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Old 03-29-2010, 12:38 AM   #1
iminhell
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Edumicationial post ubout injins

In an effort to create a better educated, more informed user base I think it's a good idea if we all get on the same page.

To participate you must post a link to some relevant information, if you don't I'll ask your post be removed. This is intended to be an information thread more so than a Q & A thread.


First I suppose it's best we get the basics of what an Internal Combustion Engine (ICE for short) is and it's purpose out of the way. I'll post more in-depth links as I go along.



Though simplistic, that is one of the better articles on the basics and well worth your time to read it, weather you are an 'expert' or not.

http://auto.howstuffworks.com/engine.htm


So you should have a very basic idea of how things work. You should know that there is no 'explosion' in an engine, it's a predictable pressure rise ensuing from the arc created by the spark plug. 'Explosions' are what detonation can be considered and in worst case scenarios will destroy an engine very quickly.
Before we get into too much math and physics lets get the mechanicals out of the way.



Construction Materials

Engine blocks are either made from variations of Cast Iron or variations of Aluminum and Aluminum alloy. Both have good point and bad. Cast Iron is stronger and has higher ware resistance but Aluminum is lighter and dissipates heat faster. Though Aluminum alloys have come a long way and there is more technology in the way of bracing the Aluminum block vs the big chunk of Iron in the old days.
Crankshafts are made from Nodular Cast Iron or Steel, but as you may find out reading on your own, these are just generalized names. The actual content of the metal can and does vary.
Connecting rods are made of Steel alloys or variants of Aluminum alloys. There are 3 basic methods of making them; cast, forged or machined.
Pistons are Aluminum alloys. Again there are various methods of production; cast, forged or machined.
I'll get into specifics later on.

*this is a section I could use some help on*

Best I can do for now is direct you to a few books with non specif information (seems you'll have to buy or see if the library has, I can't find them free online)

The Science and Technology of Materials in Automotive Engines
Fundamentals of Metallurgy



Engine Balancing

In a perfect world with a perfect running engine you'd not even know it was there. It would run very smooth and there would be no vibration passed on to the passengers. The only way you'd know it was there is when your right foot gets heavy and you stomp the accelerator. The torque of the engine would rock the motor and you'd feel a slight jarring. But we are not in a perfect world and every factory assembled engine is a series of compromises.

Engine Balance Part I
Engine Balance Part II
Engine Balance Part III
Engine Balance Part IV
Engine Balance Part V
Engine balance Part VI



OK. Now on to some basics on how to make more power, just keep in mind that you don't always have to add new shinny parts to make more power. You must always keep in mind that there can be benefits to optimizing what you already have, nobody ever said we have a performance car right off the bat. Remember cars are a series of compromises.


Now the number one place you will always get more power from is the cylinder head. It houses all the vital parts that control how much power you can or cannot make. Everything from the surface finish to the shapes and angles of the head matter and have some effect on power.

First off, Porting.

(If I find porting school #1 it'll go here)
Porting School #2
Porting School #3
Porting School #4
Porting School #5
Porting School #6
Porting School #7
Porting School #8
Porting School #9
Porting School #10


OK. So now you understand a bit about making ports bigger or smaller and that it isn't about size, it's about shape and keeping air speed manageable and predictable. But we have to get air in and out also, so we have to look at the intake manifold and exhaust manifold. Both work on the same principals and are subject to the same flow principals, fluid dynamics (air is a fluid).


Intake & Exhaust

Helmholtz Resonance
Intake manifold tuning
Exhaust manifold design
Book covering the science behind both intake and exhaust


The Camshaft

The Cam Design handbook
Simple cam explanation
Camshaft design science



So you got air flowing well into the engine and out of it, what about the air as it's compressed in the combustion chamber. Surely we can't neglect that part, and we won't by any means. Combustion is the make or break point of any engine. Poor mixture and lack of homogeneity can cause hot spots, misfires, pre-ignition and general poor performance. So it's not something you want to take lightly. Everything in the engine leads up to and hinges on this one event.


Combustion

Wet flow bench
Cylinder Pressure based combustion
Combustion turbulence


There is a myriad of information relating to combustion dynamics and modeling. I've only posted a very slim number to give you terms to search on your own. I've also saved some in my Google Books account and my Scribd account (which I'm not sure on how to link to):
Google Books account



Last edited by iminhell; 03-29-2010 at 04:39 PM.
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Old 03-29-2010, 10:54 AM   #2
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the porting school links dont work and those were the ones i wanted to read lol. sorry for not contributing to the thread like you asked but i figured you would want to know if one of your links werent working.
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Old 03-29-2010, 01:27 PM   #3
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finally read through the balancing part!! good info!! took forever though!
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Old 03-29-2010, 04:41 PM   #4
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Quote:
Originally Posted by focusmaniaczx3 View Post
the porting school links dont work and those were the ones i wanted to read lol. sorry for not contributing to the thread like you asked but i figured you would want to know if one of your links werent working.

Fixed. Thanks.
Seems GFN did some house cleaning, whole site's changed.
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Old 03-29-2010, 08:36 PM   #5
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Old 03-29-2010, 09:52 PM   #6
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Nice post.... I think it I'm gonna sticky this.
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Old 04-18-2010, 01:53 PM   #7
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Quote:
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Edumicationial post ubout injins

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Old 04-18-2010, 03:57 PM   #8
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Nice post.... I think it I'm gonna sticky this.
Jonh before this is stickied there is a LOT of misinformation I would have some one clear up , Its great for reading (not the links I not going to sit through all that gump) but the OP post

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Old 04-19-2010, 06:20 PM   #9
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I stickied it for the links.
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Old 04-19-2010, 06:24 PM   #10
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I r confuse.

Tom, if you don't read through the links nothing else will make sense.
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