Edition 719 Auto Gruppe

Sorry, you must be logged in to use the shoutbox!
Advanced search  

News:

Volkswagens on the Green May 20th. Meet at the Walmart parking lot on North Academy and Jamboree at 7:30am for the drive up.


Pages: 1 [2]  All   Go Down

Author Topic: Turbo smart guys...... HUH????  (Read 1204 times)

0 Members and 3 Guests are viewing this topic.

  • Guest
Turbo smart guys...... HUH????
« Reply #25 on: April 19, 2005, 11:39:23 AM »

Greg, I'm so glad you're on these boards b/c you take much more time explaining shit than I do! :-) And you're 100% right...

I want to touch on one comment b/c it irked me so much that I couldn't continue reading...

The length of a runner DOES NOT effect flow velocity. A change in cross sectional area will. A runner that goes from big to small will increase velocity. Small to big will decrease it. The LENGTH of a runner affects the tuned RPM at which the resonance occurs (note: also a factor of volume and plenum shape and size). That's why variable intakes change the tract length... to create resonance (constructive interference) over a wide range of RPM's.

The physics here are staggering.
Logged

greggearhead

  • 20v
  • ****
  • Karma: +9/-2
  • Offline Offline
  • Posts: 4491
Turbo smart guys...... HUH????
« Reply #26 on: April 19, 2005, 03:05:52 PM »

Quote from: "punkrider99"

okay well unless you clarify then how the fuck would i know which metro you're talking about?  thats like saying "the land speed ford roadster."  theres like a thousand of those.  and i haven't been since '02 and i've only seen one metro.  excuse me for reading exactly what you wrote.


We were talking about turbos - I was using an example of a turbo car, I apologize for somehow leading you to believe it was a supercharged car.




Quote from: "punkrider99"

okay at first you say that supercharging will not make up for shitty flow specs and then you say a f/i motor doesn't have to have as good flowing ports.  so which is it?  last time i check boost will "mask" poor flowing heads because everything is working under pressure, not vacuum.  


Head flow does make a difference.  That is what I said.  It does not make *AS MUCH* of a perceived difference because it cam be compensated for with boost, to a point.  


Quote from: "punkrider99"

obviously you need equal flow rates.  but why even mention that?  did you see something in that pic that made you thing they would flow differently?  all those tubes look the same diameter to me.  who would make an exhaust with different size primaries?


As I indicated by starting my Statement with "Scott" the item was in regards to a comment he made that I thought I would clarify in my head and see what his input was.

Quote from: "punkrider99"

and yes engines "breathe".  ever stick you hand over a carb while an engine is running?  why do you think people put high flowing intakes and bored out tb's or high flow carbs on motors?


OMG.  I fucking quit.  Think about what I said, about pressure - not about the physical act of breathing.  I am done looking at this fucking thread.  And I got laid the other day.
Logged
CIS Didn't exist when I was born...

73 911T
79 Audi Fox
86 Vanagon Syncro

The Asshole

  • Have I told you to go fuck yourself today?
  • 20v
  • ****
  • Karma: +7/-3
  • Offline Offline
  • Posts: 3728
Turbo smart guys...... HUH????
« Reply #27 on: April 19, 2005, 04:54:41 PM »

i love reading these techinogeek arguments....

my $.02
treat a FI car the same as a NA car, if it makes something more efficient, then do it.

inefficiency kills power.

THE WHOLE POINT OF TUNING AN ENGINE IS TO MAKE IT MORE EFFICIENT.
 
point bieng whether it is on a turbo'd car or not, anything done to improve efficiency is always the best route to go. PERIOD.

 you will never win a race by "turning up the boost" to negate the inefficiencies in your system.
Logged
Quote from: Jesus
For what it's worth..and this fucking hurts real bad to say this... I'm gonna have to agree with Jimmy.

JettaGLXdriver

  • Guest
Turbo smart guys...... HUH????
« Reply #28 on: April 19, 2005, 05:24:42 PM »

Unless its agains a N/A VR6.  HEHEHE
Logged

Jeff

  • Guest
Turbo smart guys...... HUH????
« Reply #29 on: April 19, 2005, 10:35:51 PM »

damn it, my computer breaks and i miss the only one worth while post here. scott and greg are dead on here in their posts, nice job guys. Where are you carlos, you still have my maximum boost book??

the main advantages of this particular manifold is its obviously alot better then the stock cast manifold. It allows him to put what ever flange he wants on it  so he can ditch the kkk stuff. with the bigger turbo there is no way it would fit in the stock location so he can move it where it will fit
Logged

LOS

  • Jewish Balla
  • Administrator
  • 24v
  • *
  • Karma: +10/-9
  • Offline Offline
  • Posts: 12953
  • Habitual Line Stepper
Turbo smart guys...... HUH????
« Reply #30 on: April 20, 2005, 07:27:07 AM »

Oh shit i forgot i still have it man... next time i see you remind me and I'll get it over to you
Logged
"Hated it"

punkrider99

  • Guest
Turbo smart guys...... HUH????
« Reply #31 on: April 20, 2005, 08:14:09 AM »

well from the way things looks, it sounds like we pretty much agree on what we're saying (except for the "breathing" thing).  

scott- i kinda fudged the length/diameter discussion a little bit too much.  isn't the normal practice to run longer runners for lower rpm and low range torque applications?  and then just the opposite for high rpm/high torque range.

in the end i think that hand made manifold is going to perform better than anything the oe's have to offer.
Logged
Pages: 1 [2]  All   Go Up