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Discussion Starter · #1 ·
I have copied this from Wikepedia about the Family Z engine in the Antara. Note that it does not have a belt drive!

The engine features chain-driven DOHC valvetrain with hydraulic tensioners, twin balance shafts in the oil pump and electronically-controlled variable-geometry turbocharger; the common rail system operates at pressures of up to 1,800 bar, maximum in-cylinder pressure is 180 bar, improving on power and torque. Compression ratio is 16.5:1.

For 2012, compression ration is reduced to 16.3:1 and a new intake port increases air flow and swirl control, improving nitrogen oxide (NOx) emissions and performance
 

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Discussion Starter · #2 ·
From an Official Vauxhall Press release (for Mk 2 Facelift i.e. 2012-13 models)


This
new diesel unit is among the most efficient engines in its capacity class. Its
high specific power output, low emissions and reduced NVH are achieved by use
of:<?: prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" />



-
Engine block with high structural rigidity (reduced noise and vibration)

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Engine block cooling jacket with horizontal cooling-fin design (optimised cooling)

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Dual-mass flywheel (reduced drivetrain vibration)

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Oil-pump integrated balance shaft module (compactness, reduced engine vibration)

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New DOHC aluminium cylinder head with variable swirl control (flow and swirl
properties)

- Watercooled turbocharger with charge air
cooling and variable turbine geometry

(cylinder
charging and driveability)

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Maintenance-free camshaft chain drive with automatic chain tensioner

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Fuel injection pressure up to 1,800 bar (mixture preparation)

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Compression ratio reduced to 16.3:1 (increased power, reduced emissions and
combustion noise)

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Optimised pre-heating system (improved cold-weather starting)

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Exhaust gas recirculation with highly efficient cooling system (emissions
reduction)

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Maintenance-free close-coupled diesel particulate filter (DPF)

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Pistons with oil-spray cooling



<h1 style="margin: 0cm 0cm 0pt; line-height: 18pt;">Optional
manual or automatic transmission</h1>



Two
new six-speed transmission systems, one manually-operated and one automatic, combine
efficiency with ease of operation. High-tech details like precision-designed
"Monoblock" gear wheels and upgraded bearing elements in the manual
gearbox ensure fluent gear changes and minimise friction and vibration.



A
widely-spaced final drive ratio allows excellent response in first gear
combined with a relaxed cruising gait in top gear. In addition, drivers have
two programs available at the push of a button, depending on whether they want
to "cruise" or drive more enthusiastically. The transmission also
includes an automatic stage-by-stage braking system, which prevents unwanted up-shifts
while the vehicle is coasting downhill.



<h1 style="margin: 0cm 0cm 0pt; line-height: 18pt;">Optional
front-wheel or all-wheel drive</h1>



Depending
on their needs, Antara buyers can specify their Antara with either front- or variable
all-wheel drive. The latter combines the advantages of front-wheel drive – such
as low fuel consumption – with additional power, grip and safety.



The
all-wheel drive Antara uses a system called ITCC (Intelligent Torque Controlled
Coupling) which uses an electromagnetic pilot coupling and hydraulic
multi-plate wet clutch housed in a single rear axle module unit. This
combination ensures an ultra-quick response to changing road conditions, while
also making the unit compact, lightweight and maintenance-free.



Working
together, the ITCC and electronic stability control (ESC) continually compare
wheel-speed, steering angles and accelerator position, and if traction is poor
across the front axle, the system reacts within 0.1 seconds to seamlessly
re-distribute power as required. Depending on driving conditions, the torque
distribution range spans from 100 per cent front-wheel drive to 50 per cent
across each axle, and all variations in between.
 

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Drivingmad said:
I have copied this from Wikepedia about the Family Z engine in the Antara. Note that it does not have a belt drive!

The engine features chain-driven DOHC valvetrain with hydraulic tensioners, twin balance shafts in the oil pump and electronically-controlled variable-geometry turbocharger; the common rail system operates at pressures of up to 1,800 bar, maximum in-cylinder pressure is 180 bar, improving on power and torque. Compression ratio is 16.5:1.

For 2012, compression ration is reduced to 16.3:1 and a new intake port increases air flow and swirl control, improving nitrogen oxide (NOx) emissions and performance
This is for the facelift onward 2.2 diesel engine. The earlier model with the 2.0d is belt drive.

Andy
 

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Discussion Starter · #4 ·
Note that the VX blurb does not mention DPF at all. They should have kept the notorious dual mass flywheel hidden too! I expect that the DMF is NOt covered by the warranty either.
 

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I'm sorry 'driving mad ' but it does mention DPF - Maintenance-free close-coupled diesel particulate filter (DPF).
I think they're having a laugh with the maintenance free bit though !
 

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Discussion Starter · #6 ·
I was told I needed new spex, 57! Is this maintenance free similar to the "fuel economy" figures which I will remind you are, for the 4x4 MANUAL models :- URBAN EXTRA URBAN COMBINED
160BHP 35.8MPG 50.4MPG44.1MPG
180BHP 38.8MPG 50.4MPG 44.1MPG
Similar figures for the two models then ? So why bother with the 160 as the CO2 figure is 170 grams/km for both. Unless these figs., taken from p30 Antara brochure VM 1210118, ARE WRONG
 

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Drivingmad said:
I was told I needed new spex, 57! Is this maintenance free similar to the "fuel economy" figures which I will remind you are, for the 4x4 MANUAL models :- URBAN EXTRA URBAN COMBINED
160BHP 35.8MPG 50.4MPG44.1MPG
180BHP 38.8MPG 50.4MPG 44.1MPG

Youshouldpost that in the joke section
 

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Just goes to show what utter rubbish the marketing department can get away with!!


They are all the same to be honest, infact the Antara is probably closer to "official" mpg than many others. My mate has a 58 Golf 2.0TD & on a run we do his returns 45mpg & mine 40.
 

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My little old audi 1.8 does better than the book. I've had 49.5mpg on long motorway runs, and typically 40-45mpg.

That is with very careful driving as I claim per mile for work, so want to maximum how much I get. It's not so good it you want some fun as it's a very revvy engine.
 
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