Cherry Bomb Exhaust? Is it a Joke?
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Originally Posted By: mpvue
sorry, too general. some cars may actually return less mpg and/or power depending on a host of factors; some cars do better w/ some backpressure.
It's possible, but I've never heard of such cars. Which cars are you referring to, and how do minor losses in the exhaust flow help those engines?
sorry, too general. some cars may actually return less mpg and/or power depending on a host of factors; some cars do better w/ some backpressure.
It's possible, but I've never heard of such cars. Which cars are you referring to, and how do minor losses in the exhaust flow help those engines?
Hey now,mpvue,we were just as 'legit' back then, as import tuner cars and rice exhaust are now.
When I was young my mom drove a Subaru Brat. I took it to the local muffler shop and had duels put on it with 12 inch glasspacks.
Thing sounded like a swarm of bees and mom was not happy with me.
Now the Cops can ticket you for having straight through mufflers if your in the forest.
Thing sounded like a swarm of bees and mom was not happy with me.
Now the Cops can ticket you for having straight through mufflers if your in the forest.
Originally Posted By: eljefino
Cherry bombs make good universal replacements for resonators, that goofy bulge between catco and real muffler.
My state inspection requirements ban see-through mufflers, have to have a baffle somewhere in there.
Interesting. My Gibson muffler is straight-through with only 0.5cm ridges entering the main 3" passageway. Never had a problem with it in MA.
Cherry bombs make good universal replacements for resonators, that goofy bulge between catco and real muffler.
My state inspection requirements ban see-through mufflers, have to have a baffle somewhere in there.
Interesting. My Gibson muffler is straight-through with only 0.5cm ridges entering the main 3" passageway. Never had a problem with it in MA.
Originally Posted By: eljefino
My state inspection requirements ban see-through mufflers, have to have a baffle somewhere in there.
I'd support that policy here if it applies to motorcycles as well!
You'd probably be able to get away with something like the Dynomax Ultra Flo I referred to earlier anyway.
My state inspection requirements ban see-through mufflers, have to have a baffle somewhere in there.
I'd support that policy here if it applies to motorcycles as well!
You'd probably be able to get away with something like the Dynomax Ultra Flo I referred to earlier anyway.
The sound you get from this type of muffler depends somewhat on how close they are to the end of the exhaust; put them behind the rear axle and you get a very mellow, laid-back burble, or ahead of the rear axle and you get that sharper, annoying poppy sound that a lot of people hate.
I had true dual 2.5" pipe with cheap no-name muffler shop glasspacks on my first Town Car with factory cats and it was only noticed as loud because it was a Town Car, and that was even with them ahead of the rear axle. It wasn't poppy or cackley at all, just mellow, mostly due to still having functional cats.
The current Town Car is getting Flowmaster 40s one of these days, because I can.
I had true dual 2.5" pipe with cheap no-name muffler shop glasspacks on my first Town Car with factory cats and it was only noticed as loud because it was a Town Car, and that was even with them ahead of the rear axle. It wasn't poppy or cackley at all, just mellow, mostly due to still having functional cats.
The current Town Car is getting Flowmaster 40s one of these days, because I can.
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Originally Posted By: Ike_Clanton
The sound you get from this type of muffler depends somewhat on how close they are to the end of the exhaust; put them behind the rear axle and you get a very mellow, laid-back burble, or ahead of the rear axle and you get that sharper, annoying poppy sound that a lot of people hate.
I had true dual 2.5" pipe with cheap no-name muffler shop glasspacks on my first Town Car with factory cats and it was only noticed as loud because it was a Town Car, and that was even with them ahead of the rear axle. It wasn't poppy or cackley at all, just mellow, mostly due to still having functional cats.
The current Town Car is getting Flowmaster 40s one of these days, because I can.
They sound awesome, I have them on mine. I have an audio clip of it somewhere.....
The sound you get from this type of muffler depends somewhat on how close they are to the end of the exhaust; put them behind the rear axle and you get a very mellow, laid-back burble, or ahead of the rear axle and you get that sharper, annoying poppy sound that a lot of people hate.
I had true dual 2.5" pipe with cheap no-name muffler shop glasspacks on my first Town Car with factory cats and it was only noticed as loud because it was a Town Car, and that was even with them ahead of the rear axle. It wasn't poppy or cackley at all, just mellow, mostly due to still having functional cats.
The current Town Car is getting Flowmaster 40s one of these days, because I can.
They sound awesome, I have them on mine. I have an audio clip of it somewhere.....
No engine likes exhaust backpressure - ever.
At first glance a skinnier pipe MUST have more backpressure, right?
Well, no.
A larger pipe has a lot more gas, and therefore more mass to push through. Plus, it cools the gas more, and makes things even worse.
All this takes more power, and retains exhaust gas n the combustion chamber [after firing], to some degree.
The apparent restriction of the skinny pipe is actually easier to push through. And velocity is increased, so low and mid power is best.
At first glance a skinnier pipe MUST have more backpressure, right?
Well, no.
A larger pipe has a lot more gas, and therefore more mass to push through. Plus, it cools the gas more, and makes things even worse.
All this takes more power, and retains exhaust gas n the combustion chamber [after firing], to some degree.
The apparent restriction of the skinny pipe is actually easier to push through. And velocity is increased, so low and mid power is best.
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I threw one of these under some 70-something beater AMC Hornet wagon (or was it a hatchback?). I did it because it was the cheapest thing I could find and I was broke. Sounded okay under normal conditions. It got interesting, if one can say that about a AMC 6, when you got on it on on-ramps if one floored it. No G force increase was noted.
Ford appears to have something similar under my son's newly acquired BIG FOOT F150 (the trim package that never was). It looks like it has two cats and a resonator that suspiciously looks like a stainless or aluminized Cherrybomb.
Ford appears to have something similar under my son's newly acquired BIG FOOT F150 (the trim package that never was). It looks like it has two cats and a resonator that suspiciously looks like a stainless or aluminized Cherrybomb.
Had them on a 350 Malibu with heads, cam, intake, carb. sounded insane.
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Originally Posted By: Ike_Clanton
The sound you get from this type of muffler depends somewhat on how close they are to the end of the exhaust; put them behind the rear axle and you get a very mellow, laid-back burble, or ahead of the rear axle and you get that sharper, annoying poppy sound that a lot of people hate.
I had true dual 2.5" pipe with cheap no-name muffler shop glasspacks on my first Town Car with factory cats and it was only noticed as loud because it was a Town Car, and that was even with them ahead of the rear axle. It wasn't poppy or cackley at all, just mellow, mostly due to still having functional cats.
The current Town Car is getting Flowmaster 40s one of these days, because I can.
Ike:
Here's a vid (sorry the volume is low) of the Lincoln idling with 40's on it.
http://www.youtube.com/watch?v=JTFgZNuPx-M
The sound you get from this type of muffler depends somewhat on how close they are to the end of the exhaust; put them behind the rear axle and you get a very mellow, laid-back burble, or ahead of the rear axle and you get that sharper, annoying poppy sound that a lot of people hate.
I had true dual 2.5" pipe with cheap no-name muffler shop glasspacks on my first Town Car with factory cats and it was only noticed as loud because it was a Town Car, and that was even with them ahead of the rear axle. It wasn't poppy or cackley at all, just mellow, mostly due to still having functional cats.
The current Town Car is getting Flowmaster 40s one of these days, because I can.
Ike:
Here's a vid (sorry the volume is low) of the Lincoln idling with 40's on it.
http://www.youtube.com/watch?v=JTFgZNuPx-M
Originally Posted By: mpvue
Originally Posted By: Samilcar
It's probably just my memory playing tricks on me, but as a kid growing up in the 1970's it seemed like every tenth car had a Cherry Bomb muffler sticker on one of the back side windows.
or that woody woodpecker 'thrush' sticker, and that stupid rabbit 'hijacker' air shocks sticker. I still see idiots w/ that stuff, listening to led zeppelin and thinking life doesn't get any better than this.
Hey, my generation had our Thrush mufflers, "straights-n-'packs", sidepipes, wide oval tires, "keep on truckin'" stickers, and hijackers. Today kids have coffee-can exhaust pipes on 92-horsepower Hondas, wings bigger than a Superbird on cars smaller than a Pinto, 20" bling-bling wheels with 3/4" tall sidewalls that go flat if you run over a peanut, and stereo systems that require more power than the engine can put out so a trunk full of deep-cycle batteries is necessary.
Which is dumber? Depends on who you ask
Originally Posted By: Samilcar
It's probably just my memory playing tricks on me, but as a kid growing up in the 1970's it seemed like every tenth car had a Cherry Bomb muffler sticker on one of the back side windows.
or that woody woodpecker 'thrush' sticker, and that stupid rabbit 'hijacker' air shocks sticker. I still see idiots w/ that stuff, listening to led zeppelin and thinking life doesn't get any better than this.
Hey, my generation had our Thrush mufflers, "straights-n-'packs", sidepipes, wide oval tires, "keep on truckin'" stickers, and hijackers. Today kids have coffee-can exhaust pipes on 92-horsepower Hondas, wings bigger than a Superbird on cars smaller than a Pinto, 20" bling-bling wheels with 3/4" tall sidewalls that go flat if you run over a peanut, and stereo systems that require more power than the engine can put out so a trunk full of deep-cycle batteries is necessary.
Which is dumber? Depends on who you ask
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Originally Posted By: 440Magnum
Originally Posted By: mpvue
Originally Posted By: Samilcar
It's probably just my memory playing tricks on me, but as a kid growing up in the 1970's it seemed like every tenth car had a Cherry Bomb muffler sticker on one of the back side windows.
or that woody woodpecker 'thrush' sticker, and that stupid rabbit 'hijacker' air shocks sticker. I still see idiots w/ that stuff, listening to led zeppelin and thinking life doesn't get any better than this.
Hey, my generation had our Thrush mufflers, "straights-n-'packs", sidepipes, wide oval tires, "keep on truckin'" stickers, and hijackers. Today kids have coffee-can exhaust pipes on 92-horsepower Hondas, wings bigger than a Superbird on cars smaller than a Pinto, 20" bling-bling wheels with 3/4" tall sidewalls that go flat if you run over a peanut, and stereo systems that require more power than the engine can put out so a trunk full of deep-cycle batteries is necessary.
Which is dumber? Depends on who you ask
Well played sir! I'll take a fox tail on my mirror over a [censored] cannon any day
Remember Supertrap?
Originally Posted By: mpvue
Originally Posted By: Samilcar
It's probably just my memory playing tricks on me, but as a kid growing up in the 1970's it seemed like every tenth car had a Cherry Bomb muffler sticker on one of the back side windows.
or that woody woodpecker 'thrush' sticker, and that stupid rabbit 'hijacker' air shocks sticker. I still see idiots w/ that stuff, listening to led zeppelin and thinking life doesn't get any better than this.
Hey, my generation had our Thrush mufflers, "straights-n-'packs", sidepipes, wide oval tires, "keep on truckin'" stickers, and hijackers. Today kids have coffee-can exhaust pipes on 92-horsepower Hondas, wings bigger than a Superbird on cars smaller than a Pinto, 20" bling-bling wheels with 3/4" tall sidewalls that go flat if you run over a peanut, and stereo systems that require more power than the engine can put out so a trunk full of deep-cycle batteries is necessary.
Which is dumber? Depends on who you ask
Well played sir! I'll take a fox tail on my mirror over a [censored] cannon any day
Remember Supertrap?
I blew up the stock muffler while trying to start my '70 Grand Prix on a cold morning, so I had the local farmer's co-op install duals with long glasspacks. Going from single to dual exhaust made that 400 feel like they had taken a block of wood out from under the throttle, but my ears were ringing after an hour on the highway. I had them install a crossover tube, and the sound mellowed right out. It still wasn't crackly or excessively loud when I added headers. That engine and exhaust system eventually found its way into a car with 4.10 gears, and the sound at highway speed was still decent.
I have heard people talk about installing glasspacks backwards, on the theory that they'll flow better if the louvers aren't catching exhaust.
I have heard people talk about installing glasspacks backwards, on the theory that they'll flow better if the louvers aren't catching exhaust.
I had a nova w/ a warmed over 283. ran it for a little while w/ open headers while waiting for my full exhaust. it was a pig off the line, couldn't break the wheels loose, and it was freaking LOUD. tried some supertrapps mounted right to the collectors, not much difference.
ordered a full 2.5" flowmaster system w/ a crossover tube, and one big muffler mounted behind the axle (both pipes went in, 2 tails out).
the car got QUIETER, WAY QUIETER, and MUCH more powerful. off the line power was very smooth and linear, and would break the wheels loose at will.
open, no restiction exhaust is only a benefit at WOT, maybe. but engineers tune the exhaust in relation to the intake; lots of guys would put headers on something like a 307 2bbl chevelle and then wonder why it was such a dog. well, they weren't taking in enough on the intake. all they got was loud.
ordered a full 2.5" flowmaster system w/ a crossover tube, and one big muffler mounted behind the axle (both pipes went in, 2 tails out).
the car got QUIETER, WAY QUIETER, and MUCH more powerful. off the line power was very smooth and linear, and would break the wheels loose at will.
open, no restiction exhaust is only a benefit at WOT, maybe. but engineers tune the exhaust in relation to the intake; lots of guys would put headers on something like a 307 2bbl chevelle and then wonder why it was such a dog. well, they weren't taking in enough on the intake. all they got was loud.
Originally Posted By: mpvue
open, no restiction exhaust is only a benefit at WOT, maybe. but engineers tune the exhaust in relation to the intake; lots of guys would put headers on something like a 307 2bbl chevelle and then wonder why it was such a dog. well, they weren't taking in enough on the intake. all they got was loud.
Tuning exhaust length and diameter certainly will affect engine power characteristics, and there are disadvantages to going bigger. But, as far as I know, smoother flow through the exhaust is always better.
open, no restiction exhaust is only a benefit at WOT, maybe. but engineers tune the exhaust in relation to the intake; lots of guys would put headers on something like a 307 2bbl chevelle and then wonder why it was such a dog. well, they weren't taking in enough on the intake. all they got was loud.
Tuning exhaust length and diameter certainly will affect engine power characteristics, and there are disadvantages to going bigger. But, as far as I know, smoother flow through the exhaust is always better.
I was reminded of the aggressive flow robbing louvers in the cheap cherry bomb type mufflers.
Rough sawn hangy stuff in the breeze is horrible for flow.
An expensive Magnaflow is stainless steel, and has smooth flat louvers.
Rough sawn hangy stuff in the breeze is horrible for flow.
An expensive Magnaflow is stainless steel, and has smooth flat louvers.
Here's a couple videos of my old 93 Crown Vic with a single cherry bomb in place of the stock muffler which had rotten off.
First start after cherry bomb install
First little test drive after cherry bomb install
Revving inside a covered bridge
First start after cherry bomb install
First little test drive after cherry bomb install
Revving inside a covered bridge
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