I would have used the term, expansion chamber, used mostly on two
cycle motorcycles that won't run without them. Hot gases cooling fast
will create a vacuum that will suck another intake charge into the
cylinder, much like a super charger, but from the other end. Hot Rodders
tune their exhaust headers for a big block pulling a full sized car,
using the rule of thumb size, the inside diameter of tube to be one
eighth of an inch larger than the exhaust valve size, each tube to be
thirty two inches long, collecting into four inch collectors, each six
to fifteen inches long, (tuning) will increase and move the torque and
horse power to between four and seven grand. Higher revving four cycle
engines use shorter pipes, with less need for the expansion chamber.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

bob zee wrote:
>
> how does one attain this 'more torque' from the special 'restrictive'
> muffler?
>
> --
> bob z.
>
> "people with less brain power than you are doing more difficult things
> everyday"©

 

I would have used the term, expansion chamber, used mostly on two
cycle motorcycles that won't run without them. Hot gases cooling fast
will create a vacuum that will suck another intake charge into the
cylinder, much like a super charger, but from the other end. Hot Rodders
tune their exhaust headers for a big block pulling a full sized car,
using the rule of thumb size, the inside diameter of tube to be one
eighth of an inch larger than the exhaust valve size, each tube to be
thirty two inches long, collecting into four inch collectors, each six
to fifteen inches long, (tuning) will increase and move the torque and
horse power to between four and seven grand. Higher revving four cycle
engines use shorter pipes, with less need for the expansion chamber.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

bob zee wrote:
>
> how does one attain this 'more torque' from the special 'restrictive'
> muffler?
>
> --
> bob z.
>
> "people with less brain power than you are doing more difficult things
> everyday"©

 

I would have used the term, expansion chamber, used mostly on two
cycle motorcycles that won't run without them. Hot gases cooling fast
will create a vacuum that will suck another intake charge into the
cylinder, much like a super charger, but from the other end. Hot Rodders
tune their exhaust headers for a big block pulling a full sized car,
using the rule of thumb size, the inside diameter of tube to be one
eighth of an inch larger than the exhaust valve size, each tube to be
thirty two inches long, collecting into four inch collectors, each six
to fifteen inches long, (tuning) will increase and move the torque and
horse power to between four and seven grand. Higher revving four cycle
engines use shorter pipes, with less need for the expansion chamber.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

bob zee wrote:
>
> how does one attain this 'more torque' from the special 'restrictive'
> muffler?
>
> --
> bob z.
>
> "people with less brain power than you are doing more difficult things
> everyday"©

 

Damned good answer, Jerry.
VW knew about it, the bus muffler differed from the beetle muffler in that
it (bus) only had one outlet, instead of 2, with the same sized outlet, and
a different tailpipe to avoid damage. This was a good muffler to put on a
stock beetle in mountain country.
BMW's have always seemed to run better with the stock exhaust system, than
any aftermarket, those engineers know what they are doing.
I have seen lots of CJs running headers, big tubes, and flowmaster mufflers.
The 4 and 6 cyl engines sound even sillier than an 8 with this setup, and
are LESS functional for most off-road use. People just don't seem to
understand that louder doesn't make it better.
When we stopped using megaphones on racing buggies and used small corvair
"turbo-mufflers" to comply with those pesky racing rules, we found that the
cars ran better, the ride was more pleasant, and we could see more
wildlife, before it got scared off.
--
Paul Calman, Hathaway Pines, California

 

Damned good answer, Jerry.
VW knew about it, the bus muffler differed from the beetle muffler in that
it (bus) only had one outlet, instead of 2, with the same sized outlet, and
a different tailpipe to avoid damage. This was a good muffler to put on a
stock beetle in mountain country.
BMW's have always seemed to run better with the stock exhaust system, than
any aftermarket, those engineers know what they are doing.
I have seen lots of CJs running headers, big tubes, and flowmaster mufflers.
The 4 and 6 cyl engines sound even sillier than an 8 with this setup, and
are LESS functional for most off-road use. People just don't seem to
understand that louder doesn't make it better.
When we stopped using megaphones on racing buggies and used small corvair
"turbo-mufflers" to comply with those pesky racing rules, we found that the
cars ran better, the ride was more pleasant, and we could see more
wildlife, before it got scared off.
--
Paul Calman, Hathaway Pines, California

 

Damned good answer, Jerry.
VW knew about it, the bus muffler differed from the beetle muffler in that
it (bus) only had one outlet, instead of 2, with the same sized outlet, and
a different tailpipe to avoid damage. This was a good muffler to put on a
stock beetle in mountain country.
BMW's have always seemed to run better with the stock exhaust system, than
any aftermarket, those engineers know what they are doing.
I have seen lots of CJs running headers, big tubes, and flowmaster mufflers.
The 4 and 6 cyl engines sound even sillier than an 8 with this setup, and
are LESS functional for most off-road use. People just don't seem to
understand that louder doesn't make it better.
When we stopped using megaphones on racing buggies and used small corvair
"turbo-mufflers" to comply with those pesky racing rules, we found that the
cars ran better, the ride was more pleasant, and we could see more
wildlife, before it got scared off.
--
Paul Calman, Hathaway Pines, California

 

LOL I forgot about the megaphone era, I had one on my AJS, made it
sound like a Harley.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Paul Calman wrote:
>
> Damned good answer, Jerry.
> VW knew about it, the bus muffler differed from the beetle muffler in that
> it (bus) only had one outlet, instead of 2, with the same sized outlet, and
> a different tailpipe to avoid damage. This was a good muffler to put on a
> stock beetle in mountain country.
> BMW's have always seemed to run better with the stock exhaust system, than
> any aftermarket, those engineers know what they are doing.
> I have seen lots of CJs running headers, big tubes, and flowmaster mufflers.
> The 4 and 6 cyl engines sound even sillier than an 8 with this setup, and
> are LESS functional for most off-road use. People just don't seem to
> understand that louder doesn't make it better.
> When we stopped using megaphones on racing buggies and used small corvair
> "turbo-mufflers" to comply with those pesky racing rules, we found that the
> cars ran better, the ride was more pleasant, and we could see more
> wildlife, before it got scared off.
> --
> Paul Calman, Hathaway Pines, California

 

LOL I forgot about the megaphone era, I had one on my AJS, made it
sound like a Harley.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Paul Calman wrote:
>
> Damned good answer, Jerry.
> VW knew about it, the bus muffler differed from the beetle muffler in that
> it (bus) only had one outlet, instead of 2, with the same sized outlet, and
> a different tailpipe to avoid damage. This was a good muffler to put on a
> stock beetle in mountain country.
> BMW's have always seemed to run better with the stock exhaust system, than
> any aftermarket, those engineers know what they are doing.
> I have seen lots of CJs running headers, big tubes, and flowmaster mufflers.
> The 4 and 6 cyl engines sound even sillier than an 8 with this setup, and
> are LESS functional for most off-road use. People just don't seem to
> understand that louder doesn't make it better.
> When we stopped using megaphones on racing buggies and used small corvair
> "turbo-mufflers" to comply with those pesky racing rules, we found that the
> cars ran better, the ride was more pleasant, and we could see more
> wildlife, before it got scared off.
> --
> Paul Calman, Hathaway Pines, California

 

LOL I forgot about the megaphone era, I had one on my AJS, made it
sound like a Harley.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Paul Calman wrote:
>
> Damned good answer, Jerry.
> VW knew about it, the bus muffler differed from the beetle muffler in that
> it (bus) only had one outlet, instead of 2, with the same sized outlet, and
> a different tailpipe to avoid damage. This was a good muffler to put on a
> stock beetle in mountain country.
> BMW's have always seemed to run better with the stock exhaust system, than
> any aftermarket, those engineers know what they are doing.
> I have seen lots of CJs running headers, big tubes, and flowmaster mufflers.
> The 4 and 6 cyl engines sound even sillier than an 8 with this setup, and
> are LESS functional for most off-road use. People just don't seem to
> understand that louder doesn't make it better.
> When we stopped using megaphones on racing buggies and used small corvair
> "turbo-mufflers" to comply with those pesky racing rules, we found that the
> cars ran better, the ride was more pleasant, and we could see more
> wildlife, before it got scared off.
> --
> Paul Calman, Hathaway Pines, California