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All Motor S2k With Itb's

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Old Nov 5, 2003 | 08:21 PM
  #71  
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nice setup.. can't wait to see some finalized numbers and if a GB does come into play.. count me in
Old Nov 5, 2003 | 08:58 PM
  #72  
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Originally posted by alexf20c
also, you have direct port injection, for greater efficiency.
but what it all boils down to is getting more air into the engine. if an engine has 100% volumetric efficiency, it means that the air it sucks in is 100% that of the volume of that cylinder. (an engine is nothing more than a giant air pump.) with an ITB setup, the venturi stacks (horns) create a swirl effect that pressurizes the air before it gets into the engine. by pressurizing the air, you get more air into a specific volume; basically, you're condensing the air. this way, it's possible to have as high as 135, or even 150% volumetric efficieny.

with an all-motor engine, you want as much air as possible.
Uhmmm, ......no.

You are pretty much dead wrong. I am a hydraulic engineer, and what you have just stated about the Venturi effect is just completely wrong and actually goes against Bernouli's Principle.

A fluid flowing from a higher cross section area to a lower cross section area actually creates a lower pressure at the smaller cross section area. Not a higher pressure. This is a pretty simple Law to understand. The only thing that will create more power from ITB's is better efficiency. By the pistons not having to work so hard to pull air into the cylinders, more power is easily attained. Hence, the crankshaft doesn't not have as much drag exerted on it.




if an engine has 100% volumetric efficiency, it means that the air it sucks in is 100% that of the volume of that cylinder.
Now, this statement tells me that you haven't even taken college Physics II. Anyone who has taken Physics II knows about the Carnot Engine. It is the only engine that is 100% efficient. And if you know anything about Physics II, you will also know that there is no such thing as the Carnot Engine, because it is impossible to accomplish, just like it is impossible to reach 0 degrees Kelvin for a Chemist.

I understand that you might not know about the specifics of what you have just stated. But come on, with as many people that are on this forum that have bought a $32,000 car, did you not think that at least one of them was an engineer that actually took hard courses in college? I'm not talking about that "basket weaving" algebra based physics that pre-med guys and gals take. I'm talking about real classes here. Cal. based phys. and advanced math courses.

the venturi stacks (horns) create a swirl effect that pressurizes the air before it gets into the engine.
Jesus christ! Again, wrong. Straight air horns only create a low resistance path. They actually negate any swirl effect at all. Swirl is created by plenum butterflys in intake manifolds. Which the S2000 doesn't have any of. The swirl effect is actually not a horsepower maker, it is a torque multiplier. It creates a more complete air/fuel charge burn. It basically "stirs the pot" inside the cylinder. If Honda wanted to fully utilize the Vtec technology, they would used selective cam lift in the S2000. If only one valve opens during the intake stroke(as in Audi's 3 cam intake setup), this will cause an unbalanced intake stream of air and fuel coming into the cylinder. This will create a "swirl" effect. Then as the rpm increases and torque is less important, both cams would open utilizing a more clean and straight intake flow and exhaust flow, thus creating more usable horsepower in the higher rpm ranges.

To put it simply, nothing can pressurize air by suction, (an intake stroke). The only thing that can pressurize a fluid is for it to be forced from a higher cross section area to a smaller cross section area. For a fluid to be forced, it has to have something behind it exerting a force upon it (ie: an air pump, turbo or supercharger)End of story. Please don't argue with me about this, because there is ZERO arguement.

I'm not trying to flame here. But as an engineer, I would hate to know that so many people that are reading this thread are learning such wrong information about flow dynamics and simple physics.(and I'd like to emphasize the word "SIMPLE")
Old Nov 5, 2003 | 09:15 PM
  #73  
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I didn't even read all of Alex F20C's posts before posting my reply.

After reading the rest of his posts, I can say to all of you that he knows absolutely NOTHING about what he has just stated.

Pretty much everything he typed is completely wrong.
Old Nov 5, 2003 | 10:06 PM
  #74  
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PMed AJ and soon Ben from AJ will come out and tell the public that there are no such things as Spoon cams.
Old Nov 5, 2003 | 10:16 PM
  #75  
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Originally posted by Xplosiv
PMed AJ and soon Ben from AJ will come out and tell the public that there are no such things as Spoon cams.
I can honestly say that I don't know crap about any spoon cams. So I can't have a comment on them. I don't know, and could care less if they exist or not. I'm not that interested in cams. Cams really only have good result in conjunction with other agressive mods in the head which cost in total approaching at or over $1000. To me that's just not worth it. You might as well just buy a S/C and have a quick "bolt on" 80 to 100hp. Simply a quick weekend job.

But I was also confused about your previous post.
Old Nov 5, 2003 | 10:35 PM
  #76  
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Is this thread about Spoon cams or ITB ???

DOHC
Old Nov 5, 2003 | 11:12 PM
  #77  
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(TOPfuel)........................ Why don't you care about showing us your progress report's ? Does that make you a looser for making 5-12whp with a bolt-on item... NOPE.... Just do all of us a favor and show us... DUDE........ GET THE GRAPH FROM YOUR NEIGHBOR if it his car... Shit............

I HAVE ONE even.... Did I do mods... NO.... Just shut these guys up with your "KNOWLEDGE." DIP SHIT!
Old Nov 5, 2003 | 11:27 PM
  #78  
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[QUOTE]Originally posted by spoolenturbo
(TOPfuel)........................
Old Nov 5, 2003 | 11:37 PM
  #79  
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I showed Mr Kekoa my motor and i gave him a ride in it also
He will let guy's know how the car felt and looked.
He also toke some pic's so no one think's i'm bullshitting

Today 11/5/03
Thanks Kekoa , POWER S2000
Old Nov 5, 2003 | 11:45 PM
  #80  
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Originally posted by dohc
Is this thread about Spoon cams or ITB ???

DOHC



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