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[kris9128]

Just been reading a guide, so I thought I'd post the details up on here incase anyone's interested

The first digit of the code relates to the emissions regs the engine meets.

Z = euro 4
Y = euro 3
X = euro 2
C = euro 1

Cars made before the emissions regulations have no letter at the start of the code.

The next 2 digits are the capacity.

For example, the 20 in C20 XE means 2 litre.

The next letter is the compression ratio.

G = 8 to 8.5:1
L = 8.5 to 9:1
N = 9 to 9.5:1
S = 9.5 to 10:1
X = 10 to 11.5:1
Y = 11.5+:1

The next digit relates to the fuelling.

D = diesel
E = multi-point injection
Z = single-point injection
V = carburettor

Some engines have an extra code at the end, if they are different from normal

For example:

H = high output
R = increase output
T = turbo
V = volume model

[HerefordElite]

Just been reading a guide, so I thought I'd post the details up on here incase anyone's interested

The first digit of the code relates to the emissions regs the engine meets.

Z = euro 4
Y = euro 3
X = euro 2
C = euro 1

Cars made before the emissions regulations have no letter at the start of the code.

The next 2 digits are the capacity.

For example, the 20 in C20 XE means 2 litre.

The next letter is the compression ratio.

G = 8 to 8.5:1
L = 8.5 to 9:1
N = 9 to 9.5:1
S = 9.5 to 10:1
X = 10 to 11.5:1
Y = 11.5+:1

The next digit relates to the fuelling.

D = diesel
E = multi-point injection
Z = single-point injection
V = carburettor

Some engines have an extra code at the end, if they are different from normal

For example:

H = high output
R = increase output
T = turbo
V = volume model

ah ha explains a lot cheers Kris

[humbucker]

i've also seen a couple of good example cav 2.5 v6s. was hoping to move away from a v6 really, got the x30xe in the elite and could do with an engine that was easier to work on. and cheaper to run...

[Jay w]

Am I correct in recalling that Cosworth did the heads and manifolds for the C20XE, while Lotus did the manifolds for the more emmision friendly X20XE??

on the earlier c20xe units cosworth supplied the coscraft head which had the oil and water channels futher apart thus reducing the likelyhood of 'porous head'. theyre the head of choice if you can get one. after this the later ones were gm heads made by karl someone or another in germany, not the best regarded addition to the engine bay!

not quite the case......

GM took castings from Cosworth, however they were not very good casting and the oilway was out of spec, this meant that there was not a lot of metal between the oil and waterway.
It is possible to sleeve the il and waterway, this allows the head to be reused, a GM head that has been sleeved is in every way as good as a coscast head in terms of reliability.

People have used the 'Cosworth' name to inflate the price........badge marketing at its best

[humbucker]

after all that i went and bought a c25xe instead....!!

picking it up next week, but bought a 1994 cavalier cdx saloon, diamond black c25xe redtop v6, really good condition, low miles (a shade over 100k), one owner from new(!), all the toys, heated leather, a/c, abs, t/c, electric everything, totally standard except for koni adjustable shocks and eibach lowering springs complimented by some 17" wheels. looking forward to playing about with her.

was trying to veer away from another v6 but when i saw this one and the condition she's in i changed my mind. besides, all the c20xe's ive checked out look like theyre on their last legs!

so another vx v6. does this qualify as a fleet?! if anyone's interested i'll pop some pics up at some point.

[VXL V6]

after all that i went and bought a c25xe instead....!!

picking it up next week, but bought a 1994 cavalier cdx saloon, diamond black c25xe redtop v6, really good condition, low miles (a shade over 100k), one owner from new(!), all the toys, heated leather, a/c, abs, t/c, electric everything, totally standard except for koni adjustable shocks and eibach lowering springs complimented by some 17" wheels. looking forward to playing about with her.

was trying to veer away from another v6 but when i saw this one and the condition she's in i changed my mind. besides, all the c20xe's ive checked out look like theyre on their last legs!

so another vx v6. does this qualify as a fleet?! if anyone's interested i'll pop some pics up at some point.

Not quite, there is no V6 redtop (just the cover sticker may be red but not redtop as in the meaning of C20XE redtop).

Cavalier V6 is a fantastic car   so understated in looks but v6 really feels alive in the light Cavalier body, much like the Calibra.

[humbucker]

after all that i went and bought a c25xe instead....!!

picking it up next week, but bought a 1994 cavalier cdx saloon, diamond black c25xe redtop v6, really good condition, low miles (a shade over 100k), one owner from new(!), all the toys, heated leather, a/c, abs, t/c, electric everything, totally standard except for koni adjustable shocks and eibach lowering springs complimented by some 17" wheels. looking forward to playing about with her.

was trying to veer away from another v6 but when i saw this one and the condition she's in i changed my mind. besides, all the c20xe's ive checked out look like theyre on their last legs!

so another vx v6. does this qualify as a fleet?! if anyone's interested i'll pop some pics up at some point.

Not quite, there is no V6 redtop (just the cover sticker may be red but not redtop as in the meaning of C20XE redtop).

Cavalier V6 is a fantastic car   so understated in looks but v6 really feels alive in the light Cavalier body, much like the Calibra.

aye its not a redtop per se but the version of the 2.5 V6 with the red lid  

trying to source a matching gsi bodykit atm, colour matched gsi grille arrived this morning and also sourced a gsi splitter. ripped a cd changer and head unit out of an omega elite to fit into it so that at least theres a half decent stereo in there but will no doubt be playing about with her once she's here.

ha, must be running out of things to fix on the omega  

you're right about power though, all that engine in half the bodyweight of the omega, she will fly, and while the c25xe probably isnt the best engine to play about with im sure i can find an extra few bhp from somewhere...

[VXL V6]

Enlarged throttle body and lightened flywheel (you lose the engine braking effect though!)

[humbucker]

Enlarged throttle body and lightened flywheel (you lose the engine braking effect though!)

 

you speak from experience?!

[VXL V6]

Nope, but all the Cavalier / Calibra and Vectra boys seem to do these mods.

One of the chaps who worked at the Ellesmere Port V6 factory on all aspects of the V6 for the 9 years of production told me that he tried a Vectra B with a 3.0 conversion and lightened flywheel and it was the fastest accelerating V6 he'd been in, the only downside was that the engine braking when changing down was vastly reduced.

Oh and another good mod would be 3.0 cams (G I think).

All depends how much you want to spend. If it was me i'd probably keep it pretty much standard if it was a second car..... famous last words!!!

Then again...

Cavalier Turbo bodykit  
Cavalier / Calibra Turbo Alloys  
Leather seats  

Oh no, you've started me thinking!!!!  

[humbucker]

Nope, but all the Cavalier / Calibra and Vectra boys seem to do these mods.

One of the chaps who worked at the Ellesmere Port V6 factory on all aspects of the V6 for the 9 years of production told me that he tried a Vectra B with a 3.0 conversion and lightened flywheel and it was the fastest accelerating V6 he'd been in, the only downside was that the engine braking when changing down was vastly reduced.

Oh and another good mod would be 3.0 cams (G I think).

All depends how much you want to spend. If it was me i'd probably keep it pretty much standard if it was a second car..... famous last words!!!

Then again...

Cavalier Turbo bodykit  
Cavalier / Calibra Turbo Alloys  
Leather seats  

Oh no, you've started me thinking!!!!  

picked her up saturday. black cdx 2.5i 24v V6 L-reg, c25xe engine with red lid, full leather, full electrics, every option ticked, powerflow stainless system, interior immaculate, leather looks like its never been sat in apart from slight wear on drivers bolster, irmscher boot spoiler, koni adjustable shocks and eibach springs lowered 40mm, 17" 5 stud 5 spoke alloys, full vxsh, aircon, abs, tc, alarm, immobiliser, a shade over 100k on clock (nothing for these engines, especially for a 14 year old car), ONE OWNER FROM NEW(!), new fuel tank, new radiator, years MOT, new alternator, new windscreen, tyres look like brand new AND original CDX alloys with new tyres thrown in as well. cambelt doesnt need doin for a while. the list goes on. i am stoked. properly stoked. body is in great shape too.

she's only done 10k miles over the last three years and averaged 8k a year from new so under the bonnet seems to be in tip top condition as far as i can tell. i'm sure some snags will appear over the coming weeks but nothing that raises alarm bells.

going to apply a few mods and bits to play about with, but overall i'm dead chuffed. she flies too, and mrs ilovemyelite doesnt mind finding her lead foot either hehehe

[Mr Skrunts]

Nope, but all the Cavalier / Calibra and Vectra boys seem to do these mods.

One of the chaps who worked at the Ellesmere Port V6 factory on all aspects of the V6 for the 9 years of production told me that he tried a Vectra B with a 3.0 conversion and lightened flywheel and it was the fastest accelerating V6 he'd been in, the only downside was that the engine braking when changing down was vastly reduced.

Oh and another good mod would be 3.0 cams (G I think).

All depends how much you want to spend. If it was me i'd probably keep it pretty much standard if it was a second car..... famous last words!!!

Then again...

Cavalier Turbo bodykit  
Cavalier / Calibra Turbo Alloys  
Leather seats  

Oh no, you've started me thinking!!!!  

picked her up saturday. black cdx 2.5i 24v V6 L-reg, c25xe engine with red lid, full leather, full electrics, every option ticked, powerflow stainless system, interior immaculate, leather looks like its never been sat in apart from slight wear on drivers bolster, irmscher boot spoiler, koni adjustable shocks and eibach springs lowered 40mm, 17" 5 stud 5 spoke alloys, full vxsh, aircon, abs, tc, alarm, immobiliser, a shade over 100k on clock (nothing for these engines, especially for a 14 year old car), ONE OWNER FROM NEW(!), new fuel tank, new radiator, years MOT, new alternator, new windscreen, tyres look like brand new AND original CDX alloys with new tyres thrown in as well. cambelt doesnt need doin for a while. the list goes on. i am stoked. properly stoked. body is in great shape too.

she's only done 10k miles over the last three years and averaged 8k a year from new so under the bonnet seems to be in tip top condition as far as i can tell. i'm sure some snags will appear over the coming weeks but nothing that raises alarm bells.

going to apply a few mods and bits to play about with, but overall i'm dead chuffed. she flies too, and mrs ilovemyelite doesnt mind finding her lead foot either hehehe

Nice one matey, get some piccies in the gallery.  

[Jay w]

as has already been said, the common mods on these are the G spec 3.0 cams, 2.0 XE flywheel (2/3rds the weight of the original) ported throttle body and a 4 bar adjustable pressure reg that has been set up for the engine on a dyno.
That coupled with a chip, decat and performance exhaust and pipercross viper induction system will see the other side of 200 bhp, possibly even 210 if set up really well......trust me  

[VXL V6]

Blimey!

That's a seriously good find!  

[humbucker]

as has already been said, the common mods on these are the G spec 3.0 cams, 2.0 XE flywheel (2/3rds the weight of the original) ported throttle body and a 4 bar adjustable pressure reg that has been set up for the engine on a dyno.
That coupled with a chip, decat and performance exhaust and pipercross viper induction system will see the other side of 200 bhp, possibly even 210 if set up really well......trust me  

i'll think about engine mods at some point when i've had her running for a while, work out if anything needs fixing first. in the meantime today i took delivery of a matching colour gsi rear bumper, side skirts, door panels etc, debadged gsi front grille and gsi boot spoiler. oh and some colour coded vectra door handles to replace the black plastic ones. on the look out for a matching colour gsi / turbo front bumper now and got some turbo smoked rear lights on the way. whoo hoo! i should point out i'm not going to chav her up, just some tasteful mods!!

going to give her a proper clean too as she had cobwebs on her when i picked her up. probably didnt know what hit her; 300 mile journey from seller to my house. worth the travelling but that seems to be a marathon journey for this car!!! hehe!! the sound of that exhaust though, whoa...!! v6's SHOULD sound like this!