XJ XJ8 / XJR ( X308 ) 1997 - 2003

I just changed my own timing chain tensioners........HOW TO

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  #41  
Old 03-24-2008, 04:58 AM
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Default RE: I just changed my own timing chain tensioners........

It didnt cost me anything to repair the motor. Only all the cooling system parts. I was able to take heads and cams and chains etc from another vehicle that only had 8k on it. If you are doing the swap, wise to change tensioners while you have engine out. So much easier. Also once swapped and new motor into your car, you won't have to worry about it for along time.

On a side note, I just took a 2008 SV8 engine out on Friday. Had it out and disassembled in under 6 hours. Will post pics on a new thread.
 
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Old 03-04-2009, 10:44 AM
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Hi there.
I have a xj8 lwb. JAg quoted 1900 + vat to replace, luckily there is a great Jag Specialist in Cheltenham called Autospray.
Much cheaper - quoted 1100 all in including a valet!
 
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Old 03-04-2009, 12:54 PM
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Great job, I down loaded the pic's, will help, if I ever have to do it. I brought the cam, lock down tools, but don't know if the 4.2 are the same tools as the 4.0 litre. Still a shame you can't buy a workshop manual for a 2004 Jaguar.
 
  #45  
Old 03-13-2009, 10:11 PM
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Are you in Jacksonville fl?
 
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Old 03-27-2009, 12:21 AM
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This is by far one of the best post I've run into on this site. Thanks for the info.
 
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Old 03-29-2009, 09:52 AM
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I'm just about to change the secondary tensioners (white plastic 1st gen?) on my 135,000 mile '98 XJR.

Does anyone have the guide on torque figures for everything, and what tool to use (And how to use it) to lock the crank.. if that's necessary with the cams locked?..

Thanks
Tim
 
  #48  
Old 04-03-2009, 12:22 PM
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is it possible for you to provide me with all the parts number for the items below please, I would like to get this job done asap to my '00 VDP 79kmiles thanks


Originally Posted by Brake buster
BTW, i forgot to mention the costs of this project

two new Mk4 alloy tensioners ( handed ) @ £49 each ( you can convert to $'s yourself at current rates )

four new shorter tensioner bolts @ £0.96 each

full set of AJ27 cam cover / spark plug and bolt seals including the VVT solenoids @ £78 for the whole set

purchase of the tools came in at £250 , but i sold them on for no loss to the next needy Jag owner....


so a grand total of £179.84...........

i have also installed a K&N filter in the standard induction box, plus a new set of spark plugs, new water pump ( new type ) , new thermostat and seal, new vacuum hose from the top of the cam box , flushed the oil system and put in a new filter and genuine jaguar Havoline 5W30 oil ,

well, i wasnt doing much at the time, lol

BB
 
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Old 07-01-2009, 09:21 AM
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Hi,

I am considering doing this myself also. I am curious about someone's comment about removing the camshaft bearing caps and lifting the cam shaft up a bit to remove/replace the secondary chain tensioner.

Having never worked on a jag engine, I really don't know the dangers involved here but it seems to me that if the chains (primary and secondary) never leave the sprockets/camshafts then if the camshaft (the exhaust cam) does move then it is no big deal since everything else will move (keeping everything in time).

Also you could put witness marks on the cam sprockets/crank pulley to reposition them if something did happen.

I would really appreicate expert insight on this. Again, I really do not know the dangers here or maybe I am missing something.


I realize this not the most elegant way but it could save you $400 in tools. It makes a whole lot of sense to it by the book and invest in the tools if you work on Jags for living.
 
  #51  
Old 07-01-2009, 12:57 PM
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Originally Posted by tkeeling
i had oil changed today, and noticed a knocking noise afterwards, sounds like passenger side, top on engine. knock sounds like a jack hammer, knocks faster when rev engine.

i parked it and wont drive it until i knwo for sure what it is. my mechanic is out of town for the summer vacation, i am in houston, tx

anyone here can fix this for me, i can work on older cars but not this fancy thing. all my tools are for older fords not jag.

any help here

tinakeeling@sbcglobal.net
First I would make sure they put the full amount of oil in your car. Typically, the tensioners, when failing, will rattle on startup, then quiet down. I'd try that first and see if the noise diminishes. You'll hear some 'lifting' but not to the extent you are hearing.
 
  #53  
Old 07-02-2009, 11:27 PM
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Well, the primary tensioners changed significantly around build date Aug, 2001, which is MY 2002 in the U.S.
 
  #54  
Old 07-03-2009, 10:46 PM
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It possible I may have to do this soon where is the best place it get the tool from?
 
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Old 07-04-2009, 05:40 AM
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Adam, check ebay.
 
  #56  
Old 07-05-2009, 09:02 AM
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Originally Posted by sparkenzap
Adam, check ebay.
No luck but I did find motorcars LTD in houston to have a kit for
$285.00 http://www.motorcarsltd.com/V8.TIMING.TOOLS.html
 
  #57  
Old 07-05-2009, 10:58 AM
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You could always make your own tools from hardware store materials.

You should find the instructions by Googling it.

Some details on this site too.
 
  #58  
Old 08-28-2009, 07:00 PM
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i just put new tensioners in and had to replace the secondary chain. when the tensioner failed the little plastic piece got stuck between the sproket and the chain so i had to remove the exhaust cams.. i have everything put back together but not sure on the timing. i havent started it yet and im scared too..i have seen in many pictures that the camshafts have flat spots near the sprokets and noticed that they are both laying the same way..is that exactly the way they should be????
 
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Old 08-30-2009, 01:04 AM
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Hi Digi,

Your engine did not stall because of a timing chain problem. You will need to bring your car to a Jaguar dealer to have it checked out.
 


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