Blownbayou

iTrader: (7)

Just got them installed with the motive kit and now it whines. Will this diminish with use or am I stuck with a whiney axle???


Thanks

td1168

iTrader: (2)

Does it whine all the time? On the drive side? On the coast side? I put 3.90motives in my 10 bolt and it has always had a little whine on the coast side. I beat the **** out of the rear end for a little over 10,000 miles with no issues.

Blownbayou

iTrader: (7)

whines at cruising speed (50 mph-65 mph)...... Installer (very reputable speed shop) used lucas oil. Wonder if that has something to do with it?? Do not hear on coast side.

01ssreda4

iTrader: (96)

I've never heard gears get quieter with time.....

Bob@BruteSpeed

iTrader: (16)

Very seldom do new gear sets get quieter with mileage, and the noise you are hearing may not reflect on anything the installer did. You can have two apparently identical gear sets both installed exactly the same, and one will end up being quieter than the other, as it can be just the cut of the gears. Performance gear sets are manufactured for strength, and they tend to produce a little noise as a result anyway. Having a torque arm on these cars doesn't help matters, as it tends to act as a stethoscope. How the new gears are broken in can make a big difference too. You really need to take it easy on the new gears for 500 miles. If someone pulls it out of the shop after a gear install, and takes it out to see if the car is faster with the new gears, you can expect added gear noise. Bob

Blownbayou

iTrader: (7)

Great post Bob.... I unfortunately railed on her a little yesterday of course

I will live with the whine...... and first wot basically does not exist.

Thanks for the info

Bob@BruteSpeed

iTrader: (16)

You're welcome, thanks. Bob

Blownbayou

iTrader: (7)

she is also NOT a daily driver, so it is not like it will be on the road everyday.

Raoul-Duke

iTrader: (6)

They are going to whine man, nothing you can do. Get used to it, Cheers!

01ssreda4

iTrader: (96)

Bob is absolutely correct about the torque arm. Ever since going to a relocation bracket which moves the TA from the trans tail to the chassis, I have heard every click, clack, scratch, and melody from the rear suspension/rear end. It drove me crazy at first but then I realized it is the cost you pay. Torque arms are a big culprit of noise in these cars.

Blownbayou

iTrader: (7)

Agreed 01ss....... If the whine does not subside (and it probably will not), just something I have to live with.

96lt4c4

iTrader: (5)

Post pics of the pattern. If the Motives are setup right you should have very little whine. Something else I have learned is that the tighter you run the backlash the quieter they will be. This is only if your pinion depth is right though. I just got done installing a set of Motive 3.89's in my 9 inch and they are the quietest gears I have had in it yet. I set my backlash to .006 and ended up with a picture perfect pattern. I have very little noise. Its all in the setup.

01ssreda4

iTrader: (96)

Without pics of said setup what good does that do us?

96lt4c4

iTrader: (5)

Who's? Mine or his?

Here is the pattern on the gears I just setup in my 9 inch, Motive 3.89.

Coast


Drive

LS1-IROC

iTrader: (4)

Wow, that's a good looking pattern.