Acronyms, Abbreviations, Technical Terms & Jargon

[Zeke]

Originally Posted by Mycar

What does the `J` denote, as in 7J Fuchs wheels? Are different types/styles represented by other letters?

Thanks, Mike.

The J is for tubeless tires. It is a slight groove at the base of the lip where the tire bead rests. A cross section of the rim lip would show a "J" before the rest of the inner rim face. (I can see that's a tough thing to describe )

RUF is the car manufacturing and modification company owned by Alois Ruf of Germany with a dealership in TX, USA.

[TomTurtle]

PCNA = Porsche Cars North America, the Atlanta-based (last time I checked) headquarters for Porsche in North America

[RWebb]

thx - wOODY - i FIXED THE ORIGNAL.

[spuggy]

Originally Posted by RWebb

Tech. Spec. Book = Technical Specifications booklets; these were small, note-card sized booklets that Porsche published on different MY 911s. They are now mostly NLA and quite valuable as they are chock full of important information

I think they must re-print these periodically; I just bought (new) the 76-77 and 78-81 booklets a year or so ago.

[RWebb]

Porsche KG - the former version of the present company; the KG refers to its being held by family members and not having public stock

Porsche AG - a hedge fund that also makes sports cars, SUVs, and 4 passenger cars

[Bill Verburg]

Originally Posted by Mycar

What does the `J` denote, as in 7J Fuchs wheels? Are different types/styles represented by other letters?

Thanks, Mike.

J, JJ, K, JK, B, P and D are Tyre bead profiles / rim contour designations. Common wisdom has it that the letter represents the shape. ie. "J" means the bead profile is the shape of the letter "J". Not so, although "J" is the most common profile identifier. There are 64 highly technical pages defining the shape and dimensions of each profile(not light reading)

H, H2, FH, CH, EH and EH2 are Hump profiles.

If you ar ereally interested ETRTO is the governing body that can provide the details

[porsche.racer]

Originally Posted by GaryDG

More acronyms:


FD = Fuel Distributor
AFR = Air to Fuel Ratio
FV = Frequency Valve
AFM = Air Flow Meter
CD Box = Capacity Discharge Box

What about ISV & ECU

ALSO AFM or/and MAF Mass air flow meter


ISV Idle stabilizer valve
ECU Electronic control unit

[longhornchris04]

Great thread. Here's d few that I haven't seen that took a while to figure out.

ITB - individual throttle bodies - always part of EFI as carbs for Porsches have ITB by default
P&Cs - pistons and cylinders
AFR - Air-Fuel Ratio

3.2SS - 3.2L short stroke - a common 3.0 (SC) upgrade by replacing 95mm P&Cs with 98mm P&Cs. This is different from a stock 3.2 (Carrera) which used a different crank & rods.
-- a 2.4SS is a similar thing done with a 2.2 engine

[aturboman]

More recent late model stuff.

MIL= Malfunction Indicator Lamp (aka Check Eng light)
LEV= Low Emission Vehicle
ULEV=Ultra low Emission Vehicle
SAI= Secondary Air Injection
GEMS=Genereic Engine Manament System (pre OBDII)
OBDII= Onboard Diagnostic System (Gen II)
CDL=Central Door Locking
PDC=Park Distance Control (Park sensors)
EVAPS=Electronic Vapor System (Purge Valve Controlled Fuel Tank Vapor System)
SIDS=System Information Document System
CCP=Cold Climate Package (Heated Seats, Front Screen,etc)
SRS= Supplemental Restraint System (Air Bags, Pre-tensioners)
TCU=Transmission Control Unit
MFU=Multi Function Unit
BECM=Body Electronic Control Module
MSD= Material Safety Data Sheet

Too many years at the dealer because I have about 50 more, but my head hurts.

[Joe Bob]

AX= Masturbation
DE= Almost racing
TT= Real close to racing
Indy= Racing turning left......

[rattlsnak]

964 = C2 = 1990-1994 911s
964 = C4 = 1989 - 1994 911s with AWD
965 = C2 Turbo model
993 = 1995 - 1998 911s
996 = 1999-2004 911s
997 = 2005+ 911s

[RWebb]

Porsche Automotive Holding SE -- a corporate shell formed by Wienie King in his attempt to take over Volkswagon Group using derivative transactions that ultimately destroyed Porsche