driveline question

[Farmer Joe]

so ever since i did the 5 speed swap on the 620 when i get goin around 65-70mph i get a vibration in the driveline that i never got before with the automatic.

 

now when i pulled the driveline, i only took out the short section that goes from the trans to the carrier bearing. i left the rest of the driveline connected to the rear diff.

 

now my question is, does the driveline need to be put back the same way it came apart? like is there a certain way the driveline has to be clocked to made it balance out right?

 

any help would be great!

 

thanks

[datzenmike]

Manuals always say to mark so you can re-assemble them in the original position. Try disconnecting and rotating one half way round and put together. Might help cancel it out.

[Farmer Joe]

yeah i think thats what it is. this weekend ill have to get under it and see whats up. i still gotta put the correct speedo drive in it too.

 

thanks mike

[banzai510(hainz)]

datto510(Eric) put a 200sx 5 spped in place of his 4 speed trans on this 521 truck.

He had to make a x memeber for it. to get it right but he also got a vibration.

He lowered the carrier bearing a little and it solved the proplem.

 

I dont know the 620s but maybe its a angle issues esp on lowered trucks.

as datto510s was lowered 3inches

[fastdadd]

yeah if you havent you might want to put a spacer under the center bearing..i have a one piece shaft in my truck and the shaft hits the back of the cab with weight in the bed

 

 

[Farmer Joe]

well it wasnt the driveline that was causing the vibration. my exhaust was layin on the carrier bearing crossmember and when i got to that certain rpm around 65-70mph it would vibrate and resonate in the cab real bad.

 

so i put a better hanger on the exhaust, and now no more vibration!