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#1
01-29-2019, 08:19 PM
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Rear End Noise
Greeting folks , have not posted in a while. I have a 1971 Pontiac GTO with a 10 bolt BOP rear end. I rebuilt it about 20 years ago with a New Ring Gear and pinion, bearings and an Auburn Posi Unit.
I really do not drive the car much anymore, on my maintenance runs I noticed a whine coming from the rear axle area. It is consistent on acceleration or deceleration, and does not change tones when transferring wight with a body roll. I am thinking it the carrier bearings, seems right? If this is the case should I not be able to just replace the carrier bearings and adjust the backlash and keep the pinion depth as set?
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http://ultimategto.com/cgi-bin/showc...71/71_00075_18 |
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#2
01-29-2019, 08:24 PM
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Is backlash was set properly when it was installed , should not change if its the carrier bearings. But if they are bad there is metal contamination in the oil and replace pinion bearings as well.
But i would check backlash and pattern before taking it apart
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Illinois Outlaw Gassers 6.27@107 9.97@131 |
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#3
01-30-2019, 01:48 AM
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loose carrier bolts ??
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CAROLYN JONES(1930-1983 Actress)may she never be forgotten!! |
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#4
01-30-2019, 08:50 AM
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Is the whine generally at specific speeds?....accel or decel whines are usually gear related
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
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#5
01-30-2019, 10:22 AM
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Carrier bearings make "rumble" about 15mph. Pinion bearings make a whir noise. Axle bearings can make various noises. Sounds like pinion bearing to me if it's a bearing issue.
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'78 Macho T/A DKM#95, 460cid, SRP pistons, KRE 310 D ports, 3" pypes, Hooker 1 3/4" headers, hydraulic roller, 10" Continental, 3.42 gears 11.5 @117.5mph 3900lbs  ([_|_] ##\|/##[_|_]) |
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