Exhaust/Muffler Question -- Restrictive or NOT Restrictive?
07-12-04, 03:53 PM
#1
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Exhaust/Muffler Question -- Restrictive or NOT Restrictive?
Ok.... I need to know what you all think in order to settle a friendly argument between myself and another member....
Take the Flowmaster Series 40 (just as an example) and one of these:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7910716602
Which one is LESS restrictive?
Here's my theory... Yes, I know that FM makes a damn good muffler and the theory behind it and how it's supposed to divide the air up and it's supposed to have very low restrictive air flow.... but my thought is this....
The other one (using the picture for this one on eBay PURELY AS AN EXAMPLE) is to the point that you could literally drop a golf ball straight through the pipe... you can't do that with a FM.
So, what do YOU think? Which is less restrictive? (Granted, yes, I know that the difference could be so miniscule that it wouldn't really matter much, but still....)
Your opinions are needed!
Take the Flowmaster Series 40 (just as an example) and one of these:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7910716602
Which one is LESS restrictive?
Here's my theory... Yes, I know that FM makes a damn good muffler and the theory behind it and how it's supposed to divide the air up and it's supposed to have very low restrictive air flow.... but my thought is this....
The other one (using the picture for this one on eBay PURELY AS AN EXAMPLE) is to the point that you could literally drop a golf ball straight through the pipe... you can't do that with a FM.
So, what do YOU think? Which is less restrictive? (Granted, yes, I know that the difference could be so miniscule that it wouldn't really matter much, but still....)
Your opinions are needed!
07-12-04, 04:00 PM
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which is better?
Flow master dual chamber 40 series..... for $35, no shipping...... with a 2" mandrel bent pipe for $15 from exhaust manifold back, no waiting..... or a plain jane fart cannon thats $60shipped waiting that long, plus the pipe.....
Flow master dual chamber 40 series..... for $35, no shipping...... with a 2" mandrel bent pipe for $15 from exhaust manifold back, no waiting..... or a plain jane fart cannon thats $60shipped waiting that long, plus the pipe.....
07-12-04, 04:02 PM
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For one, the FM won't last any length of time. The exhaust gases will burn out the baffles inside. Two, the tin can ricer muffler will sound like ****. I wanna say that the FM will flow more though. The tin can has got fiberglass packing inside the muffler, so the gases aren't going to flow right through like a golf ball passes through it. They will circulate around, and create alot of turbulence inside the muffler. FM designs the baffles so flow isn't substantially reduced. But again, I wouldn't put either of these on a rotary.
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07-12-04, 04:05 PM
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BTW THE FLOW MASTER WONT BURN UP...
MARIO RAN TWO FLOW MASTERS AND A EDELBROCK ON HIS CAR FOR OVER A YEAR ON HIS STREET PORT 12A.....
Trust me..... It wont burn up, already proven....
Plus I had this muffler on my 13b street port....
MARIO RAN TWO FLOW MASTERS AND A EDELBROCK ON HIS CAR FOR OVER A YEAR ON HIS STREET PORT 12A.....
Trust me..... It wont burn up, already proven....
Plus I had this muffler on my 13b street port....
NEVAH!!!! 
Alright 
07-12-04, 04:12 PM
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Oh, and by the way -- I personally know someone that is using a Titanium muffler very similar to this one.... single muffler on an 86 or 87 Bridgeported 13bT2.... pushing somewhere around or over 400RWHP.... his is still running very strong, no problems with it, and it's the only one he's had.... or needed.
07-12-04, 06:03 PM
#13
Originally posted by lovintha7
For one, the FM won't last any length of time. The exhaust gases will burn out the baffles inside. Two, the tin can ricer muffler will sound like ****. I wanna say that the FM will flow more though. The tin can has got fiberglass packing inside the muffler, so the gases aren't going to flow right through like a golf ball passes through it. They will circulate around, and create alot of turbulence inside the muffler. FM designs the baffles so flow isn't substantially reduced. But again, I wouldn't put either of these on a rotary.
For one, the FM won't last any length of time. The exhaust gases will burn out the baffles inside. Two, the tin can ricer muffler will sound like ****. I wanna say that the FM will flow more though. The tin can has got fiberglass packing inside the muffler, so the gases aren't going to flow right through like a golf ball passes through it. They will circulate around, and create alot of turbulence inside the muffler. FM designs the baffles so flow isn't substantially reduced. But again, I wouldn't put either of these on a rotary.
07-12-04, 09:34 PM
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Allaya who think they know what a Flowmaster sounds like on a rotary can bite my butt. You don't know what you're talking about. Have you ever actually run one? I ran a Random Tech 2.5" cat into an Edelbrock SS RPMmuffler which went to a custom Y splitter, single 2.5" inlet to two 2" outlets, which went into two 40 series Flowmaster mufflers. At idle, it was no louder than stock and you could actually talk in normal tones at highway speeds. At 8000 rpm, the sound was glorious. At idle, it sounded just like an old English sportscar with the low burble and everything. Those Flowmasters are still in great shape, which can't be said of the Edelbrock muffler....why?
BECAUSE ANYTHING THAT HAS FIBREGLAS FOR PACKING WILL NOT SURVIVE ROTARY EXHAUST TEMPERATURES, PERIOD.
Even the ceramic pack is blown out...they just don't last. On the other hand, with a lifetime warranty, I just keep replacing it, year after year...
That is a first person account, not a crap "well, my friend had a flow..." SHUT UP! I don't care. I ran the stuff!
BTW, this was the Rotary Performance (think Ari Yallon, who actually built the engine...) big streetport that had the bonestock Nikki that, on the dyno, still made 135 HP at the flywheel with old plugs and no tune-up, so you know there was no restriction on the exhaust side...
BECAUSE ANYTHING THAT HAS FIBREGLAS FOR PACKING WILL NOT SURVIVE ROTARY EXHAUST TEMPERATURES, PERIOD.
Even the ceramic pack is blown out...they just don't last. On the other hand, with a lifetime warranty, I just keep replacing it, year after year...
That is a first person account, not a crap "well, my friend had a flow..." SHUT UP! I don't care. I ran the stuff!
BTW, this was the Rotary Performance (think Ari Yallon, who actually built the engine...) big streetport that had the bonestock Nikki that, on the dyno, still made 135 HP at the flywheel with old plugs and no tune-up, so you know there was no restriction on the exhaust side...
Last edited by mar3; 07-12-04 at 09:40 PM.
07-12-04, 09:46 PM
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Re: Exhaust/Muffler Question -- Restrictive or NOT Restrictive?
Originally posted by jweather73
Which one is LESS restrictive?
Here's my theory... Yes, I know that FM makes a damn good muffler and the theory behind it and how it's supposed to divide the air up and it's supposed to have very low restrictive air flow.... but my thought is this....
Which one is LESS restrictive?
Here's my theory... Yes, I know that FM makes a damn good muffler and the theory behind it and how it's supposed to divide the air up and it's supposed to have very low restrictive air flow.... but my thought is this....
07-12-04, 09:52 PM
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All the old school rotary guys ran Flows. It is raspy as all hell, very unique. Friend of mine custom ordered a single-inlet dual-outlet 40 Series for my car because its what all his people ran back in the day.
mar: your old setup sounds like it was rad. Happen to have any old footage/clips of it lying around somewhere?
mar: your old setup sounds like it was rad. Happen to have any old footage/clips of it lying around somewhere?
07-12-04, 09:56 PM
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After I totaled the car, I pulled the engine and cut the exhaust out. I still have it in my garage sans the Edelbrock muffler which I finally gave up on...I'll take some pics and post 'em if Sterling will ever get back to me.....
..lol, j/k...don't curse me, D....
....lol, j/k...don't curse me, D....
07-12-04, 10:02 PM
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ok ok ok ok ok.....i know you all hate them, but i hjave a really good stainless muffler (the "golfball" type) and a bracket...i woulda installed her 2 years ago but needed to do some highway travel...and well who cares...
what do they sound like? and i dont want "they sound like ****" cuz that dont tell me nothing.....use your verbs and TELL ME WHAT THEY SOUND LIKE
thanks
what do they sound like? and i dont want "they sound like ****" cuz that dont tell me nothing.....use your verbs and TELL ME WHAT THEY SOUND LIKE
thanks
07-12-04, 10:10 PM
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At first they sound buzzy, like bees. Lots of bees that need ritalin. Once the packing dies it sounds like bees, that need ritalin, amplified through the Back to the Future amp, inside the Batcave. It is UBER loud.
07-12-04, 10:29 PM
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So Mario..... Which one yields the most performance, in clear plain words, flow master, or fart cannon?
I think the flowmaster gives the best flow.....
Laters, Andrew....
I think the flowmaster gives the best flow.....
Laters, Andrew....
07-12-04, 10:31 PM
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I could care less if it were to sound like an elephant farting or an dog sneezing.
And in the defense of "lovintha7" he said that the RICER TIN CAN had the fiberglass packing... not the FM.
Either way, I still stand by my theory.... whether I'm right or wrong, I guess remains to be seen. I can see straight through the damn thing! As far as I'm concerned, no twists, no turns, no anything to get in the way of the air going out.... resonance smesonance.... I don't care about sound. Just performance.
And in the defense of "lovintha7" he said that the RICER TIN CAN had the fiberglass packing... not the FM.
Either way, I still stand by my theory.... whether I'm right or wrong, I guess remains to be seen. I can see straight through the damn thing! As far as I'm concerned, no twists, no turns, no anything to get in the way of the air going out.... resonance smesonance.... I don't care about sound. Just performance.
07-12-04, 10:55 PM
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well said...and I do agree with you...(the golf ball thing) I think Im gonna do it....or i may buy 2 "cherry bombs" and weld them side by side...i think it will look cool that way too
