Started the flex plate removal and found yet more things wrong. I found that the previse owner did not put but half bell housing bolt's . 3 is all I found and only at the mid part of trans. Flex plate is cracked all the way around going back togother tomorrow and see what happens.

 

Pretty serious lack of maintance issue , probably someone discount place the owner went to that did that.

 

is that an external balance flexplate? i noticed the welded on weight.

 

Its the same as I took out

 

That is normal for the 1-piece RMS crank. The external counter weight on a 2-piece RMS crank gets "moved" off the crank, to allow the seal to fit over, with the weight moved to the flexplate/flywheel to maintain "internal" balance.

 

All done and there is no vibration or sounds at all. Car is like new and all is great!

 

Flex plates crack like that all the time; very common actually. Their usual and accustomed failure mode.

Worse, I know of more than one car whose owner refused to believe that that's what was making all the racket, and scrapped the car. What a shame. (well, maybe not... happened to K-cars ALOT)

Glad you found the problem and didn't waste a bunch of time money and effort on "replace engine".