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XJ81 Air conditioning condenser

Listing of rare XJ40 parts and where to find them
Starbuck
Snr Member
Posts: 681
Joined: Thu Mar 19, 2015 4:48 am
Location: Melbourne, Australia

Re: XJ81 Air conditioning condenser

Postby Starbuck » Sun Jul 05, 2015 1:54 am

Hi Larry,

There are some exceptional products out there in this day and age that challenge the view that the only way to make permanent repairs is by welding or soldering. A lot of it has been developed in the aviation industry with the flow-on effect that we get to use it to play around with it for our cars :) Even if you stick to soldering, the once the 'holy grail' of welding/soldering, Aluminium, can now be very effectively repaired with solders bought at your local hardware store and a common butane torch.

I had a look at that 'Fastcool' listing Donkey. The OE part number listing at the top is correct for the XJ81 V12, some of the others with cross-referenced listings are wrong though. Best bet would be (as per the parallel thread about this issue!) to call with some detailed questions about the actual item.

Best,

Starbuck
'94 XJ12 (and other toys)

abercanadian
Snr Member
Posts: 1105
Joined: Tue Oct 16, 2012 6:50 am
Location: Vancouver Island

Re: XJ81 Air conditioning condenser

Postby abercanadian » Sun Jul 05, 2015 3:09 am

Ah yes, the aluminum soldering at home scenario ... :?

Well I tried that first, used the aluminum solder/map gas method and did the right prep etc without much success.

The "welding" jobs looked totally pro after finishing and would be fine for something other than a gas-tight seal but after two attempts and two refits/regassings I found it was impossible to eliminate new pinholes forming during heating.

I think it might have been a different result if the condenser had been holed by a rock or something; my condenser was corroded from the inside - the whole area of the leak was very thin and couldn't take the prolonged high temperature reqd for the "solder" to flow.

So I said to hell with it and came up with the La-co repair followed up with a big epoxy reinforcing sleeve. Worked like a charm, 2 yrs on and 3 degrees Celsius on a run last week with outside temps high 20's :P

Larry
Image
94 XJ40 VDP vin 701729
Oyster Metallic/Doeskin on Aero Alloys
220,000 Kilometers/136,700 Miles
Daily Driver

94 XJ40 SOVEREIGN vin 703632
Diamond Blue Metallic/Barley
111,000 Kilometers/69,000 Miles
Parts Car

Starbuck
Snr Member
Posts: 681
Joined: Thu Mar 19, 2015 4:48 am
Location: Melbourne, Australia

Re: XJ81 Air conditioning condenser

Postby Starbuck » Sun Jul 05, 2015 3:57 am

Hi Larry,

Sadly, yes, in some cases things that work perfectly for the You Tube presentation don't work so well in the field, particularly where aluminium and its seemingly endless ability to be contaminated and corrode is concerned. In part this is the reason why a lot of other repair methods have been pioneered by the aviation industry where aluminium alloys are subjected to all sorts of 'nasties' - weight and bonding dissimilar materials are factors too, of course.

Once upon a time I had access to an adhesive that was used by the aerospace industry to attached heat tiles, including the tiles on the shuttle. It was the best thing I have ever found for reattaching rear vision mirror mounting pads on windscreen glass, so much better than the commercial products. If you got the placement wrong you were done for though, so a placement template was a must. A friend decided he could gently 'tap' a pad off his windscreen after he got its placement wrong and it had only been on there for a few seconds - the results were predictable! If I hadn't seen the bond for myself I would never have believed it could be so strong, so quickly.

Best,

Starbuck
'94 XJ12 (and other toys)

abercanadian
Snr Member
Posts: 1105
Joined: Tue Oct 16, 2012 6:50 am
Location: Vancouver Island

Re: XJ81 Air conditioning condenser

Postby abercanadian » Sun Jul 05, 2015 4:20 am

Funny you should mention that goop - I lined the inside of my front fenders with it! No more rusty fenders for me!! :lol: :lol: :lol:

Larry
Image
94 XJ40 VDP vin 701729
Oyster Metallic/Doeskin on Aero Alloys
220,000 Kilometers/136,700 Miles
Daily Driver

94 XJ40 SOVEREIGN vin 703632
Diamond Blue Metallic/Barley
111,000 Kilometers/69,000 Miles
Parts Car

newyankee
Posts: 59
Joined: Mon Oct 06, 2014 7:32 am
Location: Hamburg, Germany

Re: XJ81 Air conditioning condenser

Postby newyankee » Mon Jul 06, 2015 6:38 pm

I have got a good condensor straight out of my salvage XJ81. Tested with compressed air to 10bar (hadn't got more).

Still interested?

Guido
--
1994 XJ12
1964 MkII 4.0 project
1968 TR5
2013 T-Rex 4.2 TDI

Rok_Dr
Snr Member
Posts: 299
Joined: Mon Sep 15, 2014 5:15 am
Location: Perth, W Aust

Re: XJ81 Air conditioning condenser

Postby Rok_Dr » Mon Dec 03, 2018 12:58 pm

Just to add an update. I can confirm that an X300 condenser will fit and with a bit of rerouting, the top hose from the compressor will connect, despite the X300 top pipe exiting at 90 deg compared to the XJ81 one.

Further details on page 12 of Lady Penelope's Blog.

https://www.xj40.com/viewtopic.php?f=20&t=996663&p=188021#p188021

Cheers

Steve
12 - 1994 Jaguar XJ12 "Lady Penelope"
6 - 1986 Alfa Romeo GTV6 Grand Prix
5 - 2003 Discovery 2 S Td5 "Charlie"
4 - 2002 Nissan Pulsar ST "Iggy"
0 - 2006 19'6" Windsor Genesis "The Castle"
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