:Single vs Dual?
:-What is your opinion/belief on optimal runner length and how will single vs dual come into play here?
runner length is largly a variable in naturally aspirated engines. it's less of a variable in forced induction.:"This really boils down to complexity of install and function. Do I want two throttle bodies? Do I want one throttle body?"
:-will there be any responsiveness tradeoffs going from dual TB's to a single? no clue. I think that throttle body size and routing would be a significant variable here. :"How will i get air to a single TB from say an single core FMIC/dual core FMIC, etc. I want this to have as little impact on the rest of the system as possible. That would allow the end user to experiment with SMICs, Single core/Dual core FMICs, etc."
:-would be nice to retain SMIC's for several reasons, including cost. I'd really hate to have to go to the expense of ditching my SMIC's and have to worry about the heat/intake plumbing issues etc. :"I also firmly believe a properly designed plenum (unlike or stock twin plenums), will prevent running rediculously rich in #1 and #2, while being on the edge of lean on #5 and #6 as we have now."
:-very interesting/scary information but good to know. Get working on the new plenum already! here's the "important" part. I'm a fatalist. I look at everything as if it can be improved upon. If your plenum is seeing 45 pounds of boost pressure, EVERY square inch of that plenum, in every single runner, will see 45 pounds of pressure.
My biggest concern is when air velocity starts to rise. This is were my analysis showed a deficiency in our stock plenums. For guys running insane boost, you can easily conclude that air velocities will increase as the system works.
It's the difference in velocity, runner to runner, that I'd like to find a way to even out, no matter what the air pressure or velocity requirements are.
So, in summary, I'm a fatalist. So no one should IM me, Email me, or post how things work. I'm working on learning how to do a dynamic CFD model that allows me to open and close "valves" over a period of time. I've got the time dependant analysis down pat. It's changing the state of the model thats becoming an issue. My biggest concern is not wanting to become a "trial and error" engineer. I want to make sure that this thing will work first, before I spend my $$ to do it. I don;t mind the time required... it's good for my career. thanks!
Petz #3
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