I'm hoping someone can help with my differential issue.
While backing up, I stalled my engine stalled the other day and noticed a click-click-click-click coming from the back when I coasted.
I jacked up the rear and put it in neutral.
When I turned one wheel, the other wheel turned the same direction and the drive shaft was also turning. I thought the other wheel is supposed to turn opposite.
Then when I started turning the other way, it went CLUNK and there was some free play. It felt like something let go and the wheel started turning freely and the driveshaft and other wheel were not moving.
There was also a metallic chuck-chuck-chuck-chuck when the wheel was turning free.
Doesn't sound good,which doesn't necessarily mean it's bad . Personally I would start to take stuff apart and spin and listen as I go. 1)Disconnect the driveshaft spin and listen, 2) pull the wheels spin and listen,pull the drums spin and listen,etc. Axles and ultimately the center,I wouldn't drive it sounding like that. Best of luck,I'm curious as to what you find.
The noise is definitely coming from inside the differential. I crawled under as the wheel turned.
I have been driving it and noticed that occasionally there is a BANG from somewhere in the rear that sounded like someone hitting the floor with a sledge hammer.
I bet that was the differential locking up or an axle getting or loosing power for a split second.
It could be a bad or worn spider gear or spider shaft.
Or could be the friction discs partly locking on its own.
Well, I think I have a detroit locker. I have done a bunch of research on this.
This is the differential that they put in the original Shelbys. It has no friction discs and as the name implies, its specialty is locking the 2 axles together -- except on sharp turns where a mechanical part lets the slower wheel beak away from lock so you dont get chirping and jumping(like a 4WD) but you get some ratcheting sound.
I set it on jack stands again and put the it in gear. I could not spin either wheel and when I worked a wheel back and forth, I could unlock a wheel -- the clicking is a bit odd but basically normal.
If you look at the guts of a locker, instead of friction discs, you can see there are teeth that are meant to disengage for sharp turns -- not ideal for hard road driving.
I didnt have to tear it down. Luckily, I found an old picture on my old phone that looks EXACTLY like this picture of a locker. Note the smooth surface on the bolt side that means Detroit locker (Traction-loc has a bigger hump for friction discs)
The issue could be that the springs are weak so it unlocks and locks too easy. At least I know now its not the sound of a traction-loc ready to blow up
I think I may save up for a new traction-loc unit since I'm not building a drag racer -- its more of a daily driver/road racer set up.