XJ XJ8 / XJR ( X308 ) 1997 - 2003

03 XJR engine/trans in another chassis?

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  #1  
Old 02-28-2016 | 08:35 AM
convincor's Avatar
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Default 03 XJR engine/trans in another chassis?

Can it be done? Of course using the ECU and trans computer.
Would the instrument cluster be needed?
Thinking as a swap for my 68 F100.
Does the trans use anything from the wheel sensors for shift points or speed?
Any input appreciated.
 
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Old 02-28-2016 | 09:19 AM
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The entire CAN buss is used by all the modules in that network.
The INSTPK is at one end and the ABS module is at the other (each one has terminating resistors).

The wheel speed sensors send info to the ABS module and that info is on the CAN buss for all the other modules.

The install is possible but you would be better off having the entire car for parts/harnesses etc.

Making frequent trips to a savage yard or finding used parts can make it more difficult.

good luck

bob
 
  #3  
Old 02-29-2016 | 12:02 AM
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It will be fun, if you like to be challanged. I'd go for a 5.0 coyote withe FMS harness.
 
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Old 02-29-2016 | 03:44 AM
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Hey there Convincor, i'll try to throw out any info that may help, which is probably not much . Like Motorcarman said, with the can bus system you would need to have all the modules connected in order to keep everything functioning correctly or at all. You would need the rear abs system incorporated or the car will shift from 1 to 2 to 3 then never shift out of 3rd gear (limp) because the rear abs works with speed and tranny speed sensors which then in turn sends the signal to shift up and down. That also means you would need to run a diff ratio that is matched to the ecu/vid block and somehow incorporate the tone rings and sensors to the hub/axle you would be running. You could either run a stock 3.07 ratio rear end or have custom programming done, otherwise limp mode. Either way the rear abs sensors have to be there. You could run the Jag IRS under the truck, lots of fab, but could work. I don't know if the front abs sensors would have to necessarily be functioning at the hubs, but they would definitely still have to be present and connected, just not necessarily at the front wheels. With the fronts not reading off the tone rings it will disable abs/trac/stability, which will be evident on the instrument cluster that will have to be transplanted and present as well. Ignition/security stuff is potentially a complex situation to overcome unless everything is directly carried over. Luckily its a cable driven gear selector, so that would be easy to route, but you still need all the electrics of the j-gate. You would also be having to hide miles of harness to make it happen, so I hope you plan on running a cap on the back to fit it all! I'm sure i'm wrong about something and missing more than 95% of what actually needs to be tended to, but what i'm getting at is it would be a "project", that is for sure
 

Last edited by greverrr; 02-29-2016 at 04:55 AM.
  #5  
Old 02-29-2016 | 05:40 AM
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The Coyote would be great, but also a lot of $$$.
Also considered a 5.4 DOHC..
If I had a complete donor XJR I would go for it, but I don't.
I've already build a FE for it so I'll probably just stick with it, but I just love the way the Jags run.. I could always swap later on..
 
  #6  
Old 02-29-2016 | 01:01 PM
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Using a standalone EFI controller (ie. MegaSquirt, BigStuff) would be the way to go on a swap of that nature. Would be pretty cool!
 
  #7  
Old 02-29-2016 | 01:47 PM
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I think it would be awesome to do a front tilting hood and have a SC Jag V8 under there. But, as greverrr brings up all the other trans issues that arise..
I have thought about the hole rear IRS. It's been done with T-bird super coupe parts. Hmm, front and rear suspension, brakes..
 

Last edited by convincor; 02-29-2016 at 02:01 PM.
  #8  
Old 02-29-2016 | 03:23 PM
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It would be sooooo badass to have the modern supercharged 32v V8 in an f100 Especially if you adapted the entire front cradle to the truck, it would be a handler too! How cool would it be to pop that hood at cruise nights?
 
  #9  
Old 02-29-2016 | 07:58 PM
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I also need to consider how far along I am already.
390 Built, C6 9" 3.50 gear with TL, Moser axles.
3" drop beams up front. Axle flip in rear. Disc front and rear.
Do I sell and start over? Or finish as is.
I do have the 02 XJ sport for the suspension donor.
Moderators feel free to move to "other vehicles" at any time.
 

Last edited by convincor; 02-29-2016 at 08:12 PM.
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