Hi guys

My XJR has a replacement engine from Jaguar (fitted 2002/2003 - not sure)

I finally found the plate for the engine number and am trying to see if I can glean any info from them as regards when it was rebuilt etc to try and see what kind of tensioners it will have (need to do both my cats and would like to prioritise the oldest ones first).

The plate shows

NNE 1002 TAEK



2AJDN 6293.


Anyone know how to interpret this ?


Cheers

 

[QUOTE=tberry6686;1047770]Hi guys

My XJR has a replacement engine from Jaguar (fitted 2002/2003 - not sure)

I finally found the plate for the engine number and am trying to see if I can glean any info from them as regards when it was rebuilt etc to try and see what kind of tensioners it will have (need to do both my cats and would like to prioritise the oldest ones first).

The plate shows

NNE 1002TAEK2AJDN 6293

Anyone know how to interpret this ?That I'm afraid is not your engine number, it's the chassis VIN number.
Your engine number should look like this....my engine number as an example... BS9805111239.....this is for a '98 year vehicle.
Broken down, it reads....Build sample, the year, the month, the day, the time.

You will find this digitally etched on an horizontal ledge to the right of the water
thermostat tower when standing on the left hand side of engine bay, leaning in with a bright torch, look down on the right of the thermostat tower and you will see it.
With an XJR, it's somewhat more difficult....assuming of course it's in the same place as normally aspirated engines. ;o)

 

Hi Xjay8

I thought that on the replacement engines the plate was to identify the engine (or when it was rebuilt ?). The numbers on the plate are nothing like the Vin on the car which starts SAJ.

 

If you found that plate on top of the bell housing, it is indeed the engine number. When installing a rebuilt engine I believe the original number is ground off. I replaced the tensioners on a 97 with a rebuilt engine and the numbers on the plate looked much like that. That engine had 2nd gen tensioners, so I would definitely remove a valve cover to check.

 

Yeah the plate is on top of the bell housing. Was hoping I'd be able to decipher a rebuild date to see which gen of tensioners would have been fitted as I have an XK8 as well which will need done and i'd like to prioritise the most likely to fail first.

Thanks

 

I expect a dealer will be able to help, but I still wouldn't take a chance. Removing a valve cover is not that difficult.

 

Duuuugh!....my mistake tberry...shoulda paid closer attention instead of dribbling ;o)=)
Indeed if you have found the plate on the bell housing on the right side just down behind the head it should be green and sliver.
That number will most certainly be different to the VIN No.
Yours being a 2000 model, I feel sure the replacement engine would have gen.111 alloy bodied tensioners....but to reassure yourself, it's a simple enough job to remove the right hand cam cover and eyeball the tensioners ;o)

 

In the for what it's worth department. This is what I posted about a year ago":

It IS the engine code you need. And yes the magic date is August 13, 2001 at midnight. Thus engine code: 0108130000.


Last four digits represents the time of day in military time as indicated above. Thus 0000 = Midnight.

There are more than a few documented cases where the car build date (on the door column) is September 2001 BUT with an engine that was manufactured before the cut off date. I know, I got one.

A Jaguar dealer will usually give you the engine build date (engine code/number) over the phone if you give them your VIN. But you also need to be aware that some of the engines in these Jaguars have been switched out. So there can be a case of a failed engine (for any reason) that has an engine that may be months, if not years, older than the vehicle production date.

I found the number on my engine on the front of the engine, passenger's side on a white, sticky label.

Good luck.

P.S. I did take the cams off and sure enough I had the first gen tensioners with plastic cracks right where they bolt to the block. That is where they fracture. Those fellow were just waiting to bust loose.

 

Okay, I've seen this date a million times (08/13/2001) and sometimes it is used for the Nikasil cutover date and sometimes for the secondary tensioners. I thought it was just for the Nikasil, but maybe both ? My engine is original and the only place I could find the engine number was stamped on the left (USA driver side) side of the block sort of under the exhaust manifold, easiest seen through the left front wheel well with wheel off. Mine looked kinda like LL0106091130 - year 2001, June, ninth, eleven thirty in the morning.

 

Jimmy, You might want to go back and look thru other post to confirm and get more info. I know I posted extensively to a thread about a year or so ago on this.

That 010813000 DATE on the engine is the start date for when the final, all metal (with only nylon guides) were adopted. It has nothing to do with Nikasil.

Again, my car was made in September of 2001 but with an engine with date code in July (if I remember correctly).

Other members will tell you that the only real way to know is to take off the cam covers and see for yourself.

 

The engine updates didn't stop at metal upper & lower tensioners, new chain guides where added along with morse style silent running sprockets & chains, (crank to cams) along with an uprated oil pump.

Nikasil went sometime in 98' (USA 99' M.Y.) Also, all AJ27 engines are steel liner.

REMOVAL OF CAM COVER TO CONFIRM TENSIONERS.
Looking at the front of the car, lhs remove induction tube and take this side off easier than rhs owing to dipstick tube.

Hope this clears up things.

 

The nikasil changeover date is 08/00, ser# 0008181042.

 

From Test Point post :

"Couple significant dates:

Conversion to steel cylinder liners from Nikasil - August 18, 2000 with engine serial number 0008181043. That date was at the engine plant. Cars assembled after that may have had Nikasil until the supply line units were exhausted.

Conversion to metal chain tensioners - August 13, 2001. Most, but not all of the '02 MY had the updated tensioners. Same note above applies."

So I'll have to recheck my engine number. I thought I had Nikasil, but maybe not. I know I had plastic tensioners, but no more.

 

Hi guys, total newbie here looking deep into an XKR and reviving this thread some 7 years later...

Is there any chance that a nikasil-affected engine could have been exchanged by another nikasil lining engine in 2005? Or did all replacements at that time use steel lining already?

The car in question had the engine swapped and also has the green/silver exchange label, but no other serial I can decode to a specific build date. As of right now, I'm trying to figure out if that car has a steel or nikasil lined engine and if it has metal or plastic tensioners, ideally without having to pop it open when the car isnt mine yet and its all just a potential deal.

Thanks!

 

They would not have used a nikasyl block, but if they did, it would be better than the later ones. If it was exchanged by a dealer in 2005 it would probably have metal body tensioners. But I would not guarantee that.

 

Hi RJ,

Thats exactly where I stand at the moment, unfortunately. I’ll post it here if I eventually find an answer withouthaving to pop a cover, maybe it helps the next guy