Catalytic Converter
11-05-05, 07:12 PM
#1
smells like rotary
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Catalytic Converter
I tried doing a search but couldn't really find the info I'm looking for. I just bought an '88 na and the cat has a rust hole in it. Well I need to get it emissions tested so I was planning on getting a high flow universal cat and having an exhaust shop weld it in. Now I'm wondering if I can just use any cat because rotarys run hot and burn oil so I'm thinking that a regular universal cat will get gunked up or melted out pretty quick. So basically I'm looking for a reccomendation for a cat (cheaper the better so no OEM) Also it's the cat that's just before the y-pipe.
Last edited by gscully; 11-05-05 at 07:23 PM.
11-05-05, 07:49 PM
#2
Try this
This thread has info that will help you with the entire process, including a part number for a fine replacement cat.
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/emission-testing-texas-style-465422/
Good luck!
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/emission-testing-texas-style-465422/
Good luck!
11-05-05, 08:08 PM
#3
smells like rotary
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Thanks for the link $120 for a universal cat seems steep, I picked up a 2.5" inlet/outlet carsound highflow cat a years ago for ~$70 I'm just wondering if any universal cat will withstand the heat. I think Magnaflow markets their cats in canada under the carsound name, I checked ebay for magnaflow cats and the box looks identical to the carsound one.
11-05-05, 08:42 PM
#4
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You can do what i did, and just google for a bolt on replacement. I picked up a bolt on to replace all the cats for $150 I think. Worked out nicely and i passed emissions in Colorado with it. 
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11-06-05, 03:59 PM
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I used Corksports replacement straight pipe works great but your not gonna pass emissions. I had one of those universal cats, burned it out in like 2 or 3 months. Get a cat thats made for the rx7.
11-06-05, 05:10 PM
#10
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Summit has a bolt on set for less than $200. It has the precat and main. It's much lighter than stock too. Do a search on my S/N and you'll find a good thread on it.
11-06-05, 06:55 PM
#11
Originally Posted by inflatablepets
Summit has a bolt on set for less than $200. It has the precat and main. It's much lighter than stock too. Do a search on my S/N and you'll find a good thread on it.
And for straight pipe. Go with a RB presilencer. You won't regret it (otherwise LOUD).
The bolt on options are:
RB Downpipe/Presilencer
Bonez Racepipe
11-07-05, 06:08 AM
#13
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Originally Posted by Jager
Because its cheap and burns out.
And for straight pipe. Go with a RB presilencer. You won't regret it (otherwise LOUD).
The bolt on options are:
RB Downpipe/Presilencer
Bonez Racepipe
And for straight pipe. Go with a RB presilencer. You won't regret it (otherwise LOUD).
The bolt on options are:
RB Downpipe/Presilencer
Bonez Racepipe
11-07-05, 07:26 PM
#16
numba 1 stunna
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Originally Posted by Jager
Just buy a Bonez cat and have something that'll last for a long time.
That's just me.
Any other cats will get burnt threw pretty quickly.
That's just me.
Any other cats will get burnt threw pretty quickly.
do what he said.. lol.. actually i have a bonez highflow cat 2.5 inlet n outlet.. works great
11-07-05, 08:57 PM
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Originally Posted by 88mazdarx7turbo
do what he said.. lol.. actually i have a bonez highflow cat 2.5 inlet n outlet.. works great
Should I look into the Bönez Superflo System which consists of a "2.5" piping feeds into a pre-silencer before feeding into our high flow catalytic converter." or the Bönez Dual Cat System - 86-91 which is a "2.25" piping feeds two high flow catalytic converters."
Basically one has two cats and the other has one with a pre-silencer. Which one should I get? What is the advantage to having two cats and will I be able to pass California smog with a pre-silencer and a hi-flow cat?
11-08-05, 09:26 PM
#20
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CARSOUND Direct-Fit, Pre-OBDII High-Flow Catalytic Converter (Main + Intermediate + Front Converter) Mazda RX-7
Regular price: $348.00
Sale price: $155.00
does this mean that this replaces all the stock cat's?
Regular price: $348.00
Sale price: $155.00
does this mean that this replaces all the stock cat's?
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