Narrowed 8 3/4 questions

clementine said

Ok....

So this diff has been messed with, (probably to be used for drag racing) as you know, and it appears I have a cone style sure grip that does not utilize a thrust button. OR is it possible the thrust block can turn 90* so I cant see the hole where the button inserts? or, do I have my anatomy incorrect and the thrust block does not house the button.

Next, is it bad to have the end of the axle against the thrust block? It seems if it has not button, that is where it lives. ya? no?

Lastly would be the brakes. I will address the brake situation after I find out if the axles are supposed to, or can (in a street application) ride against the thrust block.

Thank you for your time

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Without knowing what type of differential you have you can’t be certain what you’re looking at. A clutch type has a small thrust button that’s actually two halves connected by a roll pin, so, the area you’d see through is only like an 1/8”. Plus, half the button could be missing if you only look from one side.

The axles ride against the thrust block, that’s how the end play on the factory adjusters is set- against the thrust block.

Regardless of the type of differential you have, if you were able to set the correct end play on the axles then the thrust block is NOT the issue. Since you have an adjuster on there I don’t know why anyone is talking about green bearings, they don’t have an adjuster and the parts don’t interchange. Which side the adjuster is on doesn’t really matter as far as its function setting the end play.

Since it sounds like you got your backing plates without any brake parts, you’ve got no idea what brakes those backing plates are for. If you measure the backing plates as described in the other thread I linked you can figure out if you have the right brake parts.

To me, you need to ID the backing plates for absolutely certain, and ID’ing the diff would also be very beneficial.