Does anyone have any thoughts on the engine number found on the block near the steering rack of my 1998 XKR?

There are no marks near the thermostat housing.

Details are:- FKBHD*4444* *11222211*FEDDB

Obviously this doesn't tally with the original number in the registration document of EC9809090701

I was going to change the coolant which is currently pink and came across the link regarding changes to the spec of antifreeze around this period.

Many thanks,

David

 

Have you checked the Vehicle Spec Book? It is indexed by VIN instead.

 

Thank you FMERTZ for the pointer to the VSB which is helpful if you know the engine is the original but I suspect that it is a replacement as the number on the crankcase does not match the registration document number.

 

FWIW, I believe this spec book describes the location of the engine number as well. I agree with you that it is the engine that counts, but even if you know the engine number, I am not sure Jaguar published a list of VIN by engine number to figure this out. Some folks have reached out to Jaguar Heritage and have had some success for these types of inquiries.

Other option would be to look up the CarFax or MOT history and reach out to the local dealer service department in the off chance this was a factory replacement (nikasil?).

Option of last resort is to figure out what is there and use the same.

 

Jaguar have consistently used the same method of V8 engine numbering based on the date and time off the production line. The original number in your registration document of 9809090701 decodes YYMMDDHHMM as 1998 / September / 9th / 07:01.

A variation was the rebuilt Nikasil engines which were rebuilt by external contractors and in addition to the original engine number also had a tag fitted with another Part Number and Serial Number.

The FKBHD*4444* *11222211*FEDDB could be casting numbers.

Graham

 

Many thanks GGG for the info. Yes, a casting mark makes more sense. No sign of a tag. Any usual location?

DAvid

 

Do you know/think it's had a replacement engine?

I've never seen one of these rebuild tags so can't say where they were fitted. Here's a photo from Nigel Thorley's "You & Your Jaguar XK8"



Looks like an embossed aluminium tag stuck on the block.

Graham

 

Thanks Graham,

that's very useful. I'm not certain that it is a replacement but not finding the number near the thermostat and finding pink coolant made me wonder. I'll have a search for that sort of tag.

David

 

Replacement tags are usually at the right rear near the bellhousing. But that is on US market engines.

 

Thanks RJ237,

had a quick look and nothing obvious underneath or on top. Will have a better look later.

David

 

It should be on top, but they can fall off.

 

AFAIK the markings on the block are related to crank journal sizes, etc. I did read how to decode them but I can't remember where, I'm afraid.
The green tag mentioned by RJ is in the same place for the European market (at least, it is on mine), and can fall off (Jaguar glue).

The engine number will be there by the tstat tower, but can be really difficult to see. It's engraved there although I guess by the end of the week the engraver wasn't pressing so hard.

The dealerships should have access to the original build sheet which will carry the engine # but the information is getting sketchy these days.

I've read anecdotal reports that the newer coolant doesn't play well with the head gasket material used on the earlier cars?

 

From the 'Engine Repair Course Code 168' (I believe supplied by Motorcarman)

 

Many thanks to Michaelh and clyons for the information on the engine dimension codes. I may not have been assiduous enough searching for the marks by the thermostat so will have another go. I'm more used to working on simpler Jaguars from an earlier age!

 

That was my first thought but the markings David describes are in a different location. The cylinder and crankshaft grading decode is in JTIS.



Graham

 

The green tag should be as shown herein.

 

Thanks Chris - I've never seen one or infomation on the location.

Here's your PDF as a photo. New members and guests can't download files from the forum.




Graham

 

Having moved to Portugal I have to have my car tested by the authorities here. This is seemingly quite a complex and detailed test including, for example, a check that I have right hand dip lights fitted. It has been stressed to me that the engineers who test the car must have a clear view of the engine number (not the VIN!) and the test will be forfeit if they don't see it. From the posts above in this thread it appears that they should see the number easily if they look at the underside of the engine. Am I right in this belief, and are there any alternative places that the number may be seen? It is not a replacement engine. Thanks!!

 

I still haven't found my number but as others have said it will be by the thermostat tower. On my 1998 XKR it does appear to be hidden below a couple of hoses going into the thermostat tower,

From a different thread this detail posted by GGG shows the location.

https://www.jaguarforums.com/forum/a...ine-number.jpg

 

Is that for import checks rather than part of the standard roadworthiness test?

On your 2005, the 10 digit engine number is stamped on a raised pad on the front of the engine block near the thermostat housing. Not to be confused with the 8 digit piston grade reference which is also shown.

Graham