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s4-s5 turbo rotors different?

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Old 04-16-06, 08:02 PM
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s4-s5 turbo rotors different?
is there any difference between a s4 and a s5 turbo rotor i know there is for a non turbo but not sure for turbo. are they swapable?
thanks
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Old 04-16-06, 08:11 PM
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You can swap them if you change the counter weights over to S5.

They are .5 higher compressions and weight approximately .5lbs less and have more of a CNC'd unit compared to the casted S4
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Old 04-16-06, 08:15 PM
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s4 have 8.5 compression ratio
s5 are 9.0
the s4 is slightly thicker and stronger

the s5 are machine cut rather than cast
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Old 04-16-06, 11:12 PM
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what about the housing's themselves are they interchangable?
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Old 04-16-06, 11:44 PM
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Yes S5 housings are much bettor then S4 that is a good upgrade IMO.
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