Exhaust/Muffler Question -- Restrictive or NOT Restrictive?
07-13-04, 11:01 AM
#30
Originally posted by mar3
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...
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...
07-13-04, 02:05 PM
#31
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here's what i'm running...
racing beat header to custom 2.5 inch pipe, to magnaflow round 24" 2.5 inch straighthrough (magnaflows are packed with stainless! no burnout)
up and OVER the rear end, to a generic yoshimura canister muffler. yeah yeah, i know yoshi's are for streetbikes, but believe me, they have some of the best tone ever. this is my second car with one on, before i had a prelude that sounded just as beautiful as my mazda. it's a little loud, but at idle it's really quiet, and has absolutely no hint of rotary tone whatsoever. really nice deep mellow tone, until you floor it and the secondaries kick in, then it screams bloody murder.
run that combo for about 3 months now and it hasn't gotten much louder, so i think all the burnout from the yoshi would have happened by now.
racing beat header to custom 2.5 inch pipe, to magnaflow round 24" 2.5 inch straighthrough (magnaflows are packed with stainless! no burnout)
up and OVER the rear end, to a generic yoshimura canister muffler. yeah yeah, i know yoshi's are for streetbikes, but believe me, they have some of the best tone ever. this is my second car with one on, before i had a prelude that sounded just as beautiful as my mazda. it's a little loud, but at idle it's really quiet, and has absolutely no hint of rotary tone whatsoever. really nice deep mellow tone, until you floor it and the secondaries kick in, then it screams bloody murder.
run that combo for about 3 months now and it hasn't gotten much louder, so i think all the burnout from the yoshi would have happened by now.
07-13-04, 09:38 PM
#32
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Originally posted by Anex 570
So yea.. I'm not sure who exactly you were trying to yell at, and flowmasters arent packed with anything in them, they're just steal chambers.
So yea.. I'm not sure who exactly you were trying to yell at, and flowmasters arent packed with anything in them, they're just steal chambers.
Even the Edelbrock, with its ceramic packing good to 1900 degrees Fahrenheit had its stuffing blown out in a years' time...and maybe your resonators were the problem for I had no humming and will have no humming when the set-up goes on Furious....
07-14-04, 11:29 AM
#34
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So, it seems then, that no one has any kind of proof one way or another on whether or not one muffler is more or less restrictive than the other. It's all a matter of opinion.
Entertaining thread though, to say the least!
Entertaining thread though, to say the least!
07-14-04, 10:09 PM
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Originally posted by jweather73
So, it seems then, that no one has any kind of proof one way or another on whether or not one muffler is more or less restrictive than the other. It's all a matter of opinion.
So, it seems then, that no one has any kind of proof one way or another on whether or not one muffler is more or less restrictive than the other. It's all a matter of opinion.
07-15-04, 09:55 AM
#38
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Great, Mario....this is just what I wanted to hear....
that means Andrew will never let me hear the end of it.
-Jeff
PS -- you wouldn't happen to have or know where to find those results, would you?
that means Andrew will never let me hear the end of it. -Jeff
PS -- you wouldn't happen to have or know where to find those results, would you?
07-15-04, 08:32 PM
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lol....omigod, you're asking me to dig through a monster stack of magazines to find it....I don't think their website is that organized...I'll tear into it Sunday...it was within the last three years, I'm pretty sure...I never recycle my Car Craft or any of the Pontiac mags I subscribe to, so it's gotta be in there somewhere...I'll also get the one which proved electric fans are consistently able to free up 10% more HP over any mechanical fan while I'm at it...
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