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Engine code

Specifications for engines, engine components, gearboxes, engineering information.

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Engine code

Postby gse_turbo » Sat Jul 19, 2008 8:50 pm

All engines manufactured by Vauxhall/Opel - as with those of all vehicle manufacturers - have identification codes, which reveal information about a particular engine. For clarity, an example of a Vauxhall/Opel engine identification code is 'C20LET'. See that engine's node for explanation of the engine and how the designation relates to its specification.

The standard form of such an identification number (for petrol engines, as opposed to diesel engines) is as follows:

ABBCDE

Where:

A = Exhaust emission standard ahered to by the engine in question (in this case, they are European Community directives pertaining to emission limits). One of the following:
'C' = Catalytic Converter (EC 91/441/EEC)
'X' = EuroII (EC 91/441/EEC (stage 2))
'T' = OBDII
'U' = ?
'Y' = ?
'Z' = ?
'A' = ?

Where there is no letter, the engine adheres to EC directive ECE R 83 A.

BB = Engine capacity in cubic centimetres (cc). This is a two digit number - e.g. '20' means 2.0 litres, '35' means 3.5 litres.

C = Compression Ratio. One of the following:
'G' = less than or equal to 8.5:1
'L' = 8.5:1 to 9.0:1
'N' = 9.0:1 to 9.5:1
'S' = 9.5:1 to 10.0:1
'X' = 10.0:1 to 11.5:1
'Y' = more than or equal to 11.5:1

D = Mixture system. One of the following:
'E' = Multi-point fuel injection
'Z' = Central injection / TBI (Throttle Body Injected)
'V' = Carburettor
'L' = LPG (Liquified Petroleum Gas)

E = Specific vehicle version. This is often not used, and little information exists on the meaning of all the variants of this segment of the code. Some of them are:
'H' = High output / Supercharging or Turbo
'V' = Volume model
'R' = Raised Performance / Increased output
'T' = Turbo
'L' = Low End Torque
'D' = Deawoo / GMDAT


As an example, one of Vauxhall/Opel's recent engines, the X25XE (going through the identification in part order):

X - adheres to EC emission directive EC 91/441/EEC (stage 2)
25 - has a 2.5 litre capacity
X - has a compression ratio of 10.0:1 to 11.5:1
E - has multi-point fuel injection.

In addition to this, if one were to search out the engine number of the particular engine (as found stamped on the engine block, usually in front of the clutch housing), one would likely find an extended version of the code as described above, with further details in the form:

ABBCDEFFGGGGG

ABBCDE are as described above.
FF = Country of manufacture. One of the following:
'01' = Rüesselsheim
'02' = Bochum
'08' = Ellesmere Port
'14' = Kaiserslautern
'19' = Aspern
'20' = Hungary
'25' = Holden
'31' = Brazil
'0S' = Szentgotthard

GGGGG is the engine serial number.


(thank Piro for the find)


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Postby Big Jeff » Sun Jul 20, 2008 8:56 pm

how does this work wiy my engine?

my engine code is A16DMS

not sure what 'A' is but mine reads 1.6 engine, D = twin cam, m= Muti point injection, s= compression
Daewoo Lanos SX,
1.6 16v DOHC,

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Postby daewoomofo » Sun Jul 20, 2008 9:13 pm

i was thinking the same thing
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Postby gse_turbo » Sun Jul 20, 2008 11:59 pm

I got to wondering the same thing when I posted the list but I can't find the info. I'm hoping that someone that's done a bit more research on the A16 will be able to chime in.

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Postby Big Jeff » Mon Jul 21, 2008 3:49 pm

this says that 'A' in line and 'V' V type

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hope this help and thanks to MM i founds this in the how to section
Daewoo Lanos SX,
1.6 16v DOHC,

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Postby gse_turbo » Mon Jul 21, 2008 9:21 pm

nice find... to you and MM... now it's where it should be! :D
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