tsill
NAXJA Forum User
- Location
- Cincinnati
2000 xj, AW4, 231, 4"lift, sye, tom woods front and rear shaft. 140,000 miles. mobil 1 synthetic since 2003.
I was checking flexplate bolts because i have the same low idle knock everyone speaks about and found that they were tight. Problem is that i also checked to make sure the flexplate wasnt cracked and when i moved the flexplate back and forth it moved the crank noticably for and aft. I checked at the harmonic balancer and sure as **** it moves with the flexplate. So I got out a set of gauges i use to measure spark plug gaps so that I could get feel visually of what the allowable distance was for endplay at the crank.
I dont think I should really be able to see the movement? I would think even at the max allowable endplay I would only be able to feel the movement. I am going to measure with a dial indicator tomorrow to see how much endplay there really is. I just couldn't imagine I should be able to noticably see the crank move.
If the thrust bearing is toast then it would seem that the transmission is to blame? I saw no cracks in the flexplate and unfortunately for me all the flex bolts were tight. Tranny lines arent crimped that I could see.
I was checking flexplate bolts because i have the same low idle knock everyone speaks about and found that they were tight. Problem is that i also checked to make sure the flexplate wasnt cracked and when i moved the flexplate back and forth it moved the crank noticably for and aft. I checked at the harmonic balancer and sure as **** it moves with the flexplate. So I got out a set of gauges i use to measure spark plug gaps so that I could get feel visually of what the allowable distance was for endplay at the crank.
I dont think I should really be able to see the movement? I would think even at the max allowable endplay I would only be able to feel the movement. I am going to measure with a dial indicator tomorrow to see how much endplay there really is. I just couldn't imagine I should be able to noticably see the crank move.
If the thrust bearing is toast then it would seem that the transmission is to blame? I saw no cracks in the flexplate and unfortunately for me all the flex bolts were tight. Tranny lines arent crimped that I could see.