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Timing belt
So today I got the timing belt off my '82 US 928 manual. The clutch slave cylinder was a bear to get out of the flywheel hole, but I did that. I pulled the timing belt but I noticed that the two cam gears are not equal. The passenger side one is dished a bit more at the front than the driver's side one. I never noticed any problems with the motor, but just wondered if this is normal.
Passenger cam sprocket  Driver cam sprocket 
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1982 Porsche 928 - Blue |
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02-25-2013, 12:27 PM
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Registered
Join Date: Mar 2010
Location: Texas
Posts: 2,137
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It's normal if the timing belt was overtensioned.
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John Curry (Drift King) 928OC member Grand Prix White 1994 GTS AT (The GTS) Black 1989 GT (The GT) and Cobalt Blue 1989 S4 AT (The Blue Car) 1986 Euro AT Indishrot 1984 Euro S AT (The Stepson) and Black Metallic 1984 Euro S 5 speed (The Schwartz) |
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02-25-2013, 03:26 PM
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I didn't mean that the teeth are dished. I mean the gear on the passenger side looks like it was put on backward compared to the drivers side. As if the mounting point in the gear is offset and the gears are put in in opposite ways.
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1982 Porsche 928 - Blue |
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02-25-2013, 03:45 PM
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Banned
Join Date: Apr 2011
Posts: 683
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Look at the wear marks from the belt. First off, you need new gears the coating is worn off. Second, the belt is tracking centered based on the wear marks so it looks fine to me.
You still need new gears though. The coating saves your belt from what I understand. |
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02-25-2013, 04:55 PM
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928: Serial Enabler
Join Date: Sep 2007
Location: Elkhart, Indiana
Posts: 2,929
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One looks to be on backwards.
Those also appear to be of the older style / using old style belt. |
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02-25-2013, 05:12 PM
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1982 Porsche 928
