13bpower

I couldn't find the answer to this seaching. Can anyone tell me how I would know if I have an s5 turbo or s4 turbo just by looking at it. Please help!!! Need to know soon.
Thanks,
Steve

Juan

iTrader: (28)

s4 cars have the side molding black and have the rectangle lights in the back. Also the front bumper is different.

s5 have the side molding painted the same color as the body, has rount taillights and has a more aggressive looking front bumper.

Another way would be looking at your seatbealts. If they are the automatic sliding ones (slide along the a pillar), most likely its a s5. s4's came with manual seatbelts.

13bpower

Any thing else on the turbo, any #'s or other disticticive differences on the turbo it self. I will try searching again, but the seach engine won't let me use 's4' and 's5'. it says every 'word' has to be at least 3 charicters! sucky

RacerXtreme7

iTrader: (2)

easy,,, the series 4 turbo's manifold and turbine housing mount at a slight angle and have a flapper valve inside the manifold. The series 5's turbine / manifold mating surface is parrallel to the engine block, has no flaper in side, and is a divided unit of equal area turbine inlets were the s4 has different area inlets.

RETed

The compressor housing will say "HT-18S 2S" (or HT18 2S?) on it for a Zenki turbo.&nbsp The Kouki turbo compressor housing will just say "HT-18S".

Look for the twin-scroll mechanism on the turbo exhaust manifold.&nbsp If you have no idea what I'm talking about, you need to find out more before asking questions like this.


-Ted

13bpower

The only usefull information that I could dig up was-

-89-91 T2s have higher compression rotors. Stronger dowl areas. Also there is marking on the bottom of the rotorhousings with a letter in a circle. The newer rotorhousings have I think a z and something else in them. Thats the visual difference.-

The reason I am asking is because I have a s5 manifold and am looking to buy a s5 turbo. The guy I am looking at buying from is not 100% positive if it is an s5 or s4. I am told that a s4 turbo won't bolt onto a s5 manifold, so I don't want to get something that won't fit.

13bpower

The s4 manifold has a flapper in it and the s5 manifold dosent. The s4 manifold mounting surface is not parrallel with the block and the s5 is. If that is right then I have a s4 manifold. The guy who sold it to me didn't know what he had. Any one else know that this is true about the differences in the manifolds?
Thanks for the help everyone

Chris Ng

S4 turbo exhaust side on the left, S5 on the right (the cleaner one) you'll notice the diffrence with the wastegates..



As for the S4 vs S5 manifold, The S5 manifold doesn't have a twin scroll flap or lever on it...

RETed

The only advice I can give to you is tell them get a pic for you.&nbsp If they can't, walk away.&nbsp The difference in price is significant.&nbsp I got screwed on a deal where the seller INSISTED he had a Kouki turbo + manifold to sell.&nbsp $250 was a good deal with a stock IC thrown in (which I didn't need).&nbsp I went through the usual questions...
*Two holes on the exit side of the manifold? (Yes)
*Two identical holes on the turbine inlet side? (Yes)
*NO actuator, arm, and flapper on the turbo exhaust manifold? (No)
*BENT wastegate actuator arm on the turbo? (Yes)
It didn't really surprise me that I got a Zenki turbo set-up in the mail.&nbsp Boy, that was a royal pain of a transaction.



-Ted