My son gave me his 88 rx7 non-turbo. He quit using it due to flooding problems. He gave me all his spare parts, as well. Included in these was a first generation carb. Is there a manifold that will let me utilize this. I know fuel injection but since I am on a limited budget, I would like to improve dependability as cheaply as possible. My wife thinks she is going to drive it. (LOL)

 

Then keep it EFI and send the injectors out to get cleaned.Professionally.
Honestly having a Carb is not the best Steady and reliable tune..They require constant adjustment..and that can end up being a pain in the butt when it gets cold,hot,,whatever.
EFI eliminates that crap!
If the ECU and harness etc is still on the car then just return it back to what it was originally..and that is EFI!

 

Flooding is usually due to one of these three things:

1. Engine needs a rebuild. Converting to a carb will not solve this problem. You can check the engine compression to see if the seals are worn. I would do this first before anything else.
Rotary Resurrection - Compression Check

2. Fuel injectors are leaking. Fuel injectors can be cleaned and "rebuilt" for $17 each, or replaced for about $100 each, plus about $6 for the manifold gasket.
Injector Rehab

3. The stock ECU has a flaw in which it will flood the engine if the car is started and shut off quickly, such as when moving it from the driveway to inside the garage. It is easy to avoid this problem by simply letting the engine run for a few minutes. The unflooding procedure is really easy:
Rotary Resurrection - Unflooding

I am not aware of a manifold that will mate a Nikki carb to a 6-port 13B, but I would imagine that you could make a spacer for a Holley manifold or fabricate a custom manifold. However, converting to a carb may not be the best idea because you would need to buy a low-pressure fuel pump, low-pressure fuel pressure regulator, and some type of choke cable, and even then I am not sure how well it would work with the air conditioning. I just don't see how a ghetto setup like this would be reliable.

 

Thanks for the tips. Do I have to modify my compression gauge to use it on a rotary? Also, what should I expect to pay for having the injectors cleanes?

 

Yes, remove the Schrader valve.

Depending on your internet browser, text like this: Injector Rehab should look different than the other text, identified by bold, underlined, and/or a different color text. This is called a "hyperlink". Clicking on it will take your internet browser to another website for more information on a subject. If you click on the Injector Rehab link, you will find pricing information.

You can also try clicking on this hyperlink for more information about compression testing a rotary engine:
Banzai Racing Compression Test

 

Don't use the Nikki! While it's certainly possible to get the nikki to breath more, it's not a bolt on kind of thing. And I know of no adapter to do so.
Plus your fuel injection pump is the wrong pressure and you'll need to rejet the Niki, and then there are the signals the ECu expects to see which will be missing/mia and cause other issues.

Stick with injection!

 

Since this car was meant to be EFI, I would suggest keeping it that way. Plus this will help make sure it doesn't run lean on cold days if your carb isn't set right...