OK, I fixed a bad hose last year on the 94 oil cooler. I had to
take the cooler out and cut off the hoses at the tube junctions and
put a bead on the pipes and used new hose and clamps. While I had
the front apart I noted another set of holes for a longer oil
cooler; in the big Green Book it states that the Euro models had
the long version and the States had the short one!
So I emailed a UK vender in Jag World who specializes in XJS and he
states that all the cars there have a long cooler! He was not
aware that the USA V-12 had short coolers.
Looking at some parts numbers there is a confusing array he
suggested that CCC6982 would be the long facelift version used in
the UK. Since I am down in the hot South, I would like to upgrade
to the bigger version. I would like to see if a Jag owner in the
UK can confirm that this is the right one to get. It should be
over 50cm in length while mine is about 25cm.
Thanks
Dan–
DanS
columbus ga. usa, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
While I had
the front apart I noted another set of holes for a longer
oil
cooler; in the big Green Book it states that the Euro models
had
the long version and the States had the short one!
So I emailed a UK vender in Jag World who specializes in XJS
and he
states that all the cars there have a long cooler! He
was not
aware that the USA V-12 had short coolers.
Yes, the cars outside the US (North America) had different oil coolers. They also had different oil routing through the cooler. IIRC the US is bypass flow and the EURO are full flow. So the cooler is not the only difference.
In reply to a message from Geoffrey Green sent Wed 18 Sep 2013:
Geoff:
The original poster’s V12 is a MY '94. He’s got a 6.0L engine.
I believe the latter has full flow oil cooling, not relief
flow.
Steve–
The original message included these comments:
aware that the USA V-12 had short coolers.
Yes, the cars outside the US (North America) had different oil coolers. They also had different oil routing through the cooler. IIRC the US is bypass flow and the EURO are full flow. So the cooler is not the only difference.
Geoff Green
Kirbert
(Author of the Book, former owner of an '83 XJ-S H.E.)
4
The original poster’s V12 is a MY '94. He’s got a 6.0L engine.
I believe the latter has full flow oil cooling, not relief
flow.
Yeah, this whole line of info is confusing. We’ve known for some
time that all early cars had bypass oil cooling, then cars for the
German market switched to full flow cooling (reportedly needed for
the Autobahn), then some time later all cars went to full flow
cooling. And the full flow cooling involved a different cooler than
the bypass scheme – but I had kinda presumed the difference there
was that the full flow cooler had to operate at full oil pressure and
at a higher flow rate than the bypass cooler. I hadn’t heard they
were physically a different size. If there are two different size
coolers WITHIN either the full flow or bypass scheme, that would be
news and perhaps worth knowing for some members.
– Kirbert
// please trim quoted text to context onlyOn 18 Sep 2013 at 12:09, sbobev wrote:
In reply to a message from Kirbert sent Wed 18 Sep 2013:
SNG Barratt lists relief type as C43923 and late full flow as
CBC2692 for XJ 6 & 12. I imagine XJS utilized same parts.–
Tom Anderson
Fresno, Ca. USA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php –
// please trim quoted text to context only
Kirbert
(Author of the Book, former owner of an '83 XJ-S H.E.)
6
SNG Barratt lists relief type as C43923 and late full flow as
CBC2692 for XJ 6 & 12. I imagine XJS utilized same parts.
Well, yeah, I wouldn’t have expected Jaguar to waste money making
oodles of different oil coolers for different markets! In fact, it
wouldn’t surprise me at all if the decision to go from relief to full
flow was made all at once, but they decided to fit the new full flow
parts to cars headed to Germany and their Autobahns while North
America and other markets continued to get relief systems until the
parts stock was consumed.
Anyhow, back to the question at hand: Only two oil coolers, but are
they different sizes? In fact, if anyone had those parts in hand,
it’d be great if they’d take photos of all the visible differences
and post them online so we could have a look. I’ve never been too
clear on why Jaguar decided it needed a different cooler for the full
flow at all, why wouldn’t the same old cooler have worked? Yeah, the
pressure may be higher, but 100 psi shouldn’t be a major issue for a
metal cooler.
– Kirbert
// please trim quoted text to context onlyOn 18 Sep 2013 at 18:58, Tom Anderson wrote:
