So I've got a stock t2 turbo in my garage that i picked up from an auction and i want to use it. I need to get a gasket for between the turbo and the down pipe. My only problem is im not sure if it's a s4 turbo or a s5 turbo. Is there any differences or any way i can tell witch one is witch thanks. Jeremy

 

s4 from 86 through 88 and s5 is 89 to 91 model years, what year is your car?

 

I bought the turbo used and i don't know what year it came off of. I was wondering if maybe i could tell by looking at it??

 

Several ways to tell, one is the S5 hotside is larger because it has a dual wastegate. Also the wastegate arm is a little bent. Also the exhaust flange is square, the S4 exhaust is a little more rounded... I think that is pretty much it...

To sum it up look for the dual wastgate, if its there then its a S5.

Dane

 

Thats my s5 turbo.

 

awesome thanks guys!

 

Gasket from the turbo to the downpipe is the same - S4 and S5.

The turbine housing has a different footprint on the exhaust manifolds but the mating surface to the downpipe is the same configuration.

 

Too bad it's not stock and useless to this thread.

S4 versus S5 turbine inlet flange...




-Ted

 

Does it really matter what series it is?

Same downpipe gasket for either one.

 

When mounting it to an exhaust manifold it matters.

 

Mr Griffith apparently wants to stop his downpipe from leaking - not remove the turbo.

 

o haha I accidentally posted a pic of the t04e instead of my stock turbo. :p

 

For the turbo manifold it matters, but for the DP it is all the same between s4 and s5.