square exhaust

[Fowler]

found this online and just thought these exhaust look cool
Not sure how well they work though

 

[Doug D.]

Not sure how it would work either, but it looks badazz!

 

[Jack Klarich]

Sampson tried it in Sturgis in 90 did not sell well

 

[Fowler]

Sampson tried it in Sturgis in 90 did not sell well

but I wonder how well it works?

 

[MarkFL]

but I wonder how well it works?

When a fluid flows through a pipe, the amount of frictional loss is largely due to the surface area of the pipe...a circle encloses more area for some fixed perimeter than does a square (or any other shape for that matter), so generally for the best flow, you want pipes with a circular cross-section.

In this application, the difference may be so small as to be considered negligible...but that's the simple physics of it.

 

[Sidecarbill]

I bet they would work pretty good. There was a video on youtube sbc new headers on a dyno. They wanted to see what the horsepower loss was if you dented the header during installation. They started with small dents nothin. Pretty soon they were beatin hell out them. Didn't show a power loss until they were almost pounded closed.

 

[irmagoo]

When a fluid flows through a pipe, the amount of frictional loss is largely due to the surface area of the pipe...a circle encloses more area for some fixed perimeter than does a square (or any other shape for that matter), so generally for the best flow, you want pipes with a circular cross-section.

In this application, the difference may be so small as to be considered negligible...but that's the simple physics of it.

round has the best aspect ratio also square 45's 90's are not good for air flow i would always ure round if i could..

 

[rhino 2]

With the engine tuned at a set RPM they will work great...Like in a dragster...

For varying RPM's....All the pipes would have to of be equal lengths ...

Thats the reason for Spaghetti headers...If you were to straighten out all the pipes they should all end up the same length......

 

[Fowler]

I have been thinking about them lately since my Trike build is moving forward

I would love to do it but would hate to spend the time and money and find out they do not work very well

 

[stacebg]

my bet would be unless you are racing wouldnt make enough difference to notice

 

[LarryA]

google marine headers or manifolds. boats used 4.3's also...maybe something there would strike your eye!

 

[Jack Klarich]

I think the square tubes along with the sharp angles would slow down the exhaust gas and cause TOO much reversion. ( hot exhaust would re enter the cylinder) The intake charges would be drastically effected JMO

 

[1dn5up]

By the pix , it looks like the collector is the same size as the tubes. If so , it should be x2 min. Of the tube size. Doesn’t look like a performance viehical, so it don’t matter . JMO

Show n Go :Shrug:

 

[stacebg]

By the pix , it looks like the collector is the same size as the tubes. If so , it should be x2 min. Of the tube size. Doesn’t look like a performance viehical, so it don’t matter . JMO

Show n Go :Shrug:

exactly my thought most factory exhaust is 8 into 1 with short runner cast iron manifolds and the pipe is 1-3/4 or 2" from the manifold all the way to the tail pipe