installer67

iTrader: (18)

Hey Guys,
I know how hard "NEW" housings are to find, especially for you 79/80 guys. So when I found this listing on craigslist, I thought I'd share. They say they will mod them for all 81-85s free too. Here's the link
http://seattle.craigslist.org/see/pts/1445917856.html
Hope this helps some of you.
Ray

j_tso

iTrader: (2)

Someone correct me, I thought all RX-7 housings were compatible, except for the EGR port on the rear housing and varying chrome surface material. I know the old 12A housings for RX-2 and 3 had different tension bolt pattern.

salvine

Great find!

workinprogress80

I think Sa housings had the extra port under the exhaust ports for the emissions, they go into the thermal reactor i think....(correct me if im wrong)

RustyRacer

^ Correct. Couldn't figure out if the RB header I bought would accomodate, but it did. Thats why the seal has those cut outs.

7aull

iTrader: (2)

Prob with SA housings is that they are the only versions NOT interchangeable front-to-rear, like the FBs are. That's what make them so annoyingly unique...

Stu Aull
80GS
Alaska

ourxseven

iTrader: (1)

stu, why is that exactly ?

DivinDriver

iTrader: (15)

The exhaust ports are asymmetric, for one thing. Check out the gasket:

http://www.mazdatrix.com/e6.htm

Passages for the secondary air (which fed in from the bottom of the thermal reactor) are different for front and rear rotor.

7aull

iTrader: (2)

DD nailed it...
attached pic of my housings, note openings BELOW exhaust ports: mirror image of ea other...

Probably thanks to Old School reactor technology the FB's left behind
Stu Aull
80GS
Alaska

j_tso

iTrader: (2)

Why would a header have an accommodation for a thermal reactor?

RustyRacer

I didn't expect it to accomodate, but I didn't know if it should allow the air out of those holes. Besides, how would I know whether it would need to accomodate, this is my first rotary. It works and I have the rat's nest cleared out. Just drive it and wreak havoc on people's windshields and quality of breathing.

DivinDriver

iTrader: (15)

Yupyup... When they switched to the Cat exhaust, the secondary air injection ports no longer routed thru the exhaust face.

And on the California-specific front housing for the SA, there's an additional port for the EGR passage, making a total of five passages thru the gasket.

When switching to a header, all those extra ports need to get blocked off by the header flange.