so I bought a used turbo hoping it would fit my 88 t2. well I didn't know what the flange looked like until I bought the turbo and tried to install it. the turbo I bought has a 4 bolt rectangular pattern, my 88 exhaust manifold has an offset bolt. so I'm guessing this new turbo is for an s5, will a 91 turbo exhaust manifold fit my 88 so I can bolt up this turbo? any help is greatly appreciated. Thanks.

 

The S5 (89-91) turbo with manifold is widely acknowledged to be an improvement over the S4 (87-88) and should bolt right up.

 

...And remember; It's not the size, it's how you use it!

 

I dont think its widly bettor or bettor at all. It just uses V inside the mani instead of a twin scroll. The turbo has a slightly larger WG.



What turbo did you buy?

 

I bought a knightsport turbo off ebay. It's a hitachi only has a bigger compressor wheel. When I find a s5 manifold, do I just remove that vacuum pot that is on my s4 manifold? or is it gonna be more complicated than that?

 

nope you just cap off the twin scroll

 

You sure you have an S5 turbo? Picks?

 

turbo flanges, left is stock s4, right is knighsport hitachi (i think s5 flange)

 

sorry for the crummy cellphone pics, here are some better ones