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Join Date: May 2005
Location: Connecticut
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Rear wheel bearing- getting frustrated...
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1997 BMW 328is 1987 944S- in pieces |
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The axle is worn out. Too much clearence where the inner bearing races sit. How much torq did you put on the nut? Did you use a nes cotter key?
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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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New cotter pin, torqued to about 300 ft-lbs. Haynes said 280-320, so we got a 150 lb guy with a 2-foot breaker bar.
I was wondering if it had something to do with the axles/ CV joints. I regreased the right side joints since they clunked. They were quite worn, one race was even slightly pitted...perhaps I should regrease them, switch sides, and try to get a little more life out of them. If it is the axle, do I need to replace the inner bearing again?
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1997 BMW 328is 1987 944S- in pieces |
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Location: Granite Falls, WA
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How do the bearings fit on the axle/stub shaft? Tight? Slip right on? Sloppy fit? MAYBE?
Could be something totally different........who knows? Tire wear/tread design? "Roar"..........desciption might be better..........hard to say........I feel the pain! Keep after it........you'll find it! (God knows, I've got my own things to find, that I haven't located the cause exactly yet!). ![]()
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1985/1 944 Granite Red (wife's car. Iceshark is lighting her way) 1983 944 Platinum (my daily) 1985/1 Guards Red (project) |
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OK...as decriptive as I can be...
The noise can first be heard at around 30-35 MPH, it's quite clear and can even be louder than the engine with the windows up and the car in a high gear. Below that, the car is normal, no unusual noises while in motion. The noise is constant...try pronouncing "raaaaaaaaaa" or imagining you're on an old concrete freeway...it's that kind of roar that drives you insane. The noise goes away when you corner to the right, as that corner balances and puts more weight on the left side of the car. Correspondingly, the noise becomes more strident if you put more weight on the right side of the car. Letting the car coast in neutral doesn't help the situation. An independent Porsche garage wrote "needs right rear wheel bearing" on a work form in 2002. No record of replacement though. I put new Goodyear Assurance tires on the back end last year. Not high-performance, but Goodyear claimed they were engineered to be quiet. Maybe I should look into having an alignment done? The last indication of an alignment comes from 1998, looking in the records.
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1997 BMW 328is 1987 944S- in pieces Last edited by yellowline; 08-01-2005 at 07:56 PM.. |
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Join Date: Aug 2005
Location: Illinois
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more than likely its like the first guy said...i just recently replaced my rear wheel bearings, and i found that since i drove with a bad bearing for so long that it wore out the stub axle, although the sound hasnt come back on my car i fear that it mihgt soon.
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When bearings on one side go bad so does the other side. Always replace both sides.
Bad CV joints can be noisy too. Also the bearings on the differential carrior can be noisy. I've found the roller bearing to wear out faster than the inner ball bearing. Especially if it gets rusty from a bad seal and lots of rain.
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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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are the rear inner and outer the same part numbers as 924 turbo? just wondering since theyre the same brakes, etc...
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Quote:
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Location: Connecticut
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False alarm guys, sorry about that.
The left rear bearing moans very slightly, so I may put that on the to-do list. It just moans when you put it in 5th at lowish RPMs...once you hit 60 or coast in neutral, the back end noises disappear, with the exception of the tires. I don't think I'm going to fool with the transmission to try and fix whatever that is. Who knows, perhaps a rock wedged itself perfectly in a tire yesterday.
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1997 BMW 328is 1987 944S- in pieces |
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Results of taking apart a rear stub axle looking for reason it was "moaning":
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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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thats some nice heat treatment there SO-CAL
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1984 944 na. FR. WILK power prom/dual chip. 2005 buick. daily beater 2002 grand am--better halfs ride. olds 98 royal brougham--gone, but not forgotten. |
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Broken race was jammed into the rollers and turning in the stub axle.
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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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I have the same moaning when driving, but when turning to right, moaning is no more.. and when driving straith ahead there it is again...
and when Im fully stopped and get moving again i can hear some noise from RR corner but it is about only 2seconds there and then at 50kmh comes the moaning (that 2seconds is like someone moves furtitures behind the wall) ![]() I doubt that, that the noise is from brakes what is that ring called? and where is it? does it come with the bearings?
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white 81 924 |
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
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Joakim,
The early 924 & 944 had the parts. Here is a picture of the PET of an early 944: ![]() And here are the instructions on how to diagnosis and install. https://www.*****************.com/kb_results.asp?ID=59 https://www.*****************.com/kb_results.asp?ID=60 GL John
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1988 924S 77K July 2017 ...+ 1987 924S 145K DD (+15K est. bad odometer) |
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How early 924?
i have -81
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white 81 924 |
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
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Same.
Here is the link to see for yourself.. Porsche PETs Porsche Classic Original Parts Catalogue - Classic Genuine Parts & Literature - Porsche Classic - Dr. Ing. h.c. F. Porsche AG
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1988 924S 77K July 2017 ...+ 1987 924S 145K DD (+15K est. bad odometer) |
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if I open rear bearing setup, is it better that I change them then, or does it matter?
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white 81 924 |
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btw can that peace lock the tyre?
today, when I left the parking lot and turned hard right(first turned the wheel to right and then releasing clucths and fealed like that RR tire was dificaltyes to turn.. the feal was like when pushing the square thing around, and it was about few meters after that it turned normally..
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white 81 924 |
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Under the car
Join Date: Jan 2008
Location: Ross, Ohio
Posts: 585
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Quote:
You are right, 145 lbs and a 4ft bar would be 580 ft-lbs assuming the bar is perpendicular to the ground and you stand directly at the end. |
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