Dropped valve seats
#21
#22
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I thought my engine was one of the last of the Nikasils, build date 19/07/2000, but i read in an online jaguar article that any cars with an "A" as the first of the last six VIN digits, has a steel lined engine.
If it's true i'm kinda gutted
If it's true i'm kinda gutted
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#24
#25
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Update- I have most of the engine stuff off and will pull the engine and tranny tomorrow. I have a good used Drivers side head and will take the passenger head to the Machine shop tomorrow or Tuesday to get an estimate. With any luck and time I will be ready to reinstall next weekend and test drive Sunday. Better be worth it. ![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
On a side note, the XK8 engine/trans R&R *seems* to be more difficult than the XJ8... only
took me a single day to remove the XJ8 motor.
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
On a side note, the XK8 engine/trans R&R *seems* to be more difficult than the XJ8... only
took me a single day to remove the XJ8 motor.
#26
#28
#34
#35
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Ok, well I am ready to build up the long block still waiting for the heads......
Oil pump fits fine, the dowel hole on the AJ27 flex plate is just a wee bit smaller than the AJ26 crank dowel, but everything lines up on it otherwise very nicely. I am supposed to have the heads this week, so i may have her running this weekend.
Oil pump fits fine, the dowel hole on the AJ27 flex plate is just a wee bit smaller than the AJ26 crank dowel, but everything lines up on it otherwise very nicely. I am supposed to have the heads this week, so i may have her running this weekend.
#36
#38
#39
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DSnyder586,
I bought a 2002 XJ8 with two dropped intake valve seats on passenger side head. I noticed a mark on top the piston that touched the valve. I am hoping no bottom end damage. Shop suggested i replace both heads? Coolant or stop leak had hardend in the middle cylinders water jackets but the front and back cylinder dropped seats not the center? Can someone explain how?
I bought a 2002 XJ8 with two dropped intake valve seats on passenger side head. I noticed a mark on top the piston that touched the valve. I am hoping no bottom end damage. Shop suggested i replace both heads? Coolant or stop leak had hardend in the middle cylinders water jackets but the front and back cylinder dropped seats not the center? Can someone explain how?
Last edited by bandre2; 03-17-2014 at 02:49 PM.
#40
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Ya- you should replace both heads, as the overheat condition probably heated the other head enough to make the seats "looser". I just grabbed a couple used heads. As for the stop leak issue- wouldn't it be better to pull the engine and check the bottom end out Rather than pay for all the work, only to find out when you drive it that the bottom end is toast?
Also consider a good used engine replacement, as it may be a batter option cost-wise than fixing the existing motor which has been overheated (might cause cylinder wall issues) and could have future problems because of stop leak blocking cooling passages (which might be the cause of the initial overheat?)
Also consider a good used engine replacement, as it may be a batter option cost-wise than fixing the existing motor which has been overheated (might cause cylinder wall issues) and could have future problems because of stop leak blocking cooling passages (which might be the cause of the initial overheat?)