resonance air intake
unintentionally, be it just to make the Rochester happy, I implemented some of the things Porsche did to move air, and stay nice in civilization (calm the engine and noise)
I am finding this photo fascinating..they utilized the bounce (frequency) of the engine against itself to move air and not kill it. I ponder hacking the ends of a Subaru intake, going way up, then back down..it would look a bit like a bug or a spider. The ej series Subaru had some designs that did this..also resonance related.
This move of course, would keep it in a racing mode at all times..still staying calm in the city, but the big end would be a cold still charge (big air)
This photo is from a n/a 400hp Carrera S (2013) and they played with plastic. Using metal does not need the intricate detailing in stopping vibration.
I used to get laughed at looking to Porsche for details, then went on my own. I am glad to have stayed as nerd as I did. I ended up doing similar things. A factual reason for looking into Porsche for an 87 Subaru..
the height , width and wheelbase is within an inch. I can only imagine an 87 Subaru sized car with a 3.2 watercooled flat six..it is no wonder Porsche is famous for going fast. I am stil having fun with a four banger in the same size chassis and five more gears.
the amazing part is seeing they utilize two throttles, one actually as a damper. the carb world has to operate in reverse order. Damper on the top side of venturi. Injection can do any version..but found this photo amazing (never seen what Porsche did there before), it matched what I did to make my boxer work normal with big cfm at slow speeds. More than a coincidence. A boxer is a boxer. To get an n/a version into big flows on one throttle..it needs alot of thought to be a tight standard (no vapors flying etc etc.).
my first year with the Rochester is a fun memory. The sube took off with the wahwahs of a cold gt3 leaving the pits to start a race. I knew I had to think a little more. Today is just right, it even sounds small..never an oem sized small, but small enough to not bother my neighborhood. Now out at speed, 3k rpm and beyond, full air...a silence takes over the cabin..and the exhaust is indeed quite large. Comically a mini super car.
I suppose this is a secret for n/a boxer fans. No secondary damper for slow driving? That boxer is in a permanent small mode, or all large..both easy to identify once a test drive. To have both at once is modern thinking.
unintentionally, be it just to make the Rochester happy, I implemented some of the things Porsche did to move air, and stay nice in civilization (calm the engine and noise)
I am finding this photo fascinating..they utilized the bounce (frequency) of the engine against itself to move air and not kill it. I ponder hacking the ends of a Subaru intake, going way up, then back down..it would look a bit like a bug or a spider. The ej series Subaru had some designs that did this..also resonance related.
This move of course, would keep it in a racing mode at all times..still staying calm in the city, but the big end would be a cold still charge (big air)
This photo is from a n/a 400hp Carrera S (2013) and they played with plastic. Using metal does not need the intricate detailing in stopping vibration.
I used to get laughed at looking to Porsche for details, then went on my own. I am glad to have stayed as nerd as I did. I ended up doing similar things. A factual reason for looking into Porsche for an 87 Subaru..
the height , width and wheelbase is within an inch. I can only imagine an 87 Subaru sized car with a 3.2 watercooled flat six..it is no wonder Porsche is famous for going fast. I am stil having fun with a four banger in the same size chassis and five more gears.
the amazing part is seeing they utilize two throttles, one actually as a damper. the carb world has to operate in reverse order. Damper on the top side of venturi. Injection can do any version..but found this photo amazing (never seen what Porsche did there before), it matched what I did to make my boxer work normal with big cfm at slow speeds. More than a coincidence. A boxer is a boxer. To get an n/a version into big flows on one throttle..it needs alot of thought to be a tight standard (no vapors flying etc etc.).
my first year with the Rochester is a fun memory. The sube took off with the wahwahs of a cold gt3 leaving the pits to start a race. I knew I had to think a little more. Today is just right, it even sounds small..never an oem sized small, but small enough to not bother my neighborhood. Now out at speed, 3k rpm and beyond, full air...a silence takes over the cabin..and the exhaust is indeed quite large. Comically a mini super car.
I suppose this is a secret for n/a boxer fans. No secondary damper for slow driving? That boxer is in a permanent small mode, or all large..both easy to identify once a test drive. To have both at once is modern thinking.
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