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

catalytic converter?

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Old 06-01-06, 01:36 AM
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Wants Traction!

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catalytic converter?

Some one told me that catalytic converter help save the life of a rotary. I'm not sure if it is true or not. My car does not have one right. Should it? Its a 83 12a.
Old 06-01-06, 10:07 AM
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a catalytic converter burns any gases left in the exaust. it also gives some slight backpressure. removing it will not hurt anything but our poor enviroment. lol
Old 06-01-06, 02:36 PM
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a clogged one can hurt a rotary over time but i dont think that a good one will cause any damage since i had one on my car for about 185000 miles.
if you dont need emissions weld in a replacement pipe or hollow the thing out.
Old 06-01-06, 02:50 PM
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if you dont have to pass an emmissions test, you can leave it off with no ill effects. if you DO have to pass an emissions test, you'll definatly need one!
Old 06-01-06, 07:41 PM
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All above stated are true and your 83 should have one
Old 06-01-06, 10:13 PM
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I took off my convertor and every now and then it Back fires. Will the back firing hurt my engine? I dont mind but it scares the **** out of people on the road. lol
Old 06-01-06, 10:35 PM
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Muffler, good chance, engine, no.
Old 06-02-06, 12:57 AM
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so simply put, it is fine that i do not have on if i dont have to worry about emisions?
Old 06-02-06, 07:41 AM
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its that simple.
Old 06-02-06, 07:46 PM
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Hi,
A little information on environmental laws,
Series 1 and series 2 RX7's were produced before catalytic converters were compulsory in cars and emmision control laws were passed. Due to this these series did not need a catalytic converter to pass registration or emmision laws. I should state however that this is the case in Australia and i am unsure of other countries legislature.
Secondly an interesting fact about catalytic converters is that they stop working after about 70,000 kilometres so they arent actually doing anything for the environement. All that they are doing is clogging up you exhaust and decresing your power output.
So as other people have stated above, either gut the converter or replace it with straight through pipe.

Ryan
Old 06-02-06, 09:18 PM
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Originally Posted by boxer784
Hi,
A little information on environmental laws,
Series 1 and series 2 RX7's were produced before catalytic converters were compulsory in cars and emmision control laws were passed. Due to this these series did not need a catalytic converter to pass registration or emmision laws. I should state however that this is the case in Australia and i am unsure of other countries legislature.
Secondly an interesting fact about catalytic converters is that they stop working after about 70,000 kilometres so they arent actually doing anything for the environement. All that they are doing is clogging up you exhaust and decresing your power output.
So as other people have stated above, either gut the converter or replace it with straight through pipe.

Ryan
That's close. Series 1 RX-7s didn't have catyletic converters but rather thermal reactors and an exhaust that was able to subdue emissions. Series 2 infact did have catyletic converters, usually a single but sometimes double.
Old 06-02-06, 11:07 PM
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Originally Posted by TORONTO RX7
I took off my convertor and every now and then it Back fires. Will the back firing hurt my engine?

no...maybe some ear drums.....backfiring is the result of fuel still being burned through the exhaust that hasnt completely burned when its in the combusiton chamber
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