2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

150 $ exhaust

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Old Oct 9, 2007 | 09:15 PM
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From: Elmira, Ny
150 $ exhaust

Is it possible to buy or make a 150$ exhaust system from the header back That is decent? I need it to last for about a year and i don't want it to be too crappy. I read that the RX's get really hot so do I need to have stainless piping? Let me know please, Thanks.

~Ted
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Old Oct 9, 2007 | 09:21 PM
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i would gutt the monolitics (mini cats) with a long screw driver, and buy a straight pipe/ cat-replacement pipe/ test pipe..... then try to to find a cheap exhaust from the y-pipe baack.. you'll back frie llike a dream!! for cheap too
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Old Oct 9, 2007 | 09:27 PM
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Well I need it to pass inspection. What happened is I just bought the car and the exhaust is rotted out. it was broken right before the main cat. therefore all thats on there right now is the header and the two mini cats. I live in NY and they do emissions with obd2 I know this is too old but do they do other emissions tests for older cars?
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Old Oct 9, 2007 | 10:03 PM
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Welll, in Illinois, we dont have emissions testing for cars that are -1995.
Dunno check with the emission place, I dont know your laws...
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Old Oct 9, 2007 | 10:27 PM
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get another cat from a junk yard and buy a 18" glass pack and turn down from an exhaust shop and have them weld it up, i think as long as the exhaust is turned down right before the rear end it is legal(you might want to check).
cat.....maybe $30
glass pack....$20
turn down.....$5
weld cost.......around $35
grand total $90
this is what i did to my 88GXL....it was loud and cheap!!! of course i was running straight pipe.
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Old Oct 9, 2007 | 10:35 PM
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what do you mean turned down? like bent facing the road? I can weld it myself. and also I dont need stainless piping?
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Old Oct 9, 2007 | 10:48 PM
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Well I could Reuse this part if i cleaned it up.... Right? Its the 7's stock pipe that was just hanging there when i bought it.






Last edited by thebigbluecan; Oct 9, 2007 at 11:05 PM.
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Old Oct 9, 2007 | 10:58 PM
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I wouldn't cheap out like that...
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Old Oct 9, 2007 | 11:02 PM
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From: Elmira, Ny
Originally Posted by Toyo Kogyo
I wouldn't cheap out like that...
Thats what i was thinking. any other Ideas I have 150 $ to spend.

Last edited by thebigbluecan; Oct 9, 2007 at 11:07 PM.
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Old Oct 9, 2007 | 11:38 PM
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well..... with only 150$ you'd be cheaping out anyway! lol! I say re-use it.
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Old Oct 10, 2007 | 12:20 AM
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Its only temporary but would it be ok to use regular exhaust piping off of the two small cats then to the main cat and regular piping the rest of the way down? mabie a glass pack after the main cat? or would it get too hot?
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Old Oct 10, 2007 | 12:26 AM
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there was a thread on here a couple of days ago about glass packs and how rotaries like to eat them alive.....
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Old Oct 10, 2007 | 12:29 AM
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I remember that thats why i was asking about getting hot. If they get hot enough to melt glass packs it probably would eat regular exhaust piping. What I mean by regular piping i mean this cheap crap.... Link: http://i210.photobucket.com/albums/b...n/DSCN1621.jpg

Last edited by thebigbluecan; Oct 10, 2007 at 12:36 AM.
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Old Oct 10, 2007 | 01:14 AM
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Originally Posted by thebigbluecan
. I live in NY and they do emissions with obd2 I know this is too old but do they do other emissions tests for older cars?
They just do a visual inspection of the emissions equipment in most counties upstate(North of NYC) for any car older than OBD2 (older than 95). So you could just get by with everything in place even if it doesn't function. Last time I got my FC inspected the guy just printed off the sticker and slapped it on the windshield... the only criteria it had to meet was that I drove it there and that it stopped when I drove it in the shop.
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Old Oct 10, 2007 | 01:17 AM
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Are you a fabricator? Do you have a welder? Do you have access to scrap tubing? Do you already have mufflers? If the answer to all of the above is yes, then absolutely you can build a cheap exhaust.
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Old Oct 10, 2007 | 01:21 AM
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Originally Posted by Nismonic
They just do a visual inspection of the emissions equipment in most counties upstate(North of NYC) for any car older than OBD2 (older than 95). So you could just get by with everything in place even if it doesn't function. Last time I got my FC inspected the guy just printed off the sticker and slapped it on the windshield... the only criteria it had to meet was that I drove it there and that it stopped when I drove it in the shop.
Lucky you... here in Pa, I still have to go through the sniff test
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Old Oct 10, 2007 | 01:39 AM
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From: Elmira, Ny
Originally Posted by Nismonic
They just do a visual inspection of the emissions equipment in most counties upstate(North of NYC) for any car older than OBD2 (older than 95). So you could just get by with everything in place even if it doesn't function. Last time I got my FC inspected the guy just printed off the sticker and slapped it on the windshield... the only criteria it had to meet was that I drove it there and that it stopped when I drove it in the shop.
Thats good to know. Ill check with shops around to see what the laws are here.

Originally Posted by gross polluter
Are you a fabricator? Do you have a welder? Do you have access to scrap tubing? Do you already have mufflers? If the answer to all of the above is yes, then absolutely you can build a cheap exhaust.
Yes i'm a pretty good fabricator, I have a stick welder but i barrow my friends tig welder all the time. And no scrap tubing. which sucks.
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Old Oct 10, 2007 | 08:46 AM
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Anything cheap is going to be stupid loud, sound like a weed whacker and probably not last 6 months.

In theory the local exhaust shop should be capable of creating an inexpensive system in stainless but it will probably cost more then $150. If you know someone who has done this work before it's only an afternoon with a welder, some tubing and a muffler. But again, materials cost will likely be more then $150.
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Old Oct 10, 2007 | 08:56 AM
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I guess ill just have to save up more money then Oh well the outcome will be better. Whats a good Cheaper exhaust to buy. about 300$ or so?
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Old Oct 10, 2007 | 09:08 AM
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motoria off ebay is great for the price.
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Old Oct 10, 2007 | 09:09 AM
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Originally Posted by Aaron Cake
Anything cheap is going to be stupid loud, sound like a weed whacker and probably not last 6 months.

In theory the local exhaust shop should be capable of creating an inexpensive system in stainless but it will probably cost more then $150. If you know someone who has done this work before it's only an afternoon with a welder, some tubing and a muffler. But again, materials cost will likely be more then $150.
not necessarily true
I had my local shop do a 2.5" single pipe from the cat on back and a generic round cannister muffler (which looked surprisingly like the original ones)
and it has lasted over 2 years so far with little sign of giving out
cost me $125
The OP should stop by his local muffler shop to find out what he can and cannot get away with, let them know your budget and what you are trying to do

Last edited by niburu; Oct 10, 2007 at 09:17 AM.
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Old Oct 10, 2007 | 12:10 PM
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Teach yourself to weld and reuse the stock cans.
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Old Oct 10, 2007 | 01:26 PM
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He already said he can weld.
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Old Oct 10, 2007 | 01:47 PM
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stock exhausts around here are given away, like $20-$0 no rust area i have a dual fart can setup in my back yard just sitting
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Old Oct 10, 2007 | 05:47 PM
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Originally Posted by Nismonic
They just do a visual inspection of the emissions equipment in most counties upstate(North of NYC) for any car older than OBD2 (older than 95). So you could just get by with everything in place even if it doesn't function. Last time I got my FC inspected the guy just printed off the sticker and slapped it on the windshield... the only criteria it had to meet was that I drove it there and that it stopped when I drove it in the shop.
WOW!!! i had to wipe tears after reading that one!!!!! i had the same thing happen when i had my car "inspected" the guy that did the inspection was like "WOHA!! AN RX7!!" and the turned on the lights and slapped the inspection sticker on!!! what fun that was!!
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