Diff. rear mounting bolts

[Doehring]

Hi all,

can somebody please tell me what's the correct torque for the nuts at the rear differential mounting bolts?

I also found two different washers per bolt, a smaller diameter and a bigger diameter. Has the bigger one to be "inside" between the diff. and the "Moustache" or are both washers "outside" between the nut and the Moustache bar?

Thanks for infos!

Rolf

[zbane]

Rolf, what year/model are you asking about?

[Doehring]

Zbane,

sorry, you are right. It's a '72 240Z model with a R 180 3,9 differential.

Concerning the bigger washer I have in my mind that Nissan dealers did something against noise and vibrations. Was this the bigger washer?

Rolf

[Doehring]

Before this thread gets forgotten!

[dspillman]

Rolf,

I've never seen a washer in between the diff cover and mounting bar. I have had these bolts loosen during racing, and tend to dab a little loctite to prevent loosening. Mine have been one flat washer between bolt head and backside of mounting bar.

David Spillman

[Doehring]

Thanks David,

the two washer astonished me, too. I will use the bigger one and Loctite.Nevertheless, if i have to much torque I can get in troubles and with too less, too. In Haynes I couldn't find the torque info for the rear nuts, that's why I ask for help here.

Rolf

[dspillman]

I'm pretty certain that rear diff bolts are 60-70 ft pounds....Although quite honestly, I've never used a torque wrench on those bolts.

May be the reason I've had problems in the past!!!

David

[Carl Beck]

Hi all,

can somebody please tell me what's the correct torque for the nuts at the rear differential mounting bolts?

I also found two different washers per bolt, a smaller diameter and a bigger diameter. Has the bigger one to be "inside" between the diff. and the "Moustache" or are both washers "outside" between the nut and the Moustache bar?

Thanks for infos!

Rolf

According to the 72 Field Service Manual:

Gear Carrier to rear differential mounting member - lock nuts

Torque: 7.5 to 9.5 kg-m (54.2 to 68.7 ft-lb)

There is only one washer between the nut and the mustache bar.

FWIW,

Carl B.

Carl Beck

Clearwater, FL USA

http://ZHome.com

[Doehring]

Thank you all for your support!

Rolf