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

street legal 12a mods

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Old Jan 15, 2003 | 12:56 PM
  #26  
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From: https://www2.mazda.com/en/100th/
Originally posted by 82transam
74 was the last year for the Cuda and a bunch of other cool muscle cars too. I know it sucks the first gen will never be free in this state, oh well.
it might be free at some point, for the 79-80 replacement smog parts ae getting hard to come by, new and used. so at some point they are gonna either have to give you a free pass or not let you drive your car

mike
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Old Jan 15, 2003 | 02:07 PM
  #27  
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And here's the qualifier question that can act like a crystal ball to answer what route your state government will pursue....can you get a CHL permit in your state? If no, then they will ban the car....
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Old Jan 15, 2003 | 02:22 PM
  #28  
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From: WDC
with some careful tuning and a summit high flow cat (Catco 2.5 inlet outlet) I passed smog in DC with no problems. car is still loud, but mellow loud. no visible smoke either. I used some marvins mystery oil about a week before the test, drove the **** out of the car and let it idle forever.
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Old Jan 16, 2003 | 12:58 AM
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Regarding "every county in CA getting biannual smog" I don't think thats true. The new law passed late last year that kicked in 1/1/2003 just added the SF Bay Area to the Smog II program (dyno). There was no mention of adding the non-smog counties. See press release in ca.gov website. But, I'm sure the days are numbered until the entire state goes smog. Look at all the money the bureaucrats are missing out on.
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Old Jan 16, 2003 | 01:52 AM
  #30  
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i <3 mississippi
probly be 10-20 yrs before we get smog
most of the population wouldnt have cars if they had to smog
and in a rural place like this
that wouldnt fly
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Old Jan 16, 2003 | 02:09 AM
  #31  
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Smog in CA

Hi everyone,
It is time to smog for my 79 FA. I have a open header and lost all of the air pump, thermal reactor, etc. So I have no way to put those emission junk back on the car. I am thinking: 1)go to the junkyard find a 79, pull all the emission junk and put it on my car. (which will be pain in the butt and it is hard to find a FA) 2)have a muffler shop to weld on two cats after the open header's collector pipe.

What is your opinion on those two idea? I am kinda leaning toward [2] since it is the easiest but I am concerning if the cats will not be enough to lower the HC and CO reading. The car is register in the Bay Area and it is not at the Smog Enhanced area.

I have only couple of weeks left....any suggestion will be greatly appreciated. Thanks
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Old Jan 16, 2003 | 11:28 AM
  #32  
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From: https://www2.mazda.com/en/100th/
we have tested a few cars and we have found this:
stock, 0ppm low hc
no cat, everything else stock, 2000ppm @ idle
no cat no air pump; 3000ppm @idle
cat an no air pump: about 50ppm over the limit

you do have a lot of adjustablitly in the 79 carb so with just a cat you can probalbly get it to barely pass

mike
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Old Jan 16, 2003 | 02:03 PM
  #33  
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So let say.....I install two cat after the open header....and I should pass the reading test right? What about the visual inspection? Because, I have no air pump. How is that going to work?
Thanks
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Old Jan 16, 2003 | 04:00 PM
  #34  
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From: https://www2.mazda.com/en/100th/
Originally posted by nelam
So let say.....I install two cat after the open header....and I should pass the reading test right? What about the visual inspection? Because, I have no air pump. How is that going to work?
Thanks
well, your screwed for the visual, unless you go to a place that doesnt know what they are looking at or will pass it, cause it passes out the tailpipe

mike
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Old Jan 16, 2003 | 04:41 PM
  #35  
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So what do you recommend? Get all the OEM smog junk from a junkyard and put on the car, or get two cats and hope the smog technican doesn't know what he is looking at.
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Old Jan 16, 2003 | 05:04 PM
  #36  
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From: https://www2.mazda.com/en/100th/
i would go for step 2

mike
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Old Jan 16, 2003 | 11:41 PM
  #37  
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Originally posted by nelam

So let say.....I install two cat after the open header....and I should pass the reading test right?
No, for the reason you state yourself...

Originally posted by nelam

..Because, I have no air pump...
Remember, the volume of HC's overwhelms the O2 that escapes the combustion process by a fair amount. You NEED a 3-way cat to burn those HC's cuz the O2 won't be present in sufficient volumecoming out of the exhaust ports to work with the catalytic matrix to break the HC bonds...to be smog legal, the air pump almost certainly has to be put back on to supply the O2 in air to that cat...
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Old Jan 18, 2003 | 04:00 AM
  #38  
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So it seems like, I need to get the smog equipment back on. How hard is this going to be?

Does the air pump off a 13B going to work?

Since I have a header, then that means I need to pull a air pump, the exhaust manifold w/thermal reactor, piping after the reactor, and the AVC underneath the carb. from a junkyard? Anything else.

Man, that's pain in the butt.
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Old Jan 20, 2003 | 11:07 PM
  #39  
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No...you just need to get the air pump back on and get a 3-way cat welded on about 18" from your collector if you're running 26" primaries...call RP in Garland TX for the tech advice regarding the turbo surge valve and relay trick...
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