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Nurb608
10th May 2012, 07:25 PM
Rüsselsheim. The strongest four-cylinder gasoline engine on the European market in terms of highest specific torque comes from Opel. The turbocharged, direct-injection, 1998 cm3, all-aluminum unit in the Astra OPC not only has a maximum power output of 280 hp; with 200.2 Nm per liter, it has higher specific torque than any of its rivals, more even than super sports cars. The maximum torque of 400 Nm is developed at 2,450 rpm, stretching all the way to just under 5,000 rpm in a very wide plateau which ensures that the Astra OPC can deliver high performance in a variety of situations.

The Opel engineers carried out far-reaching changes on the existing turbocharged direct injection 2.0 liter gasoline unit used in the Insignia, giving it a more sporty edge and adding extra power to it. A completely new state of the art engine air intake system was developed in order to feed as much air to the turbocharger as possible. The turbocharger itself was further improved to withstand more charge air pressure and therefore the durability of the charger was increased accordingly by using new components. The build-up of pressure starts as early as around 1,400 rpm; gas pedal movements thus result in immediate and powerful propulsion. The maximum charge pressure has been increased to 1.5 bar – that represents a 25 percent increase compared to the one previously used in the Insignia.

A powerful car like the Astra OPC needs a powerful sound track that appeals to the emotional side of the high performance car enthusiast. That is why sound engineering played an important role in the development of the car. The engineers wanted to deliver the robust and masculine exterior sound typical of all Astra OPCs.
They also wanted to re-create the jet noise like sound on the interior which OPC fans will remember from the last Astra when the driver accelerates from the mid to high rpm range. This is especially noticeable when changing up from third into fourth gear under acceleration.

12 percent fuel saving

The Astra OPC that comes with Start/Stop technology as a standard, consumes 8.1 liters per 100 kilometers, a CO2 value of 189 g/km. These are highly competitive figures in the high performance segment. Compared to the previous model (221 g/km, 9.2 l/km), CO2 emissions and fuel consumption are now 14 percent/12 percent lower. The new high performance coupe can sprint from standstill to 100 km/h in just six-point-zero seconds.

Before the modified Astra OPC engine could go into production, it was subjected to a series of challenging tests. Then it was put to an endurance test of 10,000 kilometers in the Astra OPC on the Nordschleife segment of the Nürburgring race track under racing conditions which equivalent of 180,000 kilometers on normal roads.

http://i597.photobucket.com/albums/tt57/nurb608/Veccy%20C/Cars/1336562219557.jpg

Source: http://media.gm.com/content/media/intl/en/opel/news.detail.html/content/Pages/news/intl/en/2012/opel/05_09_astra_opc?utm_medium=twitter&utm_source=twitterfeed

DJM83
10th May 2012, 07:32 PM
Promising that's for sure, the more I hear the more I like.

hazrd
10th May 2012, 07:33 PM
oh my fking god... i just pee'd a little

1.5bar? that like... 21psi standard!!!?!?!




must... save... pennies

gmonkey
10th May 2012, 07:38 PM
1.5bar explains the figures... Hope it's a good turbo!

Shall be insane im loving the torque figures and rpm level!

Heres hoping a good LSD too with it

Nurb608
10th May 2012, 07:39 PM
oh my fking god... i just pee'd a little

1.5bar? that like... 21psi standard!!!?!?!




must... save... pennies

There is also a cheap turbo upgrade already for it out of the states as the motor itself has been used there for quite some time, although this has version is nearly like the difference between the LET and LEH by the looks of it.

Nurb608
10th May 2012, 07:41 PM
1.5bar explains the figures... Hope it's a good turbo!


Twin scroll pretty sure. The direct injection helps to.

gmonkey
10th May 2012, 08:04 PM
So it's z22yh meets z20leh with a big efficient turbo


Cool :p

mickos
10th May 2012, 08:05 PM
Sounds pretty good if you ask me

dutchy
10th May 2012, 08:37 PM
Sounds all nice. Would be plenty left to tune it though. Anyone here has the "jet sound like noise...." ?

sooty
10th May 2012, 08:38 PM
Stop start technology sounds like the only downside

hazrd
10th May 2012, 08:44 PM
Sounds all nice. Would be plenty left to tune it though. Anyone here has the "jet sound like noise...." ?

Ive heard it on Rory's car I think

dutchy
10th May 2012, 08:51 PM
Ive heard it on Rory's car I think

The apparent normal / standard "jet noise" or the turbo charger squeeling it's guts out cause it's above efficiency ? :smile5:

Nurb608
10th May 2012, 09:15 PM
The apparent normal / standard "jet noise" or the turbo charger squeeling it's guts out cause it's above efficiency ? :smile5:

How is it above efficiency? Plenty of cars running more boost than mine ;)

dutchy
10th May 2012, 10:46 PM
I've had mine boosting too much for the turbo (old one) and it did exactly the same. Squeeling its nuts off which indeed sounded like a jet taking off.

hazrd
11th May 2012, 05:37 AM
I thought it was that "sweet spot" before changing gears. most noticeable with a decent exhaust... hard to describe the jet sound... like a "zip" of acceleration prior to changing gears

Vectracious
11th May 2012, 07:00 AM
21 psi? Will be interesting to see what the reliability is like.

hazrd
11th May 2012, 07:47 AM
Considering the amount of testing they performed I would assume they would be pretty reliable :)

Vectracious
11th May 2012, 07:49 AM
I hope so. But still not convinced about accelerated reliability testing. It's like drugs, most of the side effects are found out only after its released to the general public.

JohnBu
11th May 2012, 08:50 AM
I'm impressed.

I don't think 21psi is going to be an issue for the engine/turbo for the vast majority of owners. But I doubt the turbo is designed to last more than 200k anyway...

The real test is when people start modding them to get even more power out of them and winding up the boost even more..


Sounds all nice. Would be plenty left to tune it though. Anyone here has the "jet sound like noise...." ?


Ive heard it on Rory's car I think

That was Rory making the sound. Kylie can confirm he does it while he sleeps also.

gmonkey
11th May 2012, 09:05 AM
I've had mine boosting too much for the turbo (old one) and it did exactly the same. Squeeling its nuts off which indeed sounded like a jet taking off.

Probs pressure leaking through wastegate or something

Vectracious
11th May 2012, 09:15 AM
I'm impressed.

I don't think 21psi is going to be an issue for the engine/turbo for the vast majority of owners. But I doubt the turbo is designed to last more than 200k anyway...

The real test is when people start modding them to get even more power out of them and winding up the boost even more..





That was Rory making the sound. Kylie can confirm he does it while he sleeps also.

I'm just going from what I heard once that daily drivers prob shouldn't be running more than 15psi. But sounds like opel have really strengthened the motor so 21psi will be ok day in day out.

Nurb608
11th May 2012, 09:25 AM
I'm just going from what I heard once that daily drivers prob shouldn't be running more than 15psi. But sounds like opel have really strengthened the motor so 21psi will be ok day in day out.

There are some specs including increased cooling jackets and new exhaust valves on wiki. Search for the lnf motor as that's what it's based on, I think lol

Hoss
11th May 2012, 10:03 AM
Here's hoping they bring the OPC variants to Oz? That's exactly the motor Holden should have put in the Cruze (or the V6 from the Insignia).

gmonkey
11th May 2012, 10:36 AM
TG article..
http://www.topgear.com/uk/car-news/vauxhall-astra-vxr-performance-2012-05-10

0-100 in 5.9sec

also the torque figure is different isnt it?

chrissn89
11th May 2012, 11:09 AM
In the states they're getting huge power out of the cobalts with the LNF motors few mods and turbo upgrade in the very low 12 seconds down the 1/4 mile. The OPC will be a quick car.

lonewolf1983
12th May 2012, 06:08 AM
sub 6 sec 0-100 is properly quick.
400nm is a good mark to make, the EVO is making that sort of torque, same with the JDM STI.

Direct injection helps with the high boost levels as it cools the combustion chamber better than port injection

sooty
12th May 2012, 09:38 AM
There's some serious power coming out of small motors from standard these days. The new Subaru legacy gt will come with a 2.0 direct injected turbo with 225kw and 400nm as well.
Wonder what the next wrx STi will have given that's the case

metry
12th May 2012, 02:43 PM
There's some serious power coming out of small motors from standard these days. The new Subaru legacy gt will come with a 2.0 direct injected turbo with 225kw and 400nm as well.
Wonder what the next wrx STi will have given that's the case

putting it in perspective 10 years ago a vx ss was giving out 225 kw. crazy power out of a 4

JamesSRiT
14th May 2012, 03:07 PM
Love the sound of this cars specs, and it looks absolutely stunning on the eye!! :D

Saving money f'sure!

ChrisMaz
14th May 2012, 11:03 PM
Little bit off topic. But did anyone else see Opels small announcement on facebook? Three images were attached. I imagine it's going to be the Bi-Turbo diesel for the insignia. Enhanced Turbo for the OPC?

http://a2.sphotos.ak.fbcdn.net/hphotos-ak-ash3/544238_444840175527235_118844698126786_1686924_111 2452623_n.jpg

"Within just twelve months we are launching three completely new gasoline and diesel engines. Less emissions, less fuel consumption, more fun ;)"

poita
14th May 2012, 11:04 PM
Was just about to post this

Shall be interesting

dizzydumb
15th May 2012, 10:01 AM
About time they designed a direct air feed piping. Sick of those little intake nose that bends and reduces in size at the mouth.

lonewolf1983
15th May 2012, 09:39 PM
its going to be a 1.6L direct injection turbo (up to 149kw - hopefully for a corsa), a diesel and a 3cylinder

poita
15th May 2012, 10:18 PM
its going to be a 1.6L direct injection turbo (up to 149kw - hopefully for a corsa), a diesel and a 3cylinder

sauce?

lonewolf1983
15th May 2012, 10:33 PM
http://www.caradvice.com.au/172763/opel-plots-10-point-plan-to-return-to-profitability/

SIMid
16th May 2012, 03:41 PM
sauce?

http://www.thinkgeek.com/images/products/frontsquare/dc05_awesomesauce_hot_sauce.jpg

Sounds impressive ........... I hope OPC looks better in the flesh than the pics.