Q's rear-differential SUPER STRONG!

[Sopdadope]

Here's a testament to how strong the limited-slip differential on a the first gen Q is:

A fella converted his Datsun 240Z to a Q45 differential. Powering his Z is a built 427 Chevy that produces 506rwhp without any power adders, he sprays 150-shot of nitrous for drag racing or those "special" occassions on the street. So far, 16 runs at the strip with Drag slicks, and the Q diff has gone without a hitch.

I'm planning to the Q differential as well.

[Q45tech]

The art of Zen is very important in translating a device which which will go 250,000 miles with a 99% average torque of 150 lb/ft and a peak torque of 9.85x 0.787x 300= 2300 lb/ft max for 1/10 of 1% of its life....

A couple of minutes of Full power is sure a long way from 2 x 60minutes x 300days x 10 years=432,000 minutes in drive.

Same with a 500 mile race at full power thats the same as 3 Million miles at the speed limit.

My engine and diff have survived 237,000 miles /19 mpg =~ 12,500 gallons x 6.3 pounds x 2= 157,500 Horsepower/Hours in total.......vs the racers 700 x 10-20-30 minutes.

How long do you think a Q engine would last at 6000 rpm delivering 300 HP, same with trany, same with diff,.....the temperature would soon melt every thing.

Most NASCAR engines last 3 hours hopefully we could get the same life as ours are half as stressed...if we had enough extra cooling to get rid of the heat.

It is amazing that they can get the oil and diff fluid to last 3 hours

[aaacomp]

Since he's racing ,, I'd like to know the gears and where he got them?:D

[reggiegsd]

Nissan rears have traditionally been very strong.

The original 240Z ran an R180. Many racers swap to an R160 LSD out of a Subaru (same manufacturer) to save weight. The R160s stand up well to a heavily built 240Z motor.

I've done V8 swaps into Zs with both Chevy SBs and Ford Windor motors using the R200 and I've never had a rear end failure. I've broken half shafts, universals, and wheel hubs but never a differential.

I've only seen one R230 replaced in a Q and that was because the Bozo (not this Bozo, some other Bozo) burned up the limited slip on ice.

Take reasonable care and these things should last forever.