Just curious if the flanges on the 20b turbos match the twins from the 13b RE or REW?

No, the twins from a 20B are longer, and the spacing between the actual exhuast inlets is further apart.

YEAH I know that!



I want to know if the flange for the mani to the turbos on BOTH are teh same.

Oh, my mistake. I will look here in a bit and do some measuring. I have both sets of turbos

That would be awesome, thanks.

No they are different.....the 20B manifold is on top

https://i33.photobucket.com/albums/d...4Image0003.jpg



But I was surprised to compare the 20B twins with the 13B RE twins....not too much overall length difference

The 20B twins are at the top

https://i33.photobucket.com/albums/d...4Image0002.jpg

Thats going to need a hell of a spacer, but I think it can be done.



Thanks for the pic Joe.





But the port for the primary runner looks WAY bigger. HMMMMMMMMM

it is, 20b puts all 3 rotors into the primary turbo, and then @4000, the rear rotor goes to the rear turbo. the stock fc turbo should fit in the front of the 20b set.



the 20b has an ht-15, and an ht-10, the 13b cosmo is 2 ht-10's, t2 is an ht-18 and the fd is ht-12's....

Excellent info j9fd3s, I was wondering what the numbers were for each turbo.

Just got thinking.....



So I could put a stock T2 compressor housing and wheel on the front of the 20B twins?

Would I also be able to put the compressor housing and wheel from a set of FD twins on the rear of the 20B twins?



The end result would be an ht-18 and a ht-12.....intresting!



Hmmmm.....this could be a pretty decent upgrade for someone who wanted to run the stock twins on their 20B.