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 Post subject: 74 Rx2 Intake/Exhaust Questions
PostPosted: Fri Dec 06, 2013 7:14 am 
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Joined: Mon Nov 25, 2013 8:02 am
Posts: 67
Location: Salt lake City, Utah
Couple Questions about Intake/Exhaust

Will the 12a FB/SA Pacesetter fit our Rx2??

Benefits of keeping Stock Emissions? (besides emissions... lol)

Whats the Best Carb upgrade? (i'm liking the Weber or similar look/idea)

Eventually i'm going to 13b 4 port. anyone with the setup currently running N/A Headers? worried about clearance issues

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Jake B.
1989 Mazda Rx7 GTUs - BridgePort 6 Port mmmmmmm
1974 Mazda Rx2 Sedan - Home, and Cleaning her up!


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 Post subject: Re: 74 Rx2 Intake/Exhaust Questions
PostPosted: Fri Dec 06, 2013 6:11 pm 

Joined: Thu Aug 13, 2009 7:27 am
Posts: 350
Location: salt lake city
yes. its the late model block so all the rx7 12a stuff will work no problem.

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 Post subject: Re: 74 Rx2 Intake/Exhaust Questions
PostPosted: Fri Dec 06, 2013 8:05 pm 
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Joined: Mon Nov 25, 2013 8:02 am
Posts: 67
Location: Salt lake City, Utah
thanks buddy ^_^

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Jake B.
1989 Mazda Rx7 GTUs - BridgePort 6 Port mmmmmmm
1974 Mazda Rx2 Sedan - Home, and Cleaning her up!


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 Post subject: Re: 74 Rx2 Intake/Exhaust Questions
PostPosted: Sat Dec 07, 2013 10:32 am 

Joined: Sun Feb 15, 2009 1:34 am
Posts: 88
Location: san jose, ca, usa
derek wrote:
yes. its the late model block so all the rx7 12a stuff will work no problem.


I doubt that headers for a first gen rx-7 will clear the firewall and floor pan of an rx-2. The engine sits pretty low in the rx-7 so the exhaust has a straight shot under the car, whereas on the rx-2 it must go down a few inches before it can clear the firewall. I've got 2 rx-2s with first gen 12A's, and on both I had to modify RB headers to clear the floor. They should bolt up to a 74 spec engine but clearance out the back will kill you. Lmk if you have any Q's.


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 Post subject: Re: 74 Rx2 Intake/Exhaust Questions
PostPosted: Sat Dec 07, 2013 11:50 am 
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Joined: Mon Nov 25, 2013 8:02 am
Posts: 67
Location: Salt lake City, Utah
ozzyincali wrote:
derek wrote:
yes. its the late model block so all the rx7 12a stuff will work no problem.


I doubt that headers for a first gen rx-7 will clear the firewall and floor pan of an rx-2. The engine sits pretty low in the rx-7 so the exhaust has a straight shot under the car, whereas on the rx-2 it must go down a few inches before it can clear the firewall. I've got 2 rx-2s with first gen 12A's, and on both I had to modify RB headers to clear the floor. They should bolt up to a 74 spec engine but clearance out the back will kill you. Lmk if you have any Q's.


awesome, thats what i was worried about. thank you. i'll definatly be hitting you up. i love the Rotary sound and can't wait to get a nice exhaust system on the Rx2

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Jake B.
1989 Mazda Rx7 GTUs - BridgePort 6 Port mmmmmmm
1974 Mazda Rx2 Sedan - Home, and Cleaning her up!


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 Post subject: Re: 74 Rx2 Intake/Exhaust Questions
PostPosted: Thu Dec 12, 2013 2:07 am 
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Joined: Wed Jan 18, 2012 11:59 am
Posts: 36
Location: Seattle
Please note that if you get a pacesetter you will quite likely have to modify it just to make it work, like possibly even re-weld the header flange. They are notorious for not giving one shit about how the product actually fits on the engine or car.

If you're going to have to modify or custom fab anyway, I'd suggest a dis-assembled header kit from Racing Beat.

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 Post subject: Re: 74 Rx2 Intake/Exhaust Questions
PostPosted: Thu Dec 12, 2013 7:19 am 
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Joined: Mon Nov 25, 2013 8:02 am
Posts: 67
Location: Salt lake City, Utah
ioTus wrote:
Please note that if you get a pacesetter you will quite likely have to modify it just to make it work, like possibly even re-weld the header flange. They are notorious for not giving one shit about how the product actually fits on the engine or car.

If you're going to have to modify or custom fab anyway, I'd suggest a dis-assembled header kit from Racing Beat.



good to know, thank you. i've been using pacesetter headers on my FC for while. only thing i've found is that my FC loves to crack them lol but a lil zap zap tig and they are brand new again lol

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1989 Mazda Rx7 GTUs - BridgePort 6 Port mmmmmmm
1974 Mazda Rx2 Sedan - Home, and Cleaning her up!


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