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clunking in rear
Just noticed it today. Seems to be coming from the passenger side rear and the clunking with wheel speed and more noticeably on acceleration and when turning left. Searched the forum and sound it like it might be wheel bearings. Just wanted to see if anyone thought it might be something else.
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86 944na red (woohoo) 83' 944 gold (RIP) 94 Chevrolet Z71 |
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02-06-2007, 03:42 PM
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other than "turning left" your description makes it sound more like a bad CV joint to me. Are your boots cracked and slinging any grease? (not necessarily an indicator; I've had one go bad w/ the boot still intact)
nate
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1988 944... and a bunch of other cars 
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02-06-2007, 03:52 PM
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Boots looked ok, no grease. It'd be nice if it was just the CV's. I see on Clark's garage that CV replacement or repacking looks easier than bearing replacement. The symptoms are the same too. Guess I should go ahead and at least repack both sides?
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86 944na red (woohoo) 83' 944 gold (RIP) 94 Chevrolet Z71 |
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02-06-2007, 04:51 PM
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Early 944's are notorious for bad rear wheel bearings. The seals harden and allow water into the bearings. This will rust the outer one and cause it to fail. This in turn loosens the race and spacer stack up causing the hub to loosen. When the hub loosens the splines on the stub axle and inside the hub wear out increasing the damage that the hardened seal started.
If the large nut on the stub axle is loose figure on replacing the whole mess.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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02-06-2007, 04:57 PM
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The one that is supposed to be on at 350ft-lbs?
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86 944na red (woohoo) 83' 944 gold (RIP) 94 Chevrolet Z71 |
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02-06-2007, 05:10 PM
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winter-hater club member
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^yep.
the rear bearings on my '83 went bad. the didn't clunk, but they did make a racket.
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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02-06-2007, 05:53 PM
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I'll check it out. Any opinions on whether I should get a replacement CV or just repack?
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86 944na red (woohoo) 83' 944 gold (RIP) 94 Chevrolet Z71 |
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02-07-2007, 07:53 AM
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If the bearings are loose it's more than just a repack!
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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02-07-2007, 08:11 AM
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Just changed the CV joint and everything is smooth!!!
Clark's garage and the Haynes have great instructions. From what I've read the wheel bearings roar and scream and CV joints clunk. Thanks for the help. How do I post pics?
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86 944na red (woohoo) 83' 944 gold (RIP) 94 Chevrolet Z71 |
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02-18-2007, 07:43 AM
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To post pictures click the post reply button instead of typing in the box at the bottom of the page and it will take you to a new screen. There is a post pictures box under the reply box there.
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually |
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02-18-2007, 09:29 AM
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I had the same prob. Could be ur CVs are bone dry. Inspect and detrmine if its the CVs or just dry...I regreased and all was good. BTW CVs require a special CV grease.
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88 928 S4 Black, Black and Grey Interior Alpine head unit & amp, Bazooka Tube, Viper 5704 Smart Start GPS tracking, Devek Headers, Flowmaster 40 3" with Resonator, Auto Authority chips. Custom Luggage Cover. Traded - 86 944 Turbo Guards Red. RIP - 85.5 944 Guards Red |
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02-19-2007, 07:40 PM
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I probably could have done that. The noise just started and after removing and degreasing I didn't see any obvious wear. I used valvoline duramax moly grease. I thought about the mobil1 synthetic that everyone here seems to like but it didn't say it had moly or that it was for CV joints.
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86 944na red (woohoo) 83' 944 gold (RIP) 94 Chevrolet Z71 |
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02-20-2007, 03:24 AM
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Mine will clunk in the rear when i let out the clutch fast, in 2nd or 3rd gear. Could it be the CV?
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Neal 1988_944na India Red/Blk Int. |
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02-20-2007, 01:33 PM
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motor/transaxle mounts, prolly. could be cv's...
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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02-20-2007, 01:47 PM
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1983 Porsche 944 2.5 liter
