Only 28%.
Geesh, I just drilled mine and did about 200%, I guess
that is way to much. I guessed the drill area to be
double the size of the pipe. Did make design so I can
drill out one cap and switch out the inner pipe full
of holes to test different back pressure.??
Neil, can you confirm
28%? ??
Is the big can stuffed full of wool, so the primary
tubes fire right into it? How does it exit out that
bottom pipe?
In RX8, they (car forum) say 2.75" is the best (but
hard to find) exhaust size. But since we are taking
large harsh pulses and bring them down to a small
constant flow, they say you can run smaller size. I
did my downpipe as 2.75" and will do the long exhaust
underneath plane in 2.5"
- Matt Boiteau
On
2020-01-20 8:24:41 PM, Neil Unger 12348ung@gmail.com <flyrotary@lancaironline.net>
wrote:
Second
time with 1 photo each to get past the editor!!
Photo of modified straight through muffler to
attach directly to the RX8
engine.?? The science apparently is to have approx
1/8" holes that amount
to 28% of the area of the through pipe.?? This one
is 3 inch but the
Manufacturer claims that?? 2.5" is better. Dia is
5 " and the space
between is packed with fine S/S "wool". THis is
the first bloke that can
tell me the science in mufflers as he has made
them all his working life.
JUst passing this on as I am totally ignorant as
usual.?? Still trying to
mount my turbo if I live long enough.
More photos to follw for those interested.?? Neil