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

s4 or s5 turbo engine?

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Old May 28, 2006 | 09:58 PM
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s4 or s5 turbo engine?
how do i tell if my jdm turbo II engine is a s4 or an s5???

i got it off a guy but he doesnt know what it is!!!
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Old May 29, 2006 | 07:14 AM
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If it's the complete engine, the S5 has the electric OMP. and dual TPS, and plastic thermostat housing. The leading and trailing plugs are farther apart on the S5 housings.
Last edited by Turbonut; May 29, 2006 at 07:17 AM.
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Old May 29, 2006 | 11:09 AM
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this one has the mechanical oil pump so its an s4 thanks alot dude.
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