Finally, after 4 years, gears in my Moser 12 Bolt are quiet. Had Motive gears (3:73 ratio) installed by David Tau, Winged Wheel Garage, 5758 N. Blue Angel Parkway, Pensacola, FL 32526-1640, 850-457-7696.

Previous installs were not that bad but still had whining/howling from 55 to 65 mph in 5th and 6th gear.

Now, no noise in the first four gears with a very faint howling in the 5th and
6th gears. If I turn on the radio I do not hear any howling at all.

Probably to be expected on my car as I have the SLP torque arm installed. I also have Hotchkiss trailer arms, pan hard rod and polyurethane transmission mount, all items that transmit noise and vibrations.

I highly recommend letting Dave install your gears if you live in the NW Florida Panhandle, southern Alabama or Mississippi.

Mid Life Toy
94Z28 six speed with engine, electrical and suspension modifications

 

Mid life toy,
I have been having the same trouble with my moser 12 bolt (4.10). It whines like crazy. I live 15 mins from mosers and I took one of the guys in the shop for a ride. He said a lot of them sound that way and that it is to be expected with a hi performance setup. I think thats BS. I think i have richmonds gears now but I think i will try a set of motives since you had good luck with them. You wouldnt happen to have the exact part number would you?

 

JONEZ_Z

I do not have the part number but all you need to do is order a set of Motive Gears for the ratio you need or want.

After four installs, I am convinced that the key to having a quiet gear set up is the installer--specifically, how much experience and knowledge the installer has. For example, David Tau who installed my gears installs 2-3 gear set ups a week. On my set he did 5 set ups before he was satisfied the gears would get no quieter. Actually, he set the pinion depth at a different setting than what was indicated on the pinion gear on his 5th try.

I agree with you that Moser gave you a line. Actually, when I bought my 12 Bolt from Moser (Dec 2002) the gears were so loud I could not hear my radio. I complained and Moser gave me a $250.00 refund to have my gears re-installed by a local installer (at that time I lived in Prattville, AL just outside Montgomery). After two more installers and using Motive Gears on the third installer my gears quited down. I went to the last installer after I ran into a Z-28 owner at a local drag strip who recommended David Tau. This Z-28 owner had a Moser 12 Bolt in his 2002 Z and said his gears were noisy until David Tau installed Motive Gears in his Z. True to his word, I know have quiet gears.

Bottomline: Moser has a good product and if you ask them they will recommend Motive Gears if you are more interested in quiet than strength. But you can have quiet gears in a Moser 12 Bolt if the gears are installed properly.

Cheers!

Mid Life Toy

 

Mid life Toy,
Thanks for your input. Too bad David Tau is clear down in florida. I would definetly pay him to have it done right. How much was the actual labor to have him set it up? This way i can have an idea how much to expect. Thanks.

 

JONEZ_Z

I paid a total of 613.00 dollars with $240.00 as labor and the rest parts.

Motive Gears - $197.42

Rear End Bearing Kit - $112.02

Gear Fluid - $9.00

Additive (Limited Slip) - $8.11

Shop Supplies - $2.00

Tax - $42.79

Best thing to do is too ask around to find out who has a good reputation for setting up gears. Your local drag strip might be a good start. Also, I called some GM dealer service shops.

Good Luck.

Cheers!

Mid Life Toy
Crestview, Florida