Hey guys im recently bought a SA RX-7 with 2 engines.
One of them was already dissambled because the pre-owner already ordered 2 new rotor housings.

Now I have the problem that the new Housings doesnt really fit.

So my real question is what type of 12a housing are they

 

Those are early dual dizzy 12A housings from the early 1970's. They have one less tension bolt and will not work with the 1979 or later 12A.

Parts for these are hard to find and not really desirable. I just sold a twin dizzy complete engine and a boat load of spare parts last year. They really aren't worth building. If you decide you want to build an engine with them, I have a front cover and a few dizzies. I think I also have a brand new water pump. The front cover and water pump are different then the 1979 and later 12As.

 

are those for the 5 mm carbon seals or did Mazda use the 3 mm seals with those, too?

 

These are for the 6mm carbon seals rotors. The rotors also had double (two slots) for side seals.

 

Thx for the fast answer.

After that im going to sell them because i dont need them