I run my 240Z in autocross and high-speed events. I'm looking at putting in a solid differential mount. Question is, do I still need the strap across the diff. with a solid mount installed, or can it be removed?

If the differential is solidly mounted, then it really should be able to move up or down much, if at all. My thinking is that would eliminate the need for the strap.

Any thoughts?

FYI Your estimation is correct. With the solid mount, the strap would just be redundant. If you drive on the street, you may notice a bit more rear end noise being transfered into the cockpit.

FYI Your estimation is correct. With the solid mount, the strap would just be redundant. If you drive on the street, you may notice a bit more rear end noise being transfered into the cockpit.

That's what I was thinking.

As for the extra noise, it'll have to overcome a few "other" noises for me to hear it:

- engine/exhaust noise, relatively quiet exhaust below 3500 rpm

- something in the left door starts to rattle around 75 mph, still haven't figured out that one. Hard for me to diagnose the problem while I'm driving, you know?

- some wind noise, since I don't have A/C and it won't get cool enough here in Texas for the heater until about February.

Thanks for the reassurance that my thinking was correct.