2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

s4-s5 turbo rotors different?

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Apr 16, 2006 | 08:02 PM

#1

scottfetsh

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From: florida

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

Apr 16, 2006 | 08:11 PM

#2

iceblue

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From: Scotland, USA

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

Apr 16, 2006 | 08:15 PM

#3

snowball

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From: lathrup, MI

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

Apr 16, 2006 | 11:12 PM

#4

REnder

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From: Santa Clarita,CA

what about the housing's themselves are they interchangable?

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Old

Apr 16, 2006 | 11:44 PM

#5

iceblue

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From: Scotland, USA

Yes S5 housings are much bettor then S4 that is a good upgrade IMO.

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rotors, s4, s5, turbo

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