Want to straight pipe my fiero
Printed From: West Coast Fieros
Category: General Fiero Chat
Forum Name: General Talk about Fieros
Forum Description: Just want to chat about fieros? here's the place to make that happen.
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=887
Printed Date: 23 November 2024 at 12:58am
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Topic: Want to straight pipe my fiero
Posted By: kawana
Subject: Want to straight pipe my fiero
Date Posted: 24 September 2008 at 10:09pm
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i posted this over at the .nl but i thought id get your guys input too, perhaps you know some local store to get parts. I want to straight pipe my 2.8, but im not sure how to do it. The cat.converter is welded on right? How could i reattach it(after gutting it) w/o welding it on (dont know how to weld), or is there an aftermarket alternative that can be clamped on or something? Id almost like to buy an aftermarket replacement pipe, and sell the cat.converter to get some $$ back. Parts numbers would be a big + |
Replies:
Posted By: Dr.Fiero
Date Posted: 25 September 2008 at 6:15am
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Best way to do it... Dont. I did it to my '87 shortly after I got it (OooOOo, this'll be cool!). The fun factor wore off about 10 min's after I did it. The car was almost undriveable without wearing foam ear plugs. And it wasn't just me, as anyone that drove in it plugged there ears. |
Posted By: kawana
Date Posted: 25 September 2008 at 10:02am
| lol oh, didn't know it'd make that much of a difference :P Ok then, anyone know where i can get a good replacement cat.? And where would i go to sell my old one? |
Posted By: Matt
Date Posted: 25 September 2008 at 10:41am
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You should be able to cut your cat out of the equation and still have a respectable sounding 2.8 as long as you have a muffler. 2.8L without a muffler sounds awful, unless you're going for that about to die demolition derby sound. Also, If you have time, some money and/or access to different sizes of muffler pipes it's really fun to experiment with the different sounds you can achieve. One example is a Chev 350 with a standard garden tractor muffler with 2 1/2 pipes and a washer drilled out slightly, sounds like Flowmaster 40 series with slightly more bite.  ------------- I wanna go fast. |
Posted By: 85SEnochie
Date Posted: 25 September 2008 at 10:50am
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NICE sounds pretty good I'm shure |
Matt wrote:
Posted By: Matt
Date Posted: 25 September 2008 at 11:06am
I'm not sure if you're making fun of me. 
------------- I wanna go fast. |
Posted By: Capt Fiero
Date Posted: 25 September 2008 at 11:56am
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Just cut your old cat out, go to Canadian Tire, bring the cat with you, find a pipe that just fits over the cat pipe. (so you know it will just fit over the exhaust pipe in the car) But a section of pipe, 2 or 4 clamps. I usually put 2 on either side to make sure it won't leak or come off. Install with clamps and away you go.
Its much easier to simply find an exhaust shop that will do it for you. But if you want to do it yourself its not that hard. As for sound, if you just remove the cat, the sound is actully pretty good, if you remove both the cat and the muffler, its a really bad sound that will drive you nuts. ------------- Capt Fiero 88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
Posted By: D_sensitized
Date Posted: 25 September 2008 at 3:08pm
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My fiero has straight pipes in place of the cat with a resonator in it. The previous owner put in the resonator because just the straight pipes were too loud he said. still had the muffler too. It sounded really nice when it still ran... |
Posted By: kawana
Date Posted: 25 September 2008 at 5:10pm
do you have pictures of those clamps your talking about? |
Posted By: Dr.Fiero
Date Posted: 25 September 2008 at 7:35pm
THIS is what I was referring too when you said "straight pipes". Dave's heard my car with STRAIGHT PIPES. Bleah. I'll never do THAT again! As stated several times above - "delete cat" is fine. And I've had numerous V6's pass aircare without one. 4cyls might not be so lucky. |
Posted By: Matt
Date Posted: 25 September 2008 at 8:48pm
I'm sure it would be fine if you ran a 50/50 Mohawk Premium / Methyl hydrate.  ------------- I wanna go fast. |
Posted By: kawana
Date Posted: 25 September 2008 at 9:51pm
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so does anyone know where i can sell my old cat? How much do they sell for? And what clamps where u talking about? |
Posted By: Capt Fiero
Date Posted: 25 September 2008 at 10:05pm
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I believe they are called West Coast Metal in Langley. They pay about $20 per converter ------------- Capt Fiero 88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
Posted By: Capt Fiero
Date Posted: 27 September 2008 at 5:14am
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Sorry don't have any photo's handy, but its a U-Bolt, with round piece of metal that slids over the U_bolt and has 2 nuts. About 3 bucks each at your local Canadian Tire. Just make sure to get one that fits snug around the pipe. The width of the U should be the same width as the pipe. ------------- Capt Fiero 88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
Posted By: Dr.Fiero
Date Posted: 27 September 2008 at 7:41am
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Since the u-bolt style clamps are somewhat destructive (to seal properly they have to crush the pipe), and they also need to be put on with an impact to work properly, another alternative is a Sealclamp. They're more like a metal sleeve, and have two bolts going sideways. You just slip this over the pipe joint and crank them down evenly. The clamp does the distorting to seal, not the pipe. We use 'em at work all the time. They're made by Donaldson, and work really well. They're NOT cheap though. Well, in comparison to $1.49 u-bolt anyhow. :) You can see 'em here: http://www.emea.donaldson.com/en/exhaust/support/datalibrary/049664.pdf - http://www.emea.donaldson.com/en/exhaust/support/datalibrary /049664.pdf |
Posted By: kawana
Date Posted: 27 September 2008 at 12:32pm
| know any local place i can get em? |
Posted By: Dr.Fiero
Date Posted: 27 September 2008 at 3:04pm
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A quick search on the Donaldson site shows that Finning (not sure if they do retail) is a dealer, as is UAP (read: Napa!). |
Posted By: kawana
Date Posted: 28 September 2008 at 6:34pm
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is this the same thing? edit: cant post a direct link, its part # BK 7333224 on the napa website |
Posted By: kawana
Date Posted: 29 September 2008 at 12:58pm
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well it looks like the cat.converter on my car is held on by those U bolt things you mentioned, there extremely rusted on though lol :P hopefully i can get them off w/o too much trouble. It looks like it was my heat shield that is rattling, the top is almost falling off :P Can those U-bolt clamps be put on w/o the use of an impact wrench, cuz i dont have one.. |