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XJ40 Turbodiesel

BiTurbo228
Posts: 54
Joined: Wed Jul 09, 2014 10:52 am

Re: XJ40 Turbodiesel

Postby BiTurbo228 » Mon May 18, 2020 2:17 pm

Ah those! I did check them and they turned, but were tight. Will add it to the list.

Next on the list though, the front driver's sill.

77.jpg


Bit crustier than the others!

78.jpg

79.jpg


Had to adapt my channel-making method as this stretch was too long to fit a screwdriver down. Think this used to be a tent peg, but it's now doing stirling duty as a form.

80.jpg


Worked though so all patched up :)

81.jpg
Last edited by BiTurbo228 on Mon May 18, 2020 2:19 pm, edited 1 time in total.
'92 XJ40 - currently turbodiesel-swapping
'87 X1/9 Turbo
'74 Spitfire 6
'98 MGF VVC
'90 Alfa 75 24v
'92 BX TZD

BiTurbo228
Posts: 54
Joined: Wed Jul 09, 2014 10:52 am

Re: XJ40 Turbodiesel

Postby BiTurbo228 » Mon May 18, 2020 2:18 pm

Also, I think I've found out why they seem to go in this particular place. On the inside of the channel it's seam-sealed quite nicely. However, on the outside there's no seam-sealant which would allow water to capillary-action up behind the channel and rot out around the spot welds.

82.jpg

83.jpg


Definitely worth seam-sealing to protect against rust ingress. Will be doing that on all of them, and all the way around just to stop water getting in anywhere :)

I've also sorted the handbrake cables as those were shot. I think the Haynes is on an early car as it's missing a couple of steps (including taking the handbrake mechanism apart). Still, one more bit sorted :)
'92 XJ40 - currently turbodiesel-swapping
'87 X1/9 Turbo
'74 Spitfire 6
'98 MGF VVC
'90 Alfa 75 24v
'92 BX TZD

naki_k
Super Moderator
Posts: 29104
Joined: Sun Feb 21, 2010 9:25 pm
Location: Kirton, nr Boston, Lincolnshire

Re: XJ40 Turbodiesel

Postby naki_k » Tue May 19, 2020 11:08 am

Good progress. I think most people would have been struggling with this amount of welding, let alone the TD conversion.
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6 x2
93 6.0 XJ81 XJ12
94 4.0 XJR
94 4.0 Daimler
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

BiTurbo228
Posts: 54
Joined: Wed Jul 09, 2014 10:52 am

Re: XJ40 Turbodiesel

Postby BiTurbo228 » Tue May 19, 2020 2:39 pm

Thanks man :) yeah it is a bit intimidating, especially with convoluted panels and bits. However, if you just get stuck in and break things down into manageable chunks it's a lot simpler than it first appears.

It helps to have some practice though. Cut my teeth on turning a rusty Spitfire into a patchwork quilt ;)

Spit6.jpg


If anyone's interested I've got a thread over on Retro Rides for the Spitfire (which is a big project, turning it into a unibody), my X1/9 turbo which I put through a hedge in Wales (and later fixed), and the Jag updates I've been doing here (plus some other bits and pieces) :)

Bit of bravery, a good attitude towards getting the clag off and the metal clean, and a bit of practice is all there is to MIG welding ;)
'92 XJ40 - currently turbodiesel-swapping
'87 X1/9 Turbo
'74 Spitfire 6
'98 MGF VVC
'90 Alfa 75 24v
'92 BX TZD

naki_k
Super Moderator
Posts: 29104
Joined: Sun Feb 21, 2010 9:25 pm
Location: Kirton, nr Boston, Lincolnshire

Re: XJ40 Turbodiesel

Postby naki_k » Tue May 19, 2020 6:29 pm

Wow, that’s some serious work there. I take it whole floors are not available for those then?

The jag must seem very solid comparatively.
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6 x2
93 6.0 XJ81 XJ12
94 4.0 XJR
94 4.0 Daimler
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

BiTurbo228
Posts: 54
Joined: Wed Jul 09, 2014 10:52 am

Re: XJ40 Turbodiesel

Postby BiTurbo228 » Thu May 21, 2020 10:22 pm

Thanks man! They do whole floor pressings, but at the time I was a broke student and I'm not sure how well those particular panels fit (half the panel shape, half the fact that most Spit bodyshells aren't straight anymore).

But yes, the Jag is refreshingly solid compared to that!
'92 XJ40 - currently turbodiesel-swapping
'87 X1/9 Turbo
'74 Spitfire 6
'98 MGF VVC
'90 Alfa 75 24v
'92 BX TZD

BiTurbo228
Posts: 54
Joined: Wed Jul 09, 2014 10:52 am

Re: XJ40 Turbodiesel

Postby BiTurbo228 » Thu May 21, 2020 10:30 pm

Oh, while I'm down at the girlfriend's helping out (away from the Jag) I've been doing a fair bit of research trying to plan things out for when I can make some more progress. Mainly it's been trying to work out what needs doing on the Alfa 75, but I came across a few threads of 'common modifications' for those.

Is there something on here about a list of common modifications for XJ40s? There might well be, but my search-fu is letting me down.

I expect I've already found a few of them, with the cross-braced rear subframe mount, polybushes and sorting a rear ARB. I've come across some threads about X308 vented rears as well which is on the long-term to-do list. There's other bits I know like the weak doorhandles on early cars, but mine being late they should be of the stronger variety (not that that's stopped me from hitting them with some lithium grease spray which has helped them a lot!).

Anything other little problems people have common solutions for?
'92 XJ40 - currently turbodiesel-swapping
'87 X1/9 Turbo
'74 Spitfire 6
'98 MGF VVC
'90 Alfa 75 24v
'92 BX TZD

naki_k
Super Moderator
Posts: 29104
Joined: Sun Feb 21, 2010 9:25 pm
Location: Kirton, nr Boston, Lincolnshire

Re: XJ40 Turbodiesel

Postby naki_k » Fri May 22, 2020 9:52 am

I don’t think most owners do those upgrades on 40. Very few do them. As the standard spec is pretty good.
Simply good preventative maintenance is all thats needed.
Simple stuff like clearing out the lip in the wheel arches, front sill ends behind the finisher cap, duck bill, fuel filler gator drain, sun roof drains (if fitted).

Measures to stop all water leaks into the front footwells and boot. Those will go a long way to saving the car.
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6 x2
93 6.0 XJ81 XJ12
94 4.0 XJR
94 4.0 Daimler
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

BiTurbo228
Posts: 54
Joined: Wed Jul 09, 2014 10:52 am

Re: XJ40 Turbodiesel

Postby BiTurbo228 » Fri May 22, 2020 11:56 am

Hah! Well coming from Triumphs (and Alfas) its refreshing to come across a car that's solidly engineered to begin with! All cars have rust traps, but it's nice to find one that doesn't have weak trunnions (Spitfires/GT6s) or massive rotating mass ahead of the clutch (Alfa 75s) that really need engineering solutions to reliably fix.

I think I've got the boot leaks pretty much buttoned up (once I've welded up the aerial hole at least). Not had a good look at the routes water gets into the footwells yet though. Is it through the heater matrix inlet area, or somewhere else?
'92 XJ40 - currently turbodiesel-swapping
'87 X1/9 Turbo
'74 Spitfire 6
'98 MGF VVC
'90 Alfa 75 24v
'92 BX TZD

BiTurbo228
Posts: 54
Joined: Wed Jul 09, 2014 10:52 am

Re: XJ40 Turbodiesel

Postby BiTurbo228 » Tue May 26, 2020 9:47 am

This weekend's work on the Jag saw the rear brakes rebuilt...

84.jpg


...and the centre prop bearing support stripped and painted.

85.jpg


Once the handbrake goes in then the car will be rollable. I've found a suitable patch of flat-ish tarmac at the front of the house to drag it to and do the engine swap. Just need to wait for my dad to get his transit-camper conversion project movable then we can shuffle that along and I can start pulling bits off the BMW.

Oh, and I keep coming across bits on the XJ40 that remind me it was the equivalent of an £82,000 car when new, and is engineered like one. This is the inside of the handbrake lever arm that attaches to the centre bearing mount:

86.jpg


Completely unnecessary, but great that they've put it in as the arm still moves nice and smoothly without any wear on the components. Compared to my cheapy Fiat (£22k in today's money), Spitfire (£12k) and even Alfa (£39k) it's nice to have a car without any major engineering faults :)

I also patched up some holes in the boot floor, including some scallops to allow access to the wishbone through bolts without dropping the suspension.

87.jpg


Lastly, my 2-way vent valves arrived so I fitted one to the Jag and the other to the Spitfire.

88.jpg


The stock system on the Jag has a vacuum line that runs all the way from the intake via a charcoal canister to pull vapour from the tank. Didn't feel like supplying boost to my fuel tank so this is just a regular vent to replace all of that gubbins.
'92 XJ40 - currently turbodiesel-swapping
'87 X1/9 Turbo
'74 Spitfire 6
'98 MGF VVC
'90 Alfa 75 24v
'92 BX TZD