| Lynn,
Interesting point. I had never really considered that aspect of exhaust design.
What ID tube works best for a p-port?
Mark
On Sat, Nov 20, 2010 at 6:37 AM, <Lehanover@aol.com> wrote:
In a message dated 11/20/2010 6:33:32 A.M. Eastern Standard Time,
msteitle@gmail.com writes:
The positive news is that I picked up 10-12 mph on top speed! So,
it confirms my suspicions that the tangential muffler is too restrictive for
my engine. While definitely not optimal, the 3-into-1 design is clearly
better than the tangential muffler when it comes to making power.
So, my plan is to build another exhaust from 625 inconel, making all
three runners 31.5". I haven't decided what I will use for a muffler.
I'll report back when I have more data.
Mark
Equally spaced pulses from identical length tubes joined at the same
angles, while still loud will sound less irritating, and might be easier to
muffle. Uneven lengths and angles sound like fingernails on a black board.
Lynn E. Hanover |