PFADT POLY DIFF BUSHINGS (GEAR WHINING) NOW - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BUMBLEB · 03-08-2010, 06:11 PM

Just installed my PFADT rear diff bushings last weekend,Now I am noticing allot of gear whining under very slight load in gear.If you let off gas goes away or if give a Little more gas it will also go away.In 5th and 6th gear light cruise it is allot more noticeable also,It was not their before,the bushings were installed.I was wondering if any one else is having this problem and can I use a different bushing maybe a Little softer?

Moriartii · 03-08-2010, 06:27 PM

Did you get the differential installed correctly back into position? This almost sounds like it is tilted or cock-eyed. Just enough that it binding? That make sense or am I off in left field?
Cheers
K

SSOOCH · 03-08-2010, 06:33 PM

Hit up Aaron with Pfadt Racing. He's a member on here.

mtcwby · 03-08-2010, 08:21 PM

Quote:

Originally Posted by Moriartii

Did you get the differential installed correctly back into position? This almost sounds like it is tilted or cock-eyed. Just enough that it binding? That make sense or am I off in left field?
Cheers
K

Left Field...The diff will only fit in the correct position. Can't possibly tilt or bind it.

Moriartii · 03-09-2010, 10:51 AM

Thanks mtcwby!! Was a guess.
Cheers
K

Petersimov · 03-12-2010, 09:01 PM

did u get it fixed

IROCanSS · 03-12-2010, 10:35 PM

mine do too.... I thought it was my 4.10s but it does not do it all the time! I talked to my install guy and he said the gears are PERFECT. I am experiencing the EXACT same whine as you, only at certian speeds and not at coast or accelleration, most noticable at 50-60 cruising. hmmmm??? Lets see what the toe bars and trailing arms do... they go on in 2 weeks.

I will be watching this.

baysinger · 03-13-2010, 03:40 PM

If the ring and pinion gear are set too loose or too tight it will whine neither is good. If it were mine I would get it corrected soon. In fact the next time I drove it would be to the shop to have it corrected. If you continue to drive it like this causing improper wear you may never be able to get the noise out. Just My Opinion

Robert91RS · 03-13-2010, 04:28 PM

This is probably normal noise that is only more noticable now because the lack of insulation that these stiffer bushings provide. Pfadt makes a hell of a product but not everybody is going to enjoy driving a race car everyday and unfortunately this is the give and take relationship with performance parts.

Robert91RS · 03-13-2010, 04:40 PM

Quote:

Originally Posted by baysinger

If the ring and pinion gear are set too loose or too tight it will whine neither is good. If it were mine I would get it corrected soon. In fact the next time I drove it would be to the shop to have it corrected. If you continue to drive it like this causing improper wear you may never be able to get the noise out. Just My Opinion

The OP never stated he had done a gear swap but that the noise started after installing diff bushings. So no damage to worry about.

IROCanSS · 03-13-2010, 09:36 PM

Quote:

Originally Posted by Robert91RS

The OP never stated he had done a gear swap but that the noise started after installing diff bushings. So no damage to worry about.

This is what I am thinking too. I am experiencing the EXACT scenerio as the OP, noise at the same times but my installer tells me my 4.10s gear pattern is perfect. Checked and rechecked so he is not sure why the noise is there and why it is so speratic. If the OP has factory 3.45s still in his car and is exeperienceing the same noise I can only assume it is from the bushings.

Petersimov · 03-13-2010, 11:04 PM

who else makes the diff bushings

IROCanSS · 03-13-2010, 11:27 PM

I think BMR might

BUMBLEB · 03-14-2010, 12:34 AM

Quote:

Originally Posted by Robert91RS

This is probably normal noise that is only more noticable now because the lack of insulation that these stiffer bushings provide. Pfadt makes a hell of a product but not everybody is going to enjoy driving a race car everyday and unfortunately this is the give and take relationship with performance parts.

I understand what you are saying,But I can think of several people that are running the pfadt bushings and no noise.I thought about going back to the stock more insulated bushings and trying to stiffen them up by putting round pieces of nylon rod in the gaps,but I tossed the bushings and gm says they are not sold seperatly from the rear diff.

03-08-2010, 06:11 PM	#1
BUMBLEB IN GOD WE THRUST Drives: 2010 RY 2SS RS M6 TVS2300 2015 Z06 Join Date: Sep 2009 Location: PARKER,CO Posts: 284	PFADT POLY DIFF BUSHINGS (GEAR WHINING) NOW Just installed my PFADT rear diff bushings last weekend,Now I am noticing allot of gear whining under very slight load in gear.If you let off gas goes away or if give a Little more gas it will also go away.In 5th and 6th gear light cruise it is allot more noticeable also,It was not their before,the bushings were installed.I was wondering if any one else is having this problem and can I use a different bushing maybe a Little softer? __________________ SUCKING AIR & GAS & HAULING ASS http://www.picturetrail.com/sfx/album/view/22851126

03-08-2010, 06:33 PM	#3
SSOOCH Camaro SL,UTs Drives: 2010 Camaro SS/RS #16429 Join Date: Sep 2006 Location: South Jordan, UT Posts: 7,357 View My Garage	Hit up Aaron with Pfadt Racing. He's a member on here. __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Pfadt Poly Differential Mounts Installed	Blue70SS	Suspension / Brakes / Chassis	85	06-15-2018 07:35 PM
Wanted Pfadt sway bar bushings	kga10734	Suspension / Chassis / Brakes	2	03-06-2010 11:41 PM
Mike Norris Motorsports and Pfadt Race Engineering 5th Gen Differential Poly Mounts	Mike Norris	Transmission / Driveline	0	01-21-2010 11:03 AM
DIY Pfadt Poly Differential Mounts	Blue70SS	Camaro DIY & HOW-TO instructions & discussions	0	01-20-2010 12:59 PM
Pfadt Racing Poly Control Arm Bushing Kit	PfadtRacing	Suspension / Chassis / Brakes	9	12-13-2009 01:38 AM

03-08-2010, 06:27 PM	#2
Moriartii Drives: 11 IOM 2SS/RS M6 w/Hurst Join Date: Nov 2009 Location: Austin Texas Posts: 1,269	Did you get the differential installed correctly back into position? This almost sounds like it is tilted or cock-eyed. Just enough that it binding? That make sense or am I off in left field? Cheers K

03-09-2010, 10:51 AM	#5
Moriartii Drives: 11 IOM 2SS/RS M6 w/Hurst Join Date: Nov 2009 Location: Austin Texas Posts: 1,269	Thanks mtcwby!! Was a guess. Cheers K

03-12-2010, 09:01 PM	#6
Petersimov Drives: 2ss Join Date: Oct 2009 Location: Joliet IL Posts: 250	did u get it fixed

03-12-2010, 10:35 PM	#7
IROCanSS Account Suspended Drives: 89 IROC 350 Join Date: Mar 2009 Location: Back roads, southern Ohio Posts: 12,504 View My Garage	mine do too.... I thought it was my 4.10s but it does not do it all the time! I talked to my install guy and he said the gears are PERFECT. I am experiencing the EXACT same whine as you, only at certian speeds and not at coast or accelleration, most noticable at 50-60 cruising. hmmmm??? Lets see what the toe bars and trailing arms do... they go on in 2 weeks. I will be watching this.

03-13-2010, 03:40 PM	#8
baysinger baysinger Drives: 2010 IOM M6 SS Join Date: Feb 2010 Location: Shreveport, Louisiana Posts: 76	If the ring and pinion gear are set too loose or too tight it will whine neither is good. If it were mine I would get it corrected soon. In fact the next time I drove it would be to the shop to have it corrected. If you continue to drive it like this causing improper wear you may never be able to get the noise out. Just My Opinion

03-13-2010, 04:28 PM	#9
Robert91RS Drives: Everywhere Join Date: Jun 2008 Location: TX Posts: 852	This is probably normal noise that is only more noticable now because the lack of insulation that these stiffer bushings provide. Pfadt makes a hell of a product but not everybody is going to enjoy driving a race car everyday and unfortunately this is the give and take relationship with performance parts.

03-13-2010, 11:04 PM	#12
Petersimov Drives: 2ss Join Date: Oct 2009 Location: Joliet IL Posts: 250	who else makes the diff bushings

03-13-2010, 11:27 PM	#13
IROCanSS Account Suspended Drives: 89 IROC 350 Join Date: Mar 2009 Location: Back roads, southern Ohio Posts: 12,504 View My Garage	I think BMR might