why is DLE slanting/angling the forward side of their mufflers these days?


http://media.chiefaircraft.com/media...-inset1-lg.jpg


http://i440.photobucket.com/albums/q...ps477c9340.jpg

To fit in tighter cowlings. That is what is normally referred to as a compact muffler.

you can run less oil with tapered exhausts

Originally Posted by clivem

you can run less oil with tapered exhausts

Why?

Originally Posted by clivem

you can run less oil with tapered exhausts

now thats just mean

Originally Posted by clivem

you can run less oil with tapered exhausts

ah yes - the tapered exhaust with less oil syndrome. I think it may have something to do with the way the waves bounce around inside the muffler, that creates a better spread of oil in the muffler which in turn means less oil is needed to keep the muffler lubricated - coupled to the fact that the muffler is also now a lower volume.

That same wave length change caused by the waves bouncing off the angled front (or back - depending on which direction you mount the Exhaust) causes a much smother note as some of the waves are still exiting when the exhaust port is closed.

Another reason for the angle is they use a little less material to make each exhaust, this makes them cheaper and lighter.


And of course - the reply from J-Tec (who do know a heck of a lot about exhausts seeing as it is a major part of their business) is actually very correct

I get a G sharp at 6800rpm

Originally Posted by vmceachern

I get a G sharp at 6800rpm

Now that's funny because I normally fart a G flat...

Originally Posted by aussiesteve

ah yes - the tapered exhaust with less oil syndrome. I think it may have something to do with the way the waves bounce around inside the muffler, that creates a better spread of oil in the muffler which in turn means less oil is needed to keep the muffler lubricated - coupled to the fact that the muffler is also now a lower volume.

That same wave length change caused by the waves bouncing off the angled front (or back - depending on which direction you mount the Exhaust) causes a much smother note as some of the waves are still exiting when the exhaust port is closed.

Another reason for the angle is they use a little less material to make each exhaust, this makes them cheaper and lighter.


And of course - the reply from J-Tec (who do know a heck of a lot about exhausts seeing as it is a major part of their business) is actually very correct

Don't forget it puts less stress on the Muffler Bearings so they wont need to be replaced as often.

Originally Posted by cbarnes0061

Don't forget it puts less stress on the Muffler Bearings so they wont need to be replaced as often.

That's ridiculous. Muffler bearings are sealed and don't depend on the engine oil. Geez.

LMAO your right they are sealed aren't they.

Originally Posted by luckymacy

Why?

sorry luckymacy, just having a bit of fun, JTEC's post is 100% correct

now back to the oil question......................