In a message dated 2/20/2007 7:46:37 P.M. Eastern Standard Time,
downing.j@sbcglobal.net writes:
I welcome any and all comments and criticism, as I stated, I
don't have a clue how this will work.
JohnD
I think this will be rejected out of hand. Just enough flow to get off idle
but no more.
I made my first muffler out of a tube used for supporting a house. Those
things with a screw
system on top to adjust it. Maybe 1/8" wall mild steel. I drilled hundreds
of 3/16" holes in it and put that in the center of my muffler as the 3" core. I
enclosed that in a 4" tube.
The whole mess was 30" long and lasted one season. The end of the core
closer to the engine was hammered to pieces. It got louder each weekend until we
got close to the 105 Db limit . In stainless it would have worked. Although
very heavy. It would have worked better with stainless swarf packed around the
center tube. The engine builder requires 4" center tube for best power. So now
we have a 4" Borla stainless.
For the lower RPM the smaller core diameter would be OK. But the least
amount of restriction possible is far better.
The Spintech worked. It just had a bad shape. How about a round
Spintech?
Lynn E. Hanover