hey guys im looking at rebuilding my 13b in my FD, i was just wondering if ALL 13b housings are the same cause im going to replace my rear one.

not all the same for the fd stick with the fd and do not use any other. the port timing was differnt on the fd

okay now is there a difference between front and rear housings? or are they the same

^They're the same.



More info here -------> http://www.rotaryresurrection.com/3rdgen/t...ng_differs.html

The front and rear rotor housings are different. The passage from the Air Control Valve runs down the back of the front housing and down the front of the rear housing. If you swap them over your Air pump and ACV will be useless and your car will not pass emmision test.

Guess I forgot since deleting all emissions. I stand corrected. Thanks.

Now that I think about it, I'm not sure both will have knock sensor ports either.

Appologies for the OP.

okay no problem im not going to be running an air pump anyway so it shouldent matter all that much