1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

new to 1st gen 12a rx7s, rotary engine, and racing scene.

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Old 05-16-14, 08:40 PM
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new to 1st gen 12a rx7s, rotary engine, and racing scene.

What carb will fit on the stock intake manifold on my 82 rx7? I also have a lot of missing, unattached, and capped vacum hoses on the stock carb.
Old 05-16-14, 08:42 PM
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The stock carb NEEDS to come off its at the end of its rope
Old 05-17-14, 06:19 AM
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'85 12a
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The stock carb is perfect for a stock engine. It may need a rebuild, but it's a as good as it gets. You may want to address the vacuum line and capping issue. Learn what you have before going on to the next thing.
Old 05-17-14, 08:32 AM
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Sounds to me like someone has removed the rats nest in this one? Is the vacuum hoses and solenoids rack still on the top of your engine?
Old 05-17-14, 10:57 AM
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79 w 13B4port

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I agree with Cookboy, it will be waay easier to rebuild the Nikki than to adapt something else.

If you dont want to go that route then the best alternative would be to replace the carb and intake manifold to either a holley or webber.
Old 05-17-14, 02:05 PM
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'85 12a
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Drop tank. Clean tank and fuel pickup. Put a new filter sock on fuel pickup. Replace lines to and from tank.
Read all you can about nikki rebuilding and modifying. Read all you can about the rats nest, its removal, and what needs to be altered/capped for proper timing advance and crankcase ventilation in its absence.
By now it should be apparent that the Nikki carb is the best intake for a stock 12a.
Buy a rebuild kit for your Nikki. Rebuild it.
Drive the car and delight in the work you did.
Buy another Nikki and modify it as far as your skills will allow.
This is the path to 12a happiness.
Old 05-18-14, 08:17 AM
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just dropping a quick note in, if you're into the racing scene I'd stick to the later versions due to easier obtainability for parts, and the EFI/13B part as well.

First generation still kicks though, but being torqueless needs you to pick your fights right.
Old 05-18-14, 09:26 AM
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My wife bought me 2 RX-7s

 
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Yes, if you are to become a FB master, listen to the wise words of Cookboy.

If you intend to race in 'the scene' then you've picked entirely the wrong car.
Old 05-22-14, 05:10 PM
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the other day my wife smoked me with our chrysler town and country.....hilarious!!! I'm going to stay as far away as possible from any more races in the rx7.....still fun to drive though!
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