Is my miata torsen broke?
#1
Junior Member
Thread Starter
Is my miata torsen broke?
I am swapping an RX-7 GSL-SE rear end into an older Datsun Roadster, and I bought a used torsen differential off c/l. Looked fine, and I swapped it into an open 84-85 big axle carrier. Just got the axles narrowed and installed everything, and now when I turn the driveshaft, the axles reluctantly move but I can hold both axles by hand (with a helper) and still turn the driveshaft for many revs. This happens regardless of which direction I turn the driveshaft. I don't have any gear oil in yet, but I'm not sure it makes a difference. Not sure what could be wrong--I thought it was all mechanical. Any ideas?
#2
Arrogant Wankeler
There should be a bit more backlash than a standard diff but not what you describe. Did you set the crown and pinion tooth contact correctly? They are 26 spline axles?
Sounds stuffed.
Sounds stuffed.
#3
Junior Member
Thread Starter
"Sounds stuffed"--not sure what this means.
#5
Always entertaining
iTrader: (2)
If you want I can check my stock torsen in my 94 miata when I have it in the air next. They are weird and act closer to open diffs than most think.
Depending on the one you bought, the torque bias can vary, that is why you will hear miata people talking about a "tight" torsen or similar terminology (that and gear wear).
Explains the whole thing quite well.
https://www.miata.net/garage/diffguide/
Some more useful info:
Solomiata : Drivetrain : Interchange
and also a video (not my own) to compare what you are seeing on yours.
Depending on the one you bought, the torque bias can vary, that is why you will hear miata people talking about a "tight" torsen or similar terminology (that and gear wear).
Explains the whole thing quite well.
https://www.miata.net/garage/diffguide/
Some more useful info:
Solomiata : Drivetrain : Interchange