Re.: '84 XJ6 loud rattle in rear engine/flywheel area.

Larry you got out as well as you could. I would however start a search for a flex plate--not a comment on the work just a bit of experience. The upside is if you get a new plate it will never be needed! Happy Thanksgiving.

To all you great guys that responded to my blog, I took the Jag to a master race car builder and he was able to TIG weld my flexplate to the ring gear, and fused all the rivets also. All is very quiet now, with no vibration or balance issues. Cost $100 and took about an hour.
I want to thank all again for your input!

Now here we have a great string of assistance from Jaguar Club friends. Warms my heart!

Now here we have a great string of assistance from Jaguar Club friends. Warms my heart!

If you don't have any luck, let me know as we still do them. You will just have some shipping charges.

You guys are so awesome! Now I have some options. I'll be checking local machine shops to find out if they can weld and balance. I'll get back with results or an order for Mr. Jenkins.Thanks!

I have an extra one from a 1982. If you're interested, just let me know. wljenkins at usa.net

I like Mr. Maury's idea of welding and rebalance but again, if you want a used one, I have one for you.

If it is cracked, go to a junk yard and find an older unit (series 2) that is solid.

Another thing that happens is the rivets get loose and it will rattle without any cracks. We used to weld them up and rebalance. Never had one come back so must have worked.

Thanks for responding so quickly guys! If it is cracked, could it be removed and repaired, as in welded? I noticed on later models the flexplate is actually welded to the ringgear. There are also "refurbished" units available that are welded, but terribly expensive, $500. up.

I agree with George, it's a cracked flex plate.

Larry all else eliminated you might have a torn flex plate.