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Registered User
Join Date: Apr 2005
Location: Indianapolis
Posts: 93
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I've got a squealer! Anyone, heard this noise before?
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Registered User
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Possibly the fan is touching the fan housing? Or alternator bearings saying bye bye?
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-Dennis 1977 930 Slant, MS3 EFI, Carrera intake, Twin plug, Powerhaus headers, Magnaflow muffler, Garretson intercooler, GTX3071R |
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Registered User
Join Date: Apr 2005
Location: Indianapolis
Posts: 93
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I didn't notice any spots where the fan has touched the housing. I guess I'll start by removing the belt and see if the problem is more evident without tension. Thanks for the reply I wasn't really sure where to start investigating.
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Registered User
Join Date: Nov 2007
Location: New Jersey
Posts: 2,039
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Fan belt to tight. Make sure you have the proper shims. I had the same issue a few years ago. I purchased new shims from Pelican and installed them in their correct positions. Noise went away. This may help.
Porsche 911 Fan Belt and Pulley Replacement | 911 (1965-89) - 930 Turbo (1975-89) | Pelican Parts DIY Maintenance Article
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Rey....86 930 "the Mistress" |
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Brando
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vaccum leak
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Turbo powa! 1977 911s. it's cool |
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Registered User
Join Date: Oct 2006
Location: MYR S.C.
Posts: 9,671
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remove the fan belt and start it to eliminate that.
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86 930 42kmiles [_ ![]() 88 BMW 325is 200K+ SOLD 05 BMW 330CI 130K:: [_ ![]() 08 VOLVO V70 190K:: [_ ![]() 90 B2200[__] RUNNING:[ ![]() ![]() |
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Registered User
Join Date: Jul 2006
Location: S. Florida
Posts: 7,194
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Sounds kinda like the AC belt is wadded up under the crank pulley and complaining.
Under the alternator nut and curved washer there may be extra shims. Move one of them to in between the pulley halves. That will move them apart a little and loosen the belt. Might make the noise go away and help the alternator bearings last longer. Last edited by JFairman; 12-04-2017 at 04:40 PM.. |
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Registered User
Join Date: Apr 2005
Location: Indianapolis
Posts: 93
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Thanks fellas I appreciate the guidance. The fan belt is pretty tight so I'll start there.
Will report back with my findings. Thanks again, Chris |
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Knee Pads are Overrated!
Join Date: Apr 2016
Location: Norf TexASS
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I was wondering if Kevin, Brandon and Deez were in the engine bay at the time (think Deliverance)!
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Hi Kevin
your PM box is full This a busy time for you, hopefully you see this. I want to send you a message my friend. Rod
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"This Year ferrari's Ass is Mine" |
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Registered User
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For me it is a noise of rotation or belt, to see both conjugated, a flight(leak) of space would make a constant noise.
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Registered User
Join Date: Oct 2006
Location: MYR S.C.
Posts: 9,671
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alt bearing
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86 930 42kmiles [_ ![]() 88 BMW 325is 200K+ SOLD 05 BMW 330CI 130K:: [_ ![]() 08 VOLVO V70 190K:: [_ ![]() 90 B2200[__] RUNNING:[ ![]() ![]() |
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Registered User
Join Date: Apr 2005
Location: Indianapolis
Posts: 93
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Pulled the fan belt and there is some shaft play. So, I ordered a new alternator.
Appreciate the help, Chris |
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Registered User
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Why to change the alternator while it is just enough to replace ball bearings?
![]() Last edited by Pat RUFBTR; 12-07-2017 at 06:02 AM.. |
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Registered User
Join Date: Apr 2005
Location: Indianapolis
Posts: 93
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I don't really have the time or desire to mess around doing the bearings right now. The autozone alternator was cheap, plus 20% off, plus 3% ebates discount, lifetime warranty, and most importantly shipped to my doorstep.
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Registered User
Join Date: Oct 2006
Location: MYR S.C.
Posts: 9,671
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if you had to send yours back as a core you came out on the short end of the deal.
you could have just had yours rebuilt.
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86 930 42kmiles [_ ![]() 88 BMW 325is 200K+ SOLD 05 BMW 330CI 130K:: [_ ![]() 08 VOLVO V70 190K:: [_ ![]() 90 B2200[__] RUNNING:[ ![]() ![]() |
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Registered User
Join Date: Jul 2006
Location: S. Florida
Posts: 7,194
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The best 911 Alternator
This 160 Amp alternator is by far the best alternator you can get for a 911. Nothing else even comes close.
No core charge, no shipping your used up one to them or any of that. Just a killer alternator at a good price that shows 13.5 volts charging at idle speed with the headlights and AC on. It only puts out the 160 amps if the electrical system has a use or need for it. xbmwguy Frank gets credit for finding these on ebay. |
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I couldn't source quality rebuild parts for my original one. I even tried my local starter/alternator rebuilders and they said the same thing... they wouldn't redo it with chinese parts and have a warranty issue weeks later. Ended up with the old one in my spare parts pile and a new one on my car.
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1986 930, 1969 Mach1, 2003 540 Sport, 2016 R1200RS |
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