steel lined cylinders.
#2
![Default](/forum/images/icons/icon1.gif)
The lined cylinders began in mid August 2000 production which put them in mid 2001 model year cars and later.
Hope that helps.
#3
![Default](/forum/images/icons/icon1.gif)
Originally Posted by xjrguy
The newest metal body tensioners were not introduced for service until early 2005. They were apparently installed in production sometime late in 2003 for 2004 model 4.2L engines. That means mid-year production.
The newest metal body tensioners were not introduced for service until early 2005. They were apparently installed in production sometime late in 2003 for 2004 model 4.2L engines. That means mid-year production.
Careful! My '02, manufactured in June of '01, came with the plastic tensioners.
#5
![Default](/forum/images/icons/icon1.gif)
The long term belief is that the first metal tensioners were installed beginning in August '01 at the engine factory. That has been confirmed by an owner with a August 14, '01 engine manufacture date. The later chains began in February '02.
Careful! My '02, manufactured in June of '01, came with the plastic tensioners.
Careful! My '02, manufactured in June of '01, came with the plastic tensioners.
I think someone saw the VIN range end listed in the Bulletin, and ASSUMED that meant the end of the earlier non-metal bodied tensioners. I personally have replaced numerous sets of tensioners on '02 and '03 cars and have never found the metal ones in any 4.0L car.
This is all opinion and personal experience, I haven't yet found anything official or in print to concretely back it up.
Cheers,
#6
#7
Trending Topics
#8
![Default](/forum/images/icons/icon1.gif)
Check the parts catalogue, there you also find the change over from August 13th, including the use of the morse primary chain.
And there have been many that reported having the new tensioners in their car. I know of at least 1 that was a 1st owner and knew his where never changed.
And there have been many that reported having the new tensioners in their car. I know of at least 1 that was a 1st owner and knew his where never changed.
I'm sort of a nut in that I try to check part date codes [if available] for parts I remove or install. As of yet, I have not seen a date code on a metal bodied tensioner prior to 2003.
Like I said before, I'm open to verifiable evidence to the contrary; but so far the evidence tells me no 4.0L was ever originally produced with metal secondary tensioners.
Cheers,
#10
![Default](/forum/images/icons/icon1.gif)
I've 2 XJR engines with steel liners and metal timing parts including the morse chains and crank cog, plus the oil pump with nozzles. These are the last 4.0 engines built post midnight Aug 13th 2001. (cars built in Oct 01' and March 02')
All XJR 100 and XKR 100 have these 'evo' engines before Jaguar went to 4.2 - a matter of months for the UK MY 2003 XK.
Many people in the UK mistakenly think buying a UK MY 01' (or USA MY 02') is safe from plastic, this is not so, to be absolutely sure there's a need to confirm by engine number.
The general rule is the later the better
All XJR 100 and XKR 100 have these 'evo' engines before Jaguar went to 4.2 - a matter of months for the UK MY 2003 XK.
Many people in the UK mistakenly think buying a UK MY 01' (or USA MY 02') is safe from plastic, this is not so, to be absolutely sure there's a need to confirm by engine number.
The general rule is the later the better
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
The following users liked this post:
DJ-Roy (08-14-2012)
#11
#13
![Default](/forum/images/icons/icon1.gif)
Strangely, on the V6 it seems to be steel or "dry steel" when describing that engine.
Lookin' forward to the early date stamp, I've sure never found one.
Cheers,
#14
![Default](/forum/images/icons/icon1.gif)
Well isn't that a kick!! Now, somebody, somewhere, knows the real story here. I wonder how long it's gonna take to find 'em.
So much for getting "accurate" information from some technical people within Jaguar.......
Nice job, avos! [I love this Forum.........]
So much for getting "accurate" information from some technical people within Jaguar.......
Nice job, avos! [I love this Forum.........]
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)