AJ26 throttle body disassembly/reassembly for boring
#1
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Does anyone here have any familiarity with disassembling/reassembling the throttle body on an AJ26 engine?
I want to bore my throttle body DIY, but am more worried about taking it apart and putting it back together. Before I just wing it I'm hoping someone here has possible blazed this trail before.
I want to bore my throttle body DIY, but am more worried about taking it apart and putting it back together. Before I just wing it I'm hoping someone here has possible blazed this trail before.
#2
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https://www.jaguarforums.com/forum/x...ncerns-159443/
No pictures but a description. There’s some useful information.
No pictures but a description. There’s some useful information.
#3
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https://www.jaguarforums.com/forum/x...ncerns-159443/
No pictures but a description. There’s some useful information.
No pictures but a description. There’s some useful information.
#4
#5
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I did see in another thread that someone actually made an entirely new housing that was a much larger ID. Unfortunately the ECU didn't like it and I think that was the end of it. I have seen 82.5mm thrown around in threads discussing the service Maxbore used to provide. I will probably use that number as an upper limit to be conservative. Whatever I do I need the thing to work lol, so I don't want to to nuts.
Anyways, from there you just need to make a new butterfly plate which can be designed and machined pretty easily with a CAD program.
I don't see why this approach wouldn't work for an AJ27 throttle body as long as it can be disassembled completely in a similar manner. Unfortunately, I do not have enough access to the machines to do more of these than my own, but if successful I will document the process fully and it should be fairly easy to replicate.
#6
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If I’m not mistaken, the 82.5mm TB’s you are pertaining to is for 4.2 (later V8) engines?? Did you read about this in the X100 or the X308 section?
Just a bit of information in case you didn’t know.
USA SPEC:
1997 XK8 AJ26
1998 XK8 AJ26
1999 XK8 AJ27
1998 XJ8 AJ26
1998 XJR AJ26S
1999 XJ8 AJ27
1999 XJR AJ26S (I believe the second half of the 99’ XJR went to the AJ27S.
The AJ26 and the AJ27 do not have the same TB and cannot be interchangeable. There are similarities between the two but that’s it. The AJ26/27/S TB’s have no resemblance to any other Jag TB.
Just a bit of information in case you didn’t know.
USA SPEC:
1997 XK8 AJ26
1998 XK8 AJ26
1999 XK8 AJ27
1998 XJ8 AJ26
1998 XJR AJ26S
1999 XJ8 AJ27
1999 XJR AJ26S (I believe the second half of the 99’ XJR went to the AJ27S.
The AJ26 and the AJ27 do not have the same TB and cannot be interchangeable. There are similarities between the two but that’s it. The AJ26/27/S TB’s have no resemblance to any other Jag TB.
Last edited by Addicted2boost; 06-14-2024 at 05:26 PM.
#7
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#8
![Default](/forum/images/icons/icon1.gif)
If I’m not mistaken, the 82.5mm TB’s you are pertaining to is for 4.2 (later V8) engines?? Did you read about this in the X100 or the X308 section?
Just a bit of information in case you didn’t know.
USA SPEC:
1997 XK8 AJ26
1998 XK8 AJ26
1999 XK8 AJ27
1998 XJ8 AJ26
1998 XJR AJ26S
1999 XJ8 AJ27
1999 XJR AJ26S (I believe the second half of the 99’ XJR went to the AJ27S.
The AJ26 and the AJ27 do not have the same TB and cannot be interchangeable. There are similarities between the two but that’s it. The AJ26/27/S TB’s have no resemblance to any other Jag TB.
Just a bit of information in case you didn’t know.
USA SPEC:
1997 XK8 AJ26
1998 XK8 AJ26
1999 XK8 AJ27
1998 XJ8 AJ26
1998 XJR AJ26S
1999 XJ8 AJ27
1999 XJR AJ26S (I believe the second half of the 99’ XJR went to the AJ27S.
The AJ26 and the AJ27 do not have the same TB and cannot be interchangeable. There are similarities between the two but that’s it. The AJ26/27/S TB’s have no resemblance to any other Jag TB.
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