I just looked more closely at the pics, and those do appear to be FD turbine housings. The picture is blurry, but I think that's the case. I suppose somebody could have inserted cosmo CHRAs and comp housing into the FD turbine housing. I wonder if the y-pipe will bolt up?

 

I have seen a LOT of these on eBay listed as rx7 twins. But the hot sides do look like FD manifold - those look like cosmo compressors. Cosmo exhaust manifolds are about the same size but with smaller ports.

I've emailed several of the sellers and they all just give me crap. So I report their auctions. I figure if someone gets stuck with them and they complain, it will help their case if I already reported the auction for misrepresentation.

Dave

 

are the cosmo twins bigger?

 

No, smaller.

Can we see a better pic of the primary comp housing?

I have a set of cosmo twins in storage. If you're desperate I can snag a pic or two next monday. I'm going to search a little more for those pics because I know I have them somewhere.

BTW, does it mate with the FD exhaust mani?

 

y pipe wont bolt up at all. ill try for more pics tomorrow but kinda busy

 

Glad it worked out for you, sorta anyway.

 

the reason they wont bolt up to the y-pipe is because the 2 studs on the fd compressor housings are 180 degrees off than the 2 studs on the cosmo housings...if that makes sense

sort of like up and down studs vs side to side studs

 

side by side pics here

https://www.rx7club.com/showthread.p...=1#post7669649