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

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Old 07-17-02, 08:11 PM
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Moroso Spiral Flow Mufflers

are these worth getting or will they be to loud or burn up they are only 50 bucks each need advice my old mufflers rotting off



http://www.jegs.com/cgi-bin/ncommerc...38&prmenbr=361
Old 07-17-02, 08:33 PM
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I have one sitting right beside me, but I havent had time to make a new exhaust using it yet. Hopefully within 2 weeks I should have it on.
Old 07-17-02, 08:36 PM
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cool you have to let me know how it works out are you planning on running any other muffler with it or just the spiral flow muffler

Last edited by lowrider65; 07-17-02 at 08:42 PM.
Old 07-17-02, 08:49 PM
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Ill also be running a pair of 24" glasspacks repacked with SS wool. Im going to have my dual outlet headers, a collector, the 3'in/out moroso muffler, then another collector run backwards, my 2 SS packed glasspacks, then a pipe exiting right in front of the rear wheels on either side.
Old 07-17-02, 09:05 PM
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how did you repack the glasspacks with SS
Old 07-17-02, 09:35 PM
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Originally posted by mazdaspeed7
Im going to have my dual outlet headers, a collector, the 3'in/out moroso muffler, then another collector run backwards

Ok, doesn't that completely eliminate the purpose of the dual header in the first place?

A collector followed by another collector sounds fairly restrictive to me....
Old 07-17-02, 10:37 PM
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Originally posted by autocrash



Ok, doesn't that completely eliminate the purpose of the dual header in the first place?

A collector followed by another collector sounds fairly restrictive to me....
Not really, considering the pipe size Im using. 3" for the single part, and 2.25" for the dual part.

Im using the dual outlet header because I already have it. I currently have a true dual exhaust, and Im not happy with it, so Im going to a tuned collected system. the already collected headers arent set up ideally, especially for a heavily modded car.

As for the glasspacks, I cut them open, stuffed with some heavy SS wool, and welded them back.
Old 07-17-02, 10:44 PM
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Cool cool


Originally posted by mazdaspeed7
I currently have a true dual exhaust, and Im not happy with it

Why not happy with the true dual??
Old 07-17-02, 11:03 PM
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Theres a FC i see crusing around my area sometimes, he has those mufflers on it. It sounds good, pretty low and deep tone. I've only seen it like 3 or 4 times, cant ever get to talk to him.
Old 07-17-02, 11:20 PM
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Originally posted by autocrash
Cool cool





Why not happy with the true dual??
Sounds like a weedeater on crack/steroids. Not to mention I would get more power out of a collected exhaust, a cleaner exhaust(main reason), and Ill shave about 30 lbs from my heavy *** mufflers.
Old 07-18-02, 05:52 PM
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Old 07-18-02, 06:01 PM
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How is this supposed to "reduce backpressure"?




Last time I checked air liked to flow in straight lines, not in a spiral...
Old 07-18-02, 06:16 PM
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Originally posted by mazdaspeed7

Sounds like a weedeater on crack/steroids. Not to mention I would get more power out of a collected exhaust, a cleaner exhaust(main reason), and Ill shave about 30 lbs from my heavy *** mufflers.

but thats what it is... a weed-eater on crack!!

Gotta be proud of what you drive... lol....
Old 07-18-02, 08:08 PM
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All those "baffled" mufflers eventually blow the baffle welds, and you end up with a plugged muffler.&nbsp This is also true of the Flowmaster type mufflers with just welded baffles inside.&nbsp The rotary engine generates a lot more heat with stronger exhaust pulses that hammer these types of mufflers.


-Ted
Old 07-19-02, 01:43 AM
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Old 02-14-05, 04:04 PM
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oops
Old 02-14-05, 04:41 PM
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i just got mine in after the cat, i had to try something and it seems to be working well
( i'm running RB headers, to bonez cat , to moroso sprial tech to apexi N1) it sounds like a rx8 with a cat back
Old 02-14-05, 05:26 PM
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How many miles?
Old 02-15-05, 11:06 AM
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Originally Posted by This is
How many miles?
about 1,000 miles on it so far
Old 02-15-05, 03:39 PM
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Originally Posted by NZConvertible
How is this supposed to "reduce backpressure"?


Last time I checked air liked to flow in straight lines, not in a spiral...
Agreed, I don't understand how that would Decrease back pressure? I am not entirely sure I would believe that shot, Unless there is some sort of really ingenious Fluid Dynamic Engineering going on in that thing!
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