Originally Posted by Predator

Okay Bob, I've seen that post a million times.

So the problem of distortion is due to Moser using four small bolts to mount to the torque arm?

Originally Posted by MeentSS02

Actually, Moser claims they use the four shorter bolts to make the housing stronger since they aren't punching holes through the entire housing like Strange, but their design sucks from a practical standpoint unless you really like safety wire.

The 9" torque arms are usually mounted to the housing itself differently. They use a big, beefy bracket that does not bolt anywhere close to the pinion gear like the 12-bolts do that have the mount cast in to the housing.

Originally Posted by Predator

MeentSS02, just want to clarify that with the Strange 12-bolt, there aren't holes punched through the entire housing. There are two plate-like protrusions with holes in them that mount to the torque arm. Sort of on the side of the housing.

Originally Posted by Predator

MeentSS02, just want to clarify that with the Strange 12-bolt, there aren't holes punched through the entire housing. There are two plate-like protrusions with holes in them that mount to the torque arm. Sort of on the side of the housing.

Originally Posted by MeentSS02

Yes, but it is still cast into the housing, and then machined. The 9" torque arm brackets are entirely separate from the gear case.

Originally Posted by Predator

I see what you're saying. I also realized later that you have a Strange 12-bolt yourself, so you already knew how the torque arm mounted. The way you described it, it sounded like you meant that the two bolts go through the housing itself, rather than those plate protrusions to the side of the housing. No biggie anyway.

Originally Posted by MeentSS02

Indeed...now that I read it again, it does make it sound like the bolts go through oil and gears before coming out the other side. Definitely not the case there

But that is why Moser uses four blind holes instead of the through holes like Strange's 12-bolt...they want as much metal in the housing for structural support at the expense of a ****-poor fastener design. Oddly enough, the Moser 9in. housing uses two through bolts instead of the four blind holes like their 12-bolt...

If I had to do this all over again, I would have probably just gone through Mark Williams for my 12-bolt...at least then I would have known it would be right straight out of the box. I am looking forward to learning how to set up gears though...at least I'll know it was done right this time around.

Originally Posted by MeentSS02

Oddly enough, my 10-bolt whined louder than my Strange does now straight from the factory. I kept getting the runaround from the dealership "Oh, it'll be noisy...it's a performance axle." It took a different dealership 4 tries to get them set up right, but it was finally stone silent after that.

I've had horrible luck with axles thus far...I probably could have prevented this one had I just run a quick pattern check before I installed it, but I got impatient.

Originally Posted by Predator

Damn, I'm getting owned in this forum. I think I'll stick with the External Engine forum, or maybe Appearance and Detailing.

By any chance, are you heavily into 5k launches, or is it just bad luck?

Originally Posted by MeentSS02

Funny you should mention that...

The car has never seen a drag radial in its life, and I've never launched over 3000 RPMs, and even at that, my tires always spun (to a scorching 2.1 60' ). The 10-bolt was noisy from the day I drove it off the dealership's lot...really, it is just bad luck. Even with the 12-bolt, I still have never launched it, and it still rides on BFG KDW2s.

Originally Posted by Predator

These rearend experiences are so subjective, I'm learning that it's futile to post individual experiences. I see your point, maybe I mean when the engine gets into the power band it seems noisier, I'm not sure though.

All I know for sure is that my 12-bolt is noisier than my stock rear, not in an annoying way, to me anyway, and I expected it to be a noisier, and I can't see how it couldn't be noisier than a 10-bolt. Everything is bigger, the gears, all the moving parts. Also, I find that my rear sounds different everytime I drive the car. I've only put a couple hundred miles on mine, so I'm still learning its characteristics.

It seems that a discussion about aftermarket rearends is steeped in subjectivity, and I'm having a hard time defining what the facts are. I think in the future I'll stick to topics that lend themselves to facts.

So what do you think is causing your rear to be noisier after trips to the track? What's your theory? Thanks.

Originally Posted by INMY01TA

My post you quoted wasn't subjective but fact. Rear end spins same speed no matter which gear but as to the noise after trips to the track? It's called "beating the **** out of it" And fwiw I've known guys with Moser 9's that are noisy.