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Stranger on the Internet
Join Date: Apr 2004
Location: Bradenton, FL
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Kurt:
Same deal for me. I didn't think the alternator could make so much noise. Pat Noise Over Bumps
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Patrick E. Keefe 78 SC |
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05-30-2005, 05:03 PM
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Join Date: Dec 1999
Location: Los Angeles
Posts: 2,479
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Well, here's the deal. I put the Porsche belt on this afternoon and drove it. I can no longer hear any of the noise back there at idle. I can't hear it at all in fact.
There is some play in the alternator bears or in how the fan is mounted, and a belt that could not be tightened properly was definitely the wrong combo. The noise may return...but as far as right this moment, the fan is not rubbing at all. I took the fan off and swung it. There was definitely something w/ the wrong fan belt at work there. Keeping mind, there was no way to get it the right adjustment, and those ribs weren't makin' it. I'll post if it returns some weeks or months from now, but so far it looks good!
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-kb- |
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05-30-2005, 06:59 PM
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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
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Quote:
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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05-31-2005, 06:05 PM
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Stranger on the Internet
Join Date: Apr 2004
Location: Bradenton, FL
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Be on the lookout for a butterscotch 911 with a leaf blower duct taped to the decklid on 12 June.
I am hoping for Divine Intervention with some Sport trans mounts and alternator bearings in the next ten days. The alternator noise is under control for now, but I suppose it's been there for a while, I just didn't notice it. My car was relatively quiet until this beer bottle episode started. Also, at the risk of any blasphemy, it seems that the car is a bit more squirrely with those WEVO engine and trans mounts. I'm kind of hoping to get some other opinions out on LI. Kurt B and my alternators may be getting last rites this summer. Pat
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Patrick E. Keefe 78 SC |
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05-31-2005, 06:25 PM
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Location: Peoples Republic of Long Beach, NY
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Quote:
anytime I do anything in the mount direction I align the engine's long cross mount from the bushings to engine. The engine is operating with the 4 bolt nut's not night at all. I'll rev it a few times and try to make sure it settles in. It helps prevent unwanted harmonics.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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05-31-2005, 06:40 PM
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Stranger on the Internet
Join Date: Apr 2004
Location: Bradenton, FL
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Ron:
That's what I was going to try, maybe get everything loosend up to snug, realign the carrier to engine bolts, and try to gradually torque everything down from there. It may have picked up a preload from years of running with broken rubber mounts. Hayden at WEVO suggested something similar to this and what you said. He also said to go to the Sport mounts on the trans if this doesn't help. Pat
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Patrick E. Keefe 78 SC |
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05-31-2005, 06:46 PM
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Registered
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Location: Peoples Republic of Long Beach, NY
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Quote:
may the low harmonics god be with you
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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05-31-2005, 07:12 PM
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Join Date: Jan 2004
Location: Texas
Posts: 11,257
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Mine was doing the same and I had hoped it would go this way (Altn. bearings ) but
no noise this AM /checked with Stetho-scope no noise coming from shroud area /BUT lot's of noise from base area near Distributor / which is also Quite warm to touch. Tensioners / rails and sprockett replaced 4X yrs ago (driver side) ? what do you think.. car 83 SC 160k's Rika |
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06-20-2005, 09:48 AM
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