Setting rearend backlash - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

thelinja · 12-02-2003, 07:35 PM

How important is setting the backlash on the rearend gears when you change the diff? This will be for my stock rear diff assembly, pinion, and ring gear on a helical diff. We have the tools here at school to set the backlash, I've just read it's very difficult and time consuming and I plan on swapping the differential myself. Thanks.

Jason

Halz · 12-03-2003, 01:46 AM

When its something on the magnitude of tolerances from .0039 to .0059in, that should be a good indicator of how important it is.

thelinja · 12-03-2003, 11:47 AM

Thanks Halz. I was just curious because I see a consistant number of threads about swapping differentials, and not one thread concerning setting the backlash. Thanks again.

Mikes14240sx · 12-03-2003, 04:06 PM

Its something you want to have correct. Out of spec backlash could cause anything from excessive noise to premature gear failure. Google search differential backlash. I found some pretty good info sites when i was doing my kaaz swap.

12-02-2003, 07:35 PM	#1
thelinja Zilvia FREAK! Join Date: Jul 2002 Location: New Jersey Posts: 1,466 Trader Rating: (3) Rides Gallery: thelinja Feedback Score: 3 reviews	Setting rearend backlash How important is setting the backlash on the rearend gears when you change the diff? This will be for my stock rear diff assembly, pinion, and ring gear on a helical diff. We have the tools here at school to set the backlash, I've just read it's very difficult and time consuming and I plan on swapping the differential myself. Thanks. Jason

12-03-2003, 01:46 AM	#2
Halz BANNED Join Date: Apr 2002 Location: bay area Age: 41 Posts: 214 Trader Rating: (0) Feedback Score: 0 reviews	When its something on the magnitude of tolerances from .0039 to .0059in, that should be a good indicator of how important it is.

12-03-2003, 11:47 AM	#3
thelinja Zilvia FREAK! Join Date: Jul 2002 Location: New Jersey Posts: 1,466 Trader Rating: (3) Rides Gallery: thelinja Feedback Score: 3 reviews	Thanks Halz. I was just curious because I see a consistant number of threads about swapping differentials, and not one thread concerning setting the backlash. Thanks again.

12-03-2003, 04:06 PM	#4
Mikes14240sx Leaky Injector Join Date: Dec 2002 Location: Brevard, FL Age: 42 Posts: 107 Trader Rating: (0) Feedback Score: 0 reviews	Its something you want to have correct. Out of spec backlash could cause anything from excessive noise to premature gear failure. Google search differential backlash. I found some pretty good info sites when i was doing my kaaz swap.