Acronyms

[Ripper]

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?

[Fuiiru]

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.

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.

[Ghost of Duluth]

Pretty good, amazingly a simple thing that no one has done.

[Fuiiru]

*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

[Parry]

it's boxer, not boxter. a boxter is a porsche.

[Fuiiru]

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 .