any way to tell?
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Joined: Feb 2002
Posts: 12,288
From: Amityville, New York
if they are stock motors one would be the mechanical linkage to the throttle body for the OMP, s4 has mechanical and s5 is electric, another easy one is a plastic thermostat housing on a s5 versus a aluminum one on a s4. There are aftermarket housings sold but if the motor is stock thats a quick easy thing to check.
s4 8 blade fan, s5 10 blade fan.
those aare 3 quickies you can easily see.
s4 8 blade fan, s5 10 blade fan.
those aare 3 quickies you can easily see.
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Joined: Sep 2002
Posts: 2,763
From: Savannah, Ga
Originally Posted by j9fd3s' post='915889' date='Feb 2 2009, 04:12 PM
S5 has the knock sensor holes above the spark plugs.
On S4, there will be a boss on the center iron near the oil filler neck, facing forward, thats tapped for the knock sensor.
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