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