Whats That Sound ?

[AMC86Kid]

ok so i have an 86 MJ and it has a 3.4 in it 

i was able to get the motor in there and running 

when the engine is in park it sounds fine but when i switch it to drive or reverse i get the weird sound you here 

i was wondering if anybody knew what it was 

 

http://tinypic.com/r/huqfi9/9

 

the video starts off with me starting the truck 

then about half way in the video i switch it to reverse from park and i get that sound

then i switch it back to park

also i can drive the truck as is so it does work i just have that annoying sound to deal with 

 

if i can fix that sound and the RPM gauge then the truck is pretty much ready 

to be teared down and cleaned up then put all back together 

 

what do you guys think 

[AMC86Kid]

i went back and tried to listen for where the sound is coming from 

so i put blocks behind the tires started the truck put it in reverse 

and jumped out so i could get under the vehicle and listen 

it sounds like its coming from where the tranny connects to the motor so 

could it be the torque converter is not installed properly or its a bad one ?

 

does that even sound like a probable cause 

[sinkrun]

sounds like flex plate bolt rubbing?

[AMC86Kid]

do you mean that that the crank pulley bolts are loose

and all i have to do is tighten them up and see if it stops 

 

like what this guy did 

http://www.cherokeeforum.com/f51/how-fix-flexplate-knocking-125547/

 

how many bolts should it have does anyone know or have a diagram of it 

[omega_rugal]

clanking sounds from the tranny, only in R or D? mmm

 

i would look inside the torque converter, something is wrong there...

[ParadiseMJ]

4 bolts on the torque converter.

 

If you have a problem with the flexplate turning while tightening, take out the starter, jam a 3"x 3.5" (or so) block of wood in the hole to lessen the possibility of breaking a tooth.

[AMC86Kid]

its the bolts on the flex plate the connect to the torque converter 

 

 

does anyone know what the torque specs on those bolts are ?