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Unsafe at any speed
 
Nader's Avatar
 
Join Date: Feb 2001
Location: East of Seattle
Posts: 662
Diagnose this BMW 635 diff problem?

I don't know why my brother keeps throwing his money away on this car, he could have bought a decent 911 for what he's spent to keep it running. I think it's an '87 635 CSi and he recently added a "custom performance diff" which started making "loud noises" within five blocks of the mechanic's garage. Would you say this was an installation problem or a product defect? My bro thanks you for the advice:



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87 Carrera Coupe
Old 06-27-2006, 08:53 PM
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asphaltgambler's Avatar
 
Join Date: Nov 2004
Location: Nokesville, Va.
Posts: 8,225
The only custom diff for that car would be a limited-slip unit. Did they fill with the appropriate fluid?
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'15 Dodge - 'Dango R/T Hauls groceries and Kinda Hauls *ss
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Old 06-28-2006, 04:33 AM
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Join Date: Jan 2005
Location: Minneapolis
Posts: 7,482
Quote:
Originally posted by asphaltgambler
The only custom diff for that car would be a limited-slip unit. Did they fill with the appropriate fluid?
I know you own a shark, so I might be wrong, but I thought it was common to 'upgrade' to a 3-series diff (325ix?) to get different gearing.

E
Old 06-28-2006, 07:44 AM
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asphaltgambler's Avatar
 
Join Date: Nov 2004
Location: Nokesville, Va.
Posts: 8,225
There are different ratios (a few) but also posi unit or not. Are the gears making noise??

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'15 Dodge - 'Dango R/T Hauls groceries and Kinda Hauls *ss
'07 Jeep SRT-8 - Hauls groceries and Hauls *ss Sold
'85 Guards Red Targa - Almost finished after 17 years
'95 Road King w/117ci - No time to ride, see above
'77 Sportster Pro-Street Drag Bike w/93ci - Sold
Old 06-28-2006, 08:03 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
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