing and pedal boxes, the gearbox
from an XK150 is not a 4-speed synchro, it is a Moss box. There was
no manual overdrive (MOD) box ever fitted to an E-type of any
series. So there are two incorrect things right there.
The MOD box from an XK150 is different from the gearbox and OD from
an XJ - both in terms of overdrive type and size, lever position
and overall length. The XK150 MOD box is the same as that from a
3.4 XK I believe.
An XJ manual OD gearbox and bell housing are the identical length
to any other XJ box, be it auto or non-OD manual (a type mostly
fitted to the smaller engined models which didn’t make it to North
America AFAIK). The propellor shaft will bolt right up for any XJ
auto/manual swap. No issues there.
So in terms of dimensions there is no problem if it is an XJ box
which will use a 4.2 style flywheel and clutch, but you have
several serious issues if it is an XK150 box…
To determine which type of box without seeing it, ask the box owner
what is stated on the small rivetted ID plate at the side of the
overdrive. If the plate says it is a ‘Compact Type A’ overdrive it
is an XJ box and you could use it. If not, walk away would be my
advice."
//please trim quoted text to context only
Hello Peter,
I am considering doing a swap of my BW DG 250 in my 1960 XK-150 to a four speed manual OD. I have an all synchro box from a 4.2 liter 1965 E-Type OTS sitting in my shop and was curious what it would take to mate that up to my 150. Any idea of the feasibility? I know at the very least I would need a new top plate to get the shifter back farther along with all the pedal box and hydraulic bits. Thank you in advance.
What body style is your 150? If it is an OTS it is very rare as they only made 72 of them.
Pat H
It’s a DHC. I’ve tried to seal up the BW three times and it keeps blowing out the intermediate speed hold bellows…