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Old 07-13-2004, 08:46 AM   #1
Fuiiru
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Acronyms

Well, its pretty late and im really bored, so i thought i'de do something usefull for a change. So I'm starting to compile a list of acronyms and definitions for the newcomers of both drifting, and the automotive world. To help try and educate them, seeing as though some can't be bothered to search for themselves, or maybe they don't know exactly what to search for. They might type in LSD and instead get a bunch of sites on the drug . I'm not going to include chassis codes on specific cars because their are just too many. Feel free to add and please don't hesitate to correct me of any mistakes...

P.S. I do not encourage the consumption of lysergic acid diethylamide or any other illegal narcotics...

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RWD- Rear Wheel Drive
FWD- Front Wheel Drive
AWD- All Wheel Drive
4WD- Four Wheel Drive
FR- Front Engine, Rear Wheel Drive
FF- Front Engine, Front Wheel Drive
MR- Mid Engine*, Rear Wheel Drive
RR- Rear Engine**, Rear Wheel Drive
Lx- An engine with the cylinders aligned in a straight and inline fashion
Vx- An engine with the cylinders, when looks at from the front, are aligned in a V formation.
Boxer- A horizontally opposed engine, meaning that the cylinders oscillate in a horizontal motion, rather than a vertical.
SOHC- Single Overhead Camshafts
DOHC- Dual Overhead Camshafts
EFI- Electronic Fuel Injection
DFI- Direct Fuel Injection
TDC- Top Dead Center
BDC- Bottom Dead Center
AFR- Air Fuel Ratio
AFC- Air Flow Control
CCV- Closed Crankcase Ventilation
LSD- Limited Slip Differential
VLSD- Viscous Limited Slip Differential
VCD- Variable Central Differential
ABS- Anti Lock Brakeing System
AYC- Active Yaw Control
VTEC- Variable Valve Timing and Lift Electronic Control
VVTi- Variable Valve Timing Intelligence
TCS- Traction Control System
ASM- Anti Spin Mechanism
ECU- Electronic Control Unit
RPM- Revolutions Per Minute
PSI- Pounds Per Square Inch
BHP- Brake Horsepower
RWHP- Rear Wheel Horsepower
HUD- Heads Up Display
BOV- Blow Off Valve
A/C- Air Conditioning
LCD- Liquid Crystal Display
LED- Light Emitting Diode
VIN- Vehicle Identification Number
OEM- Original Equipment Manufacturer
CAFE- Corporate Average Fuel Economy
MSRP- Manufacturer's Suggested Retail Price

*Mid being infront of the rear axle
** Rear being behind the rear axle

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I've Posted links to this information before, but i thought it would be more convenient if i just put them here. Those links can be found here

Nissan Engine Code Breakdown

The first letter(s) signify engine family, the numerals that follow explain the engines displacement. The suffixes at the end explain any additional features.

Note:These are suffixes
E- Electronic Fuel Injection
D- Dual Overhead Camshafts
T- Turbocharged
TT- Twin Turbocharged

Toyota Engine Code Breakdown

The numbers at the beginning signify the age of the bottom-end design (ie the larger the number the newer the design). The letter(s) after this number then identifies which engine family the specific engine belongs to. The suffixes at the end explain any additional features.

Note:These are suffixes
E- Electronic Fuel Injection
F- Economy type engine with narrow angle head
G- Dual Overhead Camshafts
Z- Supercharged
T- Turbocharged (either single or twin)

Mazda Engine Breakdown

From what i can see, Mazda does not use a specific engine classification method, rather, their engines are named according to that design. I will just list the names of the rotary engines here, for more information on Mazda engines feel free to visit the link provided earlier.

12A- Early Model Twin Rotor Wankel Rotary
13B- Later Model Twin Rotor Wankel Rotary
13B-REW - Later Model Twin Rotor Wankel Rotary Sporting Twin Turbos
20B- Triple Rotor Wankel Rotary
RENESIS- Twin Rotor Wankel Rotary. The name is derived from 'Rotary Engine' 'Genesis'

Honda Engine Code Breakdown

Honda's method of engine classification is rather simple. First letter(s) signify engine family, numerals then show engine displacement and suffixes signify engine generation.

Note:These are suffixes
A- First Generation Engine
B- Second Generation Engine

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This is only what i could remember right now, there is so much more out there, but your not doing any good asking the most basic of questions here. Please do your own research before asking a question, educate yourself. Good places to start are Google or the auto section at How Stuff Works .

Last edited by Fuiiru; 07-15-2004 at 06:26 AM.
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Old 07-13-2004, 08:55 AM   #2
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it's boxer, not boxter. a boxter is a porsche.
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Old 07-13-2004, 09:49 AM   #3
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*Fixed*

Thank you

I've also decided to include an explanation on a few engine codes. Even though I should be asleep by now. 2:48am
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Old 07-13-2004, 09:54 AM   #4
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Pretty good, amazingly a simple thing that no one has done.
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Old 07-13-2004, 10:26 AM   #5
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i'll assume that VLSD is a variation of the LSD then? i recall nissanguy writing something about it in his overview on the s13 chassis.
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Old 07-13-2004, 11:01 AM   #6
Fuiiru
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Quote:
Originally posted by ozzimark
i'll assume that VLSD is a variation of the LSD then?
That is correct. VLSD means Viscous Limited Slip Differential and is generally used for grip applications. How it achieves this, I'm not too sure myself. However, an explanation can be found here.

Last edited by Fuiiru; 07-13-2004 at 11:06 AM.
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Old 07-13-2004, 11:32 AM   #7
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Quote:
Originally posted by Parry
it's boxer, not boxter. a boxter is a porsche.
lmao. hmmm there' s this one, but can't seem to remember? maybe it's like RWHP or WD40? wht does WD stand for? huuuh?
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Old 07-13-2004, 11:49 AM   #8
Fuiiru
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Quote:
Originally posted by Ripper
lmao. hmmm there' s this one, but can't seem to remember? maybe it's like RWHP or WD40? wht does WD stand for? huuuh?
RWHP- Rear Wheel Horsepower
WD40- Water Displacement, 40th Attempt
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Old 07-13-2004, 12:17 PM   #9
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I've seen this on the subaru owners fourm, they had like...ten pages of stuff... but yea good looking out for posting this to those that dont know.


Also I've asked alot of people who i think know alot about cars and suspension, none know what the $%^# Yaw is, could somone please enlighten me?

Last edited by panda_3ight_6; 07-13-2004 at 12:20 PM.
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Old 07-13-2004, 05:13 PM   #10
Fuiiru
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Quote:
Originally posted by panda_3ight_6
Also I've asked alot of people who i think know alot about cars and suspension, none know what the $%^# Yaw is, could somone please enlighten me?
An explanation of what Yaw is can be found here . Yaw is generally a term used in aviation. It is the horizontal rotation of an object along its centre of gravity. So its basically just a fancy term for turning.

An explanation of how the AYC works can be found here . The AYC works as an electronic torque splitter, distributing torque to the desired wheel. It's purpose is to enhace better grip and steering responese whilst driving through the bend itself. In an understeering condition, the inner wheel would be given more torque and the outer wheel given less for a better turning rate.

Last edited by Fuiiru; 07-13-2004 at 05:18 PM.
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Old 07-13-2004, 06:27 PM   #11
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its funny cuz i wuz gonna post something exactly like this (except the fact that i didn't already know all of that but my account hadn't been activated since i almost never check my e mail.... dumb mistake i guess, but u should all know that im not just some dumb newbie, i know what i gotta know... anyways i think thats just a great artical and its just what we need and it should be made a sticky at least or even go right at the top of the home page. good work dude.
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Old 07-15-2004, 10:15 PM   #12
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This is helpful for newbies like myself. Since I'm in the "New to Drifting" forum, can someone tell me what a 'hachi' is?
(yes, oh my god what a newb!!)
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Old 07-16-2004, 01:48 AM   #13
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hachi is 8. roku is 6. hachiroku is *drumroll please..........*
































Eight-Six
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Old 07-16-2004, 05:34 AM   #14
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Thanks alot
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Old 07-21-2004, 10:27 AM   #15
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I dont think your right about the honda engines. My dads crv has an 18b but its a 2.4 liter. i dont think the number means displacment. they have an explanation of yaw in gran turismo 2 actually. YAW generates rotational movement by controlling the distribution of torque between the left and right drive wheels.
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Old 07-30-2004, 06:43 PM   #16
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Re: Acronyms

Quote:
Originally posted by Fuiiru
Mazda Engine Breakdown

From what i can see, Mazda does not use a specific engine classification method, rather, their engines are named according to that design. I will just list the names of the rotary engines here, for more information on Mazda engines feel free to visit the link provided earlier.

12A- Early Model Twin Rotor Wankel Rotary
13B- Later Model Twin Rotor Wankel Rotary
13B-REW - Later Model Twin Rotor Wankel Rotary Sporting Twin Turbos
20B- Triple Rotor Wankel Rotary
RENESIS- Twin Rotor Wankel Rotary. The name is derived from 'Rotary Engine' 'Genesis'

[[/B]
Let me break down the rotary engines even further,because those links you provided didn't do so.The letters in the rotary engine codes aren't just some specific engine classification method,they're the actual displacement of the engines themselves as well,the A or B classifys the form of fuel injection.

The 12A comes from the 1.2 litre displacement.All the engines with an A are carburated.All of the engines with a B have electronic fuel injection.And so forth
13B=1.3 litre displacement,electornically fuel injected
13B-REW=the same with twin turbos.
20B=2.0 litre displacement,twin turboed also.
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Old 08-05-2004, 03:18 AM   #17
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Regarding Yaw Control really quick, (hopefully)

Its not just a fancy word for turning partake, more like a fancy way of turning. Advance Yaw control system is in fact system which turns the car by controlling the individual wheel spin, i.e. putting the more power to the outside wheels when in a turn to compensate for the understeer... so in stead of just front wheels and back wheels in the case of and active diff, this goes alittle further, and is usually expensive usually raking in about 50k for the systems used on the WRC Mitsubishi cars.
Thrillz
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Old 08-06-2004, 05:34 AM   #18
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Quote:
Originally posted by TeamSLIPdrifter
I dont think your right about the honda engines. My dads crv has an 18b but its a 2.4 liter. i dont think the number means displacment. they have an explanation of yaw in gran turismo 2 actually. YAW generates rotational movement by controlling the distribution of torque between the left and right drive wheels.
What year CRV? Last time i checked they came with the B20 engines. Thats how people can get a B20 block real cheap and throw on a B16 head.
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Old 08-06-2004, 11:35 AM   #19
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Another Rotory

12A- Early Model Twin Rotor Wankel Rotary
13B- Later Model Twin Rotor Wankel Rotary
13B-REW - Later Model Twin Rotor Wankel Rotary Sporting Twin Turbos
20B- Triple Rotor Wankel Rotary
RENESIS- Twin Rotor Wankel Rotary. The name is derived from 'Rotary Engine' 'Genesis'

Dont forget the R26B its the 4 rotor le mans winner, before they banned rotories. It has 3 spark plugs per cyl. and a fancy adjusting intake. But I dont think anyone every put one in a street car. Check out these links
http://www.geocities.com/fdkaimember/r26b.html
and
http://www.mymazdarotary.com/mazda_r...paper_html.htm

Lucidstrife
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Old 08-13-2004, 08:55 PM   #20
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LED- Light Emitting Diode? When do we use that? I learned that thing in physics class, but forgot about it...
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Old 08-13-2004, 10:14 PM   #21
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Quote:
Originally posted by Thai Juku
LED- Light Emitting Diode? When do we use that? I learned that thing in physics class, but forgot about it...
look closely at the G35 taillights. also, LED's are found on your alarm clock (only if they are digital display). one way you can tell if it's LED is that they illuminate.
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Old 08-13-2004, 10:28 PM   #22
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Thanks man...But I don't why it's so significant in terms of drifting...
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Old 08-13-2004, 11:14 PM   #23
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Quote:
Originally posted by Thai Juku
Thanks man...But I don't why it's so significant in terms of drifting...
headunits? the AFC controller and that good stuff?
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Old 08-16-2004, 05:57 PM   #24
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Man good post.

There were a few things on that list i didn't actually know.

(still new to cars and drifting.)
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Old 09-25-2004, 08:23 AM   #25
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The crv is a 2003.
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