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Old February 8th, 2006, 10:55 AM   #1
natep1
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Default What would cause this?

My 00XJ started to make a LOUD knocking noise the other day and it felt as if the drivetrain was "binding".
Thinking that it was the bottom end of the motor I started to dissasemble and came across this




The areas I have circled have been worn off from contact with the flexplate & there is corresponding markings on the flexplate itself.

I have checked and double checked anything that I thought may have caused this (engine internals, all bellhousing bolts, starter bolts, flexplate to converter, etc) and all have checked out fine.

I "think" that the flexplate may have loosened up from the crank?
Any ideas?
TIA for the help.
Nathan

Last edited by natep1; February 8th, 2006 at 10:58 AM.
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Old February 8th, 2006, 11:23 AM   #2
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1) clearance between the flexplate and starter to shallow

2) crank bolts weren't torqued correctly when it was installed
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Old February 8th, 2006, 11:37 AM   #3
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Thanks Sandals
That what I was afraid of (#2).
I put locktite on those SOB's and torqued them to FSM specs too.
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Old February 8th, 2006, 02:26 PM   #4
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It could also have gotten bent or warped somehow... water hitting it hot etc, a rock or something getting in there, could definately bend it up and cause it to hit.
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Old February 8th, 2006, 02:47 PM   #5
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The picture is too small to see anything...
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