Considering getting an XKR from around 2000 - 2002. I
can’t find any specific info on the changeover from early
plastic to metal tensioners. Many people say it was M/Y
2002, but others say it is not that simple; that some 2002
cars still had the plastic ones.
The Jaguar World articles available here don’t give the
answer. A telephone call to my local dealer was handled
more like a nuisance. I had a specific VIN, but all they
would tell me was that the car had a build date in 2001,
despite being a 2002 model, leaving me up in the air about
which tensioners it would have.
Can anyone here tell me what VIN (or manufacture date)marks
the changeover? This is pretty important information when
negotiating a price.
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In reply to a message from NJAGUY sent Tue 5 May 2015:
You cannot go by VIN number or vehicle build date. You need to
go by engine serial number.
The engine plant converted to metal tensioners on August 13,
2001. That converts to an engine serial number 010813xxxx
(YYMMDDHHMM). There were likely engines in the assembly process
with plastic tensioners for some time beyond that date.
Engine serial numbers are difficult to read with the engine in
the vehicle. If you call to a cooperative dealer with the
VIN though they can look up the engine serial number. Assuming
the engine was never replaced, you should get accurate
information.–
The original message included these comments:
Considering getting an XKR from around 2000 - 2002. I
can’t find any specific info on the changeover from early
plastic to metal tensioners. Many people say it was M/Y
2002, but others say it is not that simple; that some 2002
cars still had the plastic ones.
The Jaguar World articles available here don’t give the
answer. A telephone call to my local dealer was handled
more like a nuisance. I had a specific VIN, but all they
would tell me was that the car had a build date in 2001,
despite being a 2002 model, leaving me up in the air about
which tensioners it would have.
Visit the Jag Lovers homepage at http://www.jag-lovers.org for exciting services and resources including Photo Albums, Event Diary / Calendar, On Line Books and more !
In reply to a message from WhiteXKR sent Wed 6 May 2015:
Thanks Steve,
That’s a very interesting piece of information. It is
consistent with my mechanic’s experience: he has found cars
with the 4.0 engine which have the metal tensioners even
when he is sure they are original. Where did you find this?
Regards,
Warren–
The original message included these comments:
You cannot go by VIN number or vehicle build date. You need to
go by engine serial number.
The engine plant converted to metal tensioners on August 13,
2001. That converts to an engine serial number 010813xxxx
(YYMMDDHHMM). There were likely engines in the assembly process
Visit the Jag Lovers homepage at http://www.jag-lovers.org for exciting services and resources including Photo Albums, Event Diary / Calendar, On Line Books and more !
In reply to a message from NJAGUY sent Thu 21 May 2015:
Since ALL the cars we are talking about are MORE than a
decade old you can’t be sure that a newer car has an older
replacement engine or vise versa.
Many of the engines have ALREADY been fitted with the newer
tensioners. When I get a new customer OR a customer buys a
car with a 4.0 AJV8 I always suggest pulling a cam cover and
looking at the tensioners.
Both my XJ8s HAD early plastic tensioners and I replaced
them!!!
Jaguar issued info on the updated tensioners and chains with
memos and I obtained some info from my attendance at an
Engine Repair Course Code 168 that outlined the history and
evolution of nikasil, cast-in liners and shrink fit liners
by Robert Cassidy (Project Engineer Product Investigation)
The liner history begins with engine date 000821 and time
0148 for Normally Aspirated and date 000818 and time 0854
for Supercharged Engines.
The tensioner new style replacement is well documented as
the date stated by WhiteXKR.
The early engine had the date/time at the thermostat housing
area and the later engines had it stamped on the left side
of the block.
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In reply to a message from motorcarman sent Fri 29 May 2015:
Bob,
Thanks for this additional info.
Regarding original vs. replacement engine: is it na�ve to
think that CarFax would have this info? Seems like a big
job to have just happened undocumented.
Pulling the cam cover to check for the tensioners isn’t
exactly a casual job that can be done on the dealer’s lot!
Especially by a non-mechanic. The procedure for doing this
as outlined in the Jaguar World reprint available here on
Jag-Lovers is pretty daunting!
Still looking for a response from my local Jaguar dealer
about the engine numbers for two cars I might be interested
in. Not holding my breath . . . I have a line on two
possible sources inside Jaguar Cars HQ that might be more
productive.
Warren–
The original message included these comments:
Many of the engines have ALREADY been fitted with the newer
tensioners. When I get a new customer OR a customer buys a
car with a 4.0 AJV8 I always suggest pulling a cam cover and
looking at the tensioners.
The liner history begins with engine date 000821 and time
0148 for Normally Aspirated and date 000818 and time 0854
for Supercharged Engines.
The tensioner new style replacement is well documented as
the date stated by WhiteXKR.
Visit the Jag Lovers homepage at http://www.jag-lovers.org for exciting services and resources including Photo Albums, Event Diary / Calendar, On Line Books and more !