Just got 4:10 installed but...

J

Johnson505

Member

Jan 12, 2004

66

0

6

Jan 3, 2005

#1

• Jan 3, 2005

• #1

I did a lot of research on this and other websites before getting gears. I got them for Christmas and had them installed last Friday. Since having them installed I notice gear wine under light throttle like when maintaining a speed.
I also noticed a hiss sound that I haven't noticed before. I carried the car back today and they drove it and listened to it. They said that a little gear wine is normal when going from 3:27 to 4:10. Most cars will have some gear wine. They think the hiss sound is a harmonic sound caused by the change of gears. I got the FRPP gears that everyone recommended on this site. I was just wondering if this sounds "normal" or should I get a second opion from another shop in the area. Nobody metion gear wine when I was doing my reseach before getting gears so I am a little concerned.

Thanks,

 

Pughman

Member

Dec 25, 2004

295

2

18

in a galaxy far far away"MISSOURI"

Jan 3, 2005

#2

• Jan 3, 2005

• #2

mine dont ? they are quite ...... but they can have a noise and still be ok .... so i dont know ..

 

babeabe19

New Member

Mar 18, 2004

77

0

0

SAC TOWN

Mar 30, 2005

#3

• Mar 30, 2005

• #3

yea mine did that for the first 100 miles but after a while i dont know if i just got used to it or it went away but mine are quite now.

 

Pughman

Member

Dec 25, 2004

295

2

18

in a galaxy far far away"MISSOURI"

Mar 30, 2005

#4

• Mar 30, 2005

• #4

 

Gunfighter

Founding Member

Nov 30, 1999

186

0

0

Grapevine, TX

Mar 30, 2005

#5

• Mar 30, 2005

• #5

It should improve/disappear w/more break in time

 

GOLDENPONY

Founding Member

Jan 23, 2002

1,503

0

36

LOVELAND, OHIO

Mar 31, 2005

#6

• Mar 31, 2005

• #6

Gear noise

I have 3.73's and my son has 4.10's. No noise.

 

caballo

I'm the bastard love child of a threesome gone awr

Jun 4, 2004

0

0

16

Colorado Springs, CO

Mar 31, 2005

#7

• Mar 31, 2005

• #7

My gears are stock for now, but that will soon change. If I have a similar problem I'll post up...

 

trinity_gt

10 Year Member

Jan 31, 2003

3,125

81

99

Canada

Mar 31, 2005

#8

• Mar 31, 2005

• #8

Johnson505 said:

I did a lot of research on this and other websites before getting gears. I got them for Christmas and had them installed last Friday. Since having them installed I notice gear wine under light throttle like when maintaining a speed.
I also noticed a hiss sound that I haven't noticed before. I carried the car back today and they drove it and listened to it. They said that a little gear wine is normal when going from 3:27 to 4:10. Most cars will have some gear wine. They think the hiss sound is a harmonic sound caused by the change of gears. I got the FRPP gears that everyone recommended on this site. I was just wondering if this sounds "normal" or should I get a second opion from another shop in the area. Nobody metion gear wine when I was doing my reseach before getting gears so I am a little concerned.

Thanks,

Click to expand...

Whine under those conditions may indicate too much backlash or insufficient pinion bearing preload. You might want to do three things after draining the diff and removing the rear cover:

1) Check the backlash.
2) Put some compound on the ring gear and check the mating pattern.
3) Remove the driveshaft and measure the torque required to turn the pinion at a steady speed with an inch-pound torque wrench.

Or get that second opinion.

I don't think differential ring & pinion gear whine is ever "normal", new gears or not.

 

F

FalconGuy016

New Member

Oct 26, 2004

437

1

0

Northern VA

Mar 31, 2005

#9

• Mar 31, 2005

• #9

I always hear that gear whine should never be present. It's just difficult to do

 

z1n

New Member

Aug 18, 2004

36

0

0

Red Oak, Texas

Mar 31, 2005

#10

• Mar 31, 2005

• #10

FalconGuy016 said:

I always hear that gear whine should never be present. It's just difficult to do

Click to expand...

Same Here. I just had my gears (4:10's) and no noise. It seems to me that whining noise would be caused from improper alignment no matter how small and when they say "it will eventually go away" they are really sayin "after it wears in the improper alignment"

Just my 2 cents

 

joshheat25

Member

Nov 8, 2004

871

0

16

Delaware

Mar 31, 2005

#11

• Mar 31, 2005

• #11

Why did you get the 4.10's what was the deciding factor??

 

jrc_03_gt

New Member

Jan 1, 2004

786

3

0

Mar 31, 2005

#12

• Mar 31, 2005

• #12

whine is not normal.

 

S

SilverGTV8

New Member

Nov 30, 2003

295

0

0

West Brookfield, MA

Mar 31, 2005

#13

• Mar 31, 2005

• #13

I just got back from getting my 4.10 installed. The guy who did it has done over a 100+ 8.8 rear ends. He said 4.10 require shimming 99% of the time (he had to try 3 different shims to get mine to work)

I have no whine, but he said that he has had a couple of cars whine but everything checked out. :dunno:

Whine isn't normal from what I have heard. They may have not spent the time to shim the carrier correctly.

I'd get a second opinion.

 

M

modmonster

New Member

Mar 30, 2005

43

0

0

Mar 31, 2005

#14

• Mar 31, 2005

• #14

yeah dude do exatctly what trinity gt said. you cant go wrong their. A lot of times gear installers dont shim or preload pinion bearing correctly and also dont measure backlash. Either way it sounds like somethings wrong because eccesive whine is definately a problem.

 

cold96snake

20+ Year Stangneter

Jan 26, 2004

817

1

39

Truly, out to sea

Mar 31, 2005

#15

• Mar 31, 2005

• #15

Pughman said:

Click to expand...

I gues no one else noticed how old this thread is.