Ok i was told to search but couldnt find a thread on this. I'd really appreciate it if somebody could tell me what is needed. The engine set would come complet with tran, ecu, complete wiring, a/c, power steering, very good condition and thinking bout gettin it if compression comes out good but i wanna know just how complicated it would be. For now i only know i would need to change the fuel pump and something else in the fuel system but i need to kno what else needs to change or just point me to a thread which would have this info. Thanks for your time and help.

 

this swap is pretty complicated im almost done with mine it truly is a pain in the *** lol.
i recommend just staying in the series, but ill help you out heres the list lol
i put a s5 turbo engine in my 86 gxl
---------------------------------------------------------------

-new front cover
-new omp
-new linkage for omp
-turbo drain back tube
-s4 turbo throttle body
-s4 turbo ecu
-driveshaft for the swap
-turbo downpipe
-turbo waterpump
theres alot of splicing and bypassing so beware lol.
youll have to use your s5 injectors so youll have to bypass your solenoid resistor package, im still in the middle of figuring out where all the new vacuum lines are going.
get a very very good wiring diagram for both series and very very good vacuum diagrams.
many people dont do this swap so its kinda hard to get your questions ansswered but if you do it ill help you out if you message me.
again the biggest problem ive come through is with the wiring, its confusing as hell , id tell you what plugs to splice and what not but i frankly dont remember lol, if i took a look at my engine bay id see from the labels but im working right now, if you want me to take a pic of the rats nest of wiring for you i will do so upon request, haha GLHF.

 

oh i didnt see that your chassis was already turbo so you get to save like 80 bucks and keep your ecu.
i think your s4 turbo fuel pump might work for the time being. since the s5 is all eletrical you can either block your omp pump off and run premix or buy the s4 turbo one and mess around with the linkage

 

o MAN... Well that sucks i guess am going to hav to stick to rebuilding the S4 huh?? I am time pressure because the cars been there TOO long and i want to get it running soon and the S5 swap seems to take a LIL longer lol. Well thank yuou anyways man...

 

s4 is actually a better block .. lower compression

 

o well dats somethin gud for me dan.