Ok before you guys get pissed at me i tried serching and the search function is barley working to say the least, almost anything i type in wont serch for this particular subject.

Ok so i just wanted to know if i get a s5 turbo how hard is it to install in a s4 TII? Any mods at all i need to do? Any special manifold?
Thanks!

 

You'll need the s-5 turbo and manifold but you'll have to use the oil return line from the s-4.

crispeed
87 Rx-7 TII
9.204@150.47mph
2600lbs
un-tubbed

 

crispeed
87 Rx-7 TII
9.204@150.47mph
2600lbs
un-tubbed

Holy **** man what do you have under your hood? My dream is to make my TII that fast...

 

same as install of the S4 turbo/manifold, it's better to take out the turbo and manifold as a whole, alot easier for me, then you use 10mm socket i believe and take out the oil lines from the S4 and re-use them, i forgot about the water lines, i think i bent them just a little to get it where i want it, it was prolly bent before because the turbo wasn't in great of a shape to start with.

 

Don't forget to cap the twin-scroll vac line.

 

Heff,This must be comming from my engine right? Could you tell me where it is?
Im going to be following the hanes for this install so please guys other than what youve mentioned is there anything else i should know than whats in the haynes??
Thanks a lot

 

The Twin scroll has a hard line going to the actuator that conrols the valve inside the manifold. You will be removing all of this so follow that hard line up to wher it goes and cap it there.

You can use the S5 oil return but you would need the small pipe that comes from the front cover from the s5 as well. The S4 and S5 have different length oil returns so you have to use all the pieces from one or the other but you cannot mix them.