It started as the usual leaking oil cooler hoses on my 6.0 V12. I tried to take the cooler line to cooler nuts off and of course they were corroded together and I cut the cooler ports off to get it out of the car. I ordered a new Genuine Jaguar cooler from SNG Barratt, and when it came it's not the same dimensions as the original cooler - mainly the centre to centre distance of the cooler ports is 3/4" further apart. Searching further, it appears they are made by NAR for Jaguar.

I have found another one made by Think Auto, who is the UK distributor for Mocal coolers. They list one for the 3.6 XJS, but not for the 6.0. Of the dimensions they do list it looks the same, but of course they don't specify the centre-centre distance. I have asked the question using their contact form, but no response so far

Would anyone happen to have an OEM XJS 3.6 cooler they could measure? I need the distance to be 250mm.

 

Jagboi64,

If your car is a standard US car post VIN 188415, then the documentation says it would have an oil cooler part number CCC6982. I'm not sure why a genuine Jaguar one would now have different dimensions. Is that the part number that SNG supplied?

The same part number was apparently fitted to all 4 litre cars post that VIN as well. So maybe search for that?

Cheers

Paul

 

Yes, CCC6982 is what the car had and what SNG supplied. Looks like sloppy QC on the suppliers part. SNG were quite frustrated with the response they got from JLR, which was really non responsive.

If you go down to OC5191-12 it looks the same as CCC6982, so I'm wondering if it will fit https://www.thinkauto.com/cgi-bin/sh...l#aOC5161_2d12

Old flat black, new is the shiny black. They were aligned on the left side.

 

I am heading down the same rabbit hole, for the same reason - did you find a CCC6982 that fits the 6.0?

Thanks!

 

Well, yes and no. What happened to mine was the cooler was fine, but I needed to replace the hoses that attached to it and the steel nuts of the hose had completely corroded to the cooler. The cooler itself was fine and wasn't leaking.

In the end, I sawed off the stubs off the aluminum cooler and removed then to be able to get the hoses out. I dissolved the ends out by hanging the ends of the hoses with the stub ends in a container of 36% hydrochloric acid and the aluminum dissolved. It took a week, but the aluminum fizzed and turned to hydrogen. I bought the acid from a commercial janitorial supply, it's intended as toilet bowl cleaner. Look at the MSDS before you buy, some cleaners are sulphuric acid and that doesn't touch aluminum.

By coincidence, I found that a size 12 AC fitting for R12 is exactly the same end as the original cooler end. This was used on plenty of GM cars up to 1993. The later R134 fittings look the same, but the thread count is slightly different and will not work. I went to the junkyard with my sawsall and cut the male ends off of the receiver dryer on a few GM cars and then machined the ends flat and did the same to my cooler. Then a friend aluminum welded the AC fitting to the cooler and I was back in business.I also used a #12 AC O ring, and no leaks so far.

You could order 2 of these for a 92 Buick Century and cut the male fitting off. https://www.rockauto.com/en/moreinfo...choice=0-0-1-1

This is the fitting you want:

 

I like the resourcefulness. You could probably order the right size fittings on Mcmaster, they have everything you could want if you know what size it actually is.

https://www.mcmaster.com/

I used to order batches of fittings to build my own version of the MB trans filler tools, as I could build one for $50 and the OEM adapters were twice the price and didn't come with a shutoff valve like I put in. Made dozens of them for local techs.

 

The problem with McMaster is cross border shipping, as I'm in Canada. Minimum shipping charge from them is about $35, so it makes expensive fittings if I only need 2. The guy at the junkyard looked at the two fittings in my hand and charged me a dollar.

 

Ahh I did not see that, then yes that makes much more sense for sure!

 

Very resourceful indeed! I don't think the shop will want to go this route.

So I took a look at the Mocal website - https://www.improvedracing.com/mocal...il-cooler.html - and they show a 9 7/8" dimension between centres; that seems about right.
What I don't know is the port size - 8/10/12AN. Would anyone have an idea on that?

Barratt tell me about a week and a half / 2 weeks to get the Jaguar part (longer for the cheaper, after-market, of course ....) and it will be a royal pita to then find it doesn't fit.

Thanks for sharing the info and your resolution!

 

It's not an AN fitting, it's 3/4 BSP threads, which is 1-1/16"-14. Anything with AN or JIC ports will not work.

Best I can tell is you want part OC5191-12
https://www.thinkauto.com/cgi-bin/sh...l#aOC5191_2d12

In my searches, it appears that only Jaguar used this end to the cooler, the UK supplier of Mocal was the only source I could find for a cooler with these ends.