Engine swap.95 XJR supercharged into 95 XJS.
#2
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Location: Pacific Northwest USA
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#3
#4
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Worried about the bellhousing, how?
The idea is swap in both the supercharged engine and the 4L80E transmission that goes with it. As your 1995 XJS is set up to accept the 4L80E transmission there shouldn't be a bellhousing interference issue...if that's what you were worried about
Cheers
DD
The idea is swap in both the supercharged engine and the 4L80E transmission that goes with it. As your 1995 XJS is set up to accept the 4L80E transmission there shouldn't be a bellhousing interference issue...if that's what you were worried about
Cheers
DD
#5
Worried about the bellhousing, how?
The idea is swap in both the supercharged engine and the 4L80E transmission that goes with it. As your 1995 XJS is set up to accept the 4L80E transmission there shouldn't be a bellhousing interference issue...if that's what you were worried about
Cheers
DD
The idea is swap in both the supercharged engine and the 4L80E transmission that goes with it. As your 1995 XJS is set up to accept the 4L80E transmission there shouldn't be a bellhousing interference issue...if that's what you were worried about
Cheers
DD
#6
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I don't think the ZF would be the best choice behind the supercharged engine...if that's what you were thinking. Might not be tough enough. That's why Jaguar used the GM 4L80E transmission behind the supercharged engine (and the V12).
Plus, using the 4L80E (along with the XJR engine and transmission control modules, and all the wiring) keeps the original electrical architecture largely intact. You won't have to worry about communication and compatibility issues
cheers
DD
Plus, using the 4L80E (along with the XJR engine and transmission control modules, and all the wiring) keeps the original electrical architecture largely intact. You won't have to worry about communication and compatibility issues
cheers
DD
#7
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#8
I don't think the ZF would be the best choice behind the supercharged engine...if that's what you were thinking. Might not be tough enough. That's why Jaguar used the GM 4L80E transmission behind the supercharged engine (and the V12).
Plus, using the 4L80E (along with the XJR engine and transmission control modules, and all the wiring) keeps the original electrical architecture largely intact. You won't have to worry about communication and compatibility issues
cheers
DD
Plus, using the 4L80E (along with the XJR engine and transmission control modules, and all the wiring) keeps the original electrical architecture largely intact. You won't have to worry about communication and compatibility issues
cheers
DD
Here's what he has to say in a previous post.
"I know this is a very old thread now but people might be interested to know that several DIY AJ16SC XJS conversions have been performed. I helped get one of these running myself. It was LHD. When I worked at Jaguar we actually built an AJ16 powered XJS prototype but the project never went any further. As Doug suggested the best quality conversion would use the complete powertrain from and XJR6, but you could cross your fingers and retain the ZF4HP24E gearbox. It isn't really up to the job which is why the XJR6 uses the GM Hydramatic 4L80E. However, I would accept that using the 4L80E and its TCM will make the wiring much more complicated. I would still argue that putting an AJ16SC engine in an XJS is easier than turbocharging an AJ16 NA engine or fitting a different engine that was never designed to go in an XJS."
#9
In addition to the engine, the transmission is different as is engine and transmission mounts, wiring harness, ECU's (both engine and transmission), air flow meter, air filter box, exhaust, fuel tank and pumps, shifter and shift cable, driveshaft, radiator, plus the addition of the intercooler and pump, plus the plumbing for it. There is probably more, but that's off the top of my head.
#10
In a roundabout way, I think that the ZF is at the edge of it's power/weight capabilities in the standard X300, and it wouldn't survive behind a supercharged engine if you intend to use the power. And that's the whole point of doing the conversion isn't it?
Last edited by Jagboi64; 08-14-2016 at 02:57 PM.
#11
Jimmy James 905,
If you use the XJR ecu setup then one of the challenges that you have to overcome is fooling the ecu into believing that it's still in the XJR. This is because Jaguar have programmed some of the car security into the ecu. There are ways of getting around it as some owners in the UK have done this transplant.
Go for it!
Good luck
Paul
If you use the XJR ecu setup then one of the challenges that you have to overcome is fooling the ecu into believing that it's still in the XJR. This is because Jaguar have programmed some of the car security into the ecu. There are ways of getting around it as some owners in the UK have done this transplant.
Go for it!
Good luck
Paul
#12
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ptjs1 (08-14-2016)
#13
I also believe there may be some fit issues with putting the supercharged engine in a left hand drive car. It has been done so all issues can be worked around.
Sure would be nice if someone who has done it would write up all the steps needed so those that want to do it would have a guide to help them through the process.
I have always felt that Jaguar did not offer this supercharged option on the XJS because they knew the XK8 was coming out very quickly and did not want a 4.0L XJS 6cyl. with more HP then their new V8 coming out. Would have been a very cool and highly desire able factory XJS if they had.
Sure would be nice if someone who has done it would write up all the steps needed so those that want to do it would have a guide to help them through the process.
I have always felt that Jaguar did not offer this supercharged option on the XJS because they knew the XK8 was coming out very quickly and did not want a 4.0L XJS 6cyl. with more HP then their new V8 coming out. Would have been a very cool and highly desire able factory XJS if they had.
#14
Supercharging was never going to be an option for the XJS, certainly not by the factory. All the money was going in to the development of the XJ40 which basically took nearly a couple of decades to come to fruition and then it still wasn't right when first delivered.
Lister did (twin) supercharged conversions but they cost an absolute shed load of money to develop and then buy.
Jaguar never had a forced induction engine until the XJR6.
I think that a supercharged XJS would be an absolutely fabulous car and I know that there a couple of them around but then would it still be an XJS?
Lister did (twin) supercharged conversions but they cost an absolute shed load of money to develop and then buy.
Jaguar never had a forced induction engine until the XJR6.
I think that a supercharged XJS would be an absolutely fabulous car and I know that there a couple of them around but then would it still be an XJS?
#15
For North America in 1996 it was convertibles only, I suspect that Jaguar though the convertible didn't have the rigidity for a supercharged version. Might have been packaging issues too, no place for the intercooler.
#16
If a person can put it in and make it work out of their home shop no doubt Jaguar could have done it very easily but then you have a 6 cylinder XJS that can beat the new XK8 with a V8. Would have been a very rare and sought after XJS if they had done it.
#17
I don’t know if this old thread is still going but i just found this advert in the Nertherlands for a 96 XJS-C with a AJ16 SC engine! It looks like it was originally a US car imported to the Netherlands. Looking at it photo’s of the engine bay it looks like a nice engine installation job.
https://www.autotrader.nl/auto/voert...&safemodel=xjs
https://www.autotrader.nl/auto/voert...&safemodel=xjs
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