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
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