Are first gen rx7s reliable?

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07-03-2002, 11:20 AM

#21

SoRRoW

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Quote:

Originally Posted by Rotaryman88' date='Jun 24 2002, 08:32 PM

Quote:

are 12's possible with a 12a?

Not unless you've got boost, lol. I don't even think a fully built 12A w/ a PP port would run 12s...maybe. You'd have to have it gutted and only weigh like 1600lbs w/ over 300HP all motor...but it won't come cheap or easy...

Umm Raphalito Racing from PR had the worlds fastest 12A and i think he was doing 7s with it...

ALSO they did make a 12A Turbo..in Japan that should not be to hard to find..mY friend who grew up in PR says he saw 2 of them here..and there was alot over there..

And you dont have to go turbocharged..

You can get a Supercharger cheaper...

look for Atkins rotarys..

12A supercharger is about $2200.

07-03-2002, 11:30 AM

#22

SoRRoW

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Carburated 7s DONT have a ECU...theres so many little tricks you can do to get more HP out of a carburated 12A...

I was a big beliver of MSD on rotarys..BUT you will be spending alot..

You need 2 MSD boxes..and then 2 coils...

One trick is to get the leading coils...off of a second gen..

stock 12 coils are like 24,000 volts a piece (if I can remeber right)

and second gen is 60,000...

I run a Holley/Racing Beat set up..I dont have any emisson control on..I had the exhast opened up..no cat..etc

Im happy for what I got but im not done..far from being done..

07-04-2002, 10:44 PM

#23

Suparslinc

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Join Date: Mar 2002

Posts: 284

It all depends on how you interpet "ECU".

If you mean a computer, then no, carbed 12A's do not have an ecu.

But if you simply mean "engine control unit", then I believe that mess of emissions control crap, known as the rats nest, is definately an ECU.

07-05-2002, 12:14 PM

#24

SoRRoW

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Well when most peopel say ECU they mean computer

07-05-2002, 09:06 PM

#25

1988RedT2

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Quote:

Originally Posted by lowroller' date='Jun 23 2002, 06:06 PM

OK I'm new to rx7s and I recently got a 1982 first Gen. with the 12A engine in it. The engine bogs and feels underpowered under 3000rpms.

I just thought somebody should mention that compared to a good six or a V-8, the rotary DOES feel mighty weak at low RPM's. Rotaries need about 3k on the tach before they really start pulling.

07-08-2002, 08:43 AM

#26

MIKE-P-28

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Join Date: Oct 2001

Posts: 31

Quote:

Originally Posted by dac' date='Jun 23 2002, 06:35 PM

I would make sure your Catalitic converter isn't clogged. I wouldn't removed it, but 81' was the first year that they got rid of the Thermal reactor and went to straight Converters for cleaner air. If you carb is not working properly, Your converter could very well be clogged.

I second this, could be the cats. I had one here one time like that , I rebuilt the carb, new plugs, woires etc, and still nothing so in deperation I unbolted the cats and BAM it starter and ran perfect.

Good luck

07-23-2002, 02:03 PM

#27

lowroller

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Join Date: Jun 2002

Posts: 73

OK I rebuilt my carb. the carb seems to be running good. but now I've got a new problem it seems to have a vacuum leek. I'm not sure if maybe I crossed one of the vacuum lines. but the engine idles at 1200 rpms for a few seconds and then it dies. I tried to bring the idle down but nothing helps. It has no bottom end tork, and you have to feather it just to drive it. The engine stalls if you press the breaks or pop up the lights. once you get going the carb seems to work fine.

any ideas ?????