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

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Old 10-03-06, 08:53 PM
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Engine verification

I looked in the F.A.Q. thread and couldn't find this. Is there a way that I can tell if my engine, that I just got in, is an S5 or S4???
Old 10-03-06, 08:57 PM
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Does it have an EGR valve? If so, its s4. If not, its s5.
Edit: or you can tell by looking at the rotor housings.
http://www.banzairacing.net/faq_housings_ID.htm

Last edited by Sideways7; 10-03-06 at 09:04 PM.
Old 10-03-06, 09:11 PM
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Thanks ALOT man!
Old 10-03-06, 09:51 PM
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Umm... I just found out that my engine is S5 and my car is an S4. I looked around a bit and I forgot the name of the wiring piece... but isn't there some easy way to buy that wiring piece to make the S4 to S5 swap easier? Any input would be appreciated.
Old 10-03-06, 10:32 PM
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So do you have an old engine that is an s4? If you do, you need to swap some parts over from it. If not, you have to find those parts elsewhere or use all of the elctronics from an s5 (a HUGE pain in the ***.)
Here is how to do it the easy (and better) way: http://www.rotaryresurrection.com/2n...o_s4_swap.html
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