GM begins testing turbo four-cylinder engine in large cars

[Mr. Wyndham]

Originally Posted by Geno

OK guys, I may be wrong on this but I am thinking that the 2.0, 260hp turbo is only rated at 22 mpg highway in the little light Solstice. I would not be happy with that at all. Looks like the same rating on the Saturn Sky.

I don't know where you read those numbers...
But according to here:
http://www.pontiac.com/solstice/inde...yle=&year=2008
(And click "Features & Specs")

The Turbo 2.0L ECOTEC is actually rated at a higher EPA estimate than the 2.4L ECOTEC.

2.4L:
-auto (19/24)
-stick (19/25)

2.0L:
-auto (19/26)
-stick (19/28)

[Grape Ape]

Originally Posted by Dragoneye

I don't know where you read those numbers...
But according to here:
http://www.pontiac.com/solstice/inde...yle=&year=2008
(And click "Features & Specs")

The Turbo 2.0L ECOTEC is actually rated at a higher EPA estimate than the 2.4L ECOTEC.

2.4L:
-auto (19/24)
-stick (19/25)

2.0L:
-auto (19/26)
-stick (19/28)

And the same 2.0 gets 22/30 in the 3000# 08 Cobalt SS.

I think that if it ended up in a Zeta, two things would happen:

A. It would only be for regions where there is a stiff tax based on engine displacement (China & Europe).

B. It would be tuned for less power and better mileage.

[The_Blur]

Originally Posted by Grape Ape

And the same 2.0 gets 22/30 in the 3000# 08 Cobalt SS.

I think that if it ended up in a Zeta, two things would happen:

A. It would only be for regions where there is a stiff tax based on engine displacement (China & Europe).

B. It would be tuned for less power and better mileage.

I disagree with your second assertion. The Camaro will weigh more than the car that uses it now. It would need more power to make up for the difference in weight.

[Grape Ape]

Originally Posted by The_Blur

I disagree with your second assertion. The Camaro will weigh more than the car that uses it now. It would need more power to make up for the difference in weight.

I think the role changes. In the Cobalt, HHR and Kappa twins it is the faster optional engine. If used in a Zeta it would probably be a or near base engine targeted at those more interested in economy than power. A V8 or turbo 6 would presumably also be offered.

[Supermans]

Next thing you know in a few years we will be discussing a 1 cylinder camaro in the works and then a few years later a total hybrid camaro. This is a good sign with the 4cyl if it keeps Camaro alive, however I guess this means they might end up getting rid of the 6 cylinder in a few years and keep the 8.. I would hope they would never get rid of the 8 cylinder as that would make every single person on this forum extremely upset and I doubt GM wants to lose this crowd by lowering their high performance model to a 6 cyl only as Nissan has, no matter how fast the engine is..

[LS9CamaroSS]

Originally Posted by radz282003

I agree with this post regarding FI'ing small displacement engines in the future. It's my understanding the smaller the bore the better/cleaner the burn, hence lower emissions and higher efficiency. If you could cram more air and fuel into a smaller engine and get the same power, why not? I'm a big fan of V8s, and plan on getting a V8 model, however I don't think options like these in these cars would be bad at all. They do well in the cars posted above so that's something to keep in mind too.

As far as the GT-R, I'm not sure that any numbers we've gotten from Nissan are any good from the 'Ring. From the articles I've been reading and posts I've found here and there, the astounding times that that car has been claimed to have have been on an over-boosted engine (compared to the tune that's supposed to be in the production model) and also run on shaved race tires. I know I haven't read every article on the car, but the last one in one of the big rags' was still really positive in it's favor. Yeah, yeah, it's AWD, but hey, it uses it to it's fullest and who can argue that's a bad thing?

Dude this car WHIPPED the snot out of a comparable Corvette... what are you talking about? If you ask me the GT-R should be the BENCHMARK for all sports cars at the moment. If Toyota brings back a Supra expect the GT-R to have a damn good competitor back on the streets... You have to remember that this car is making a whole hell of a lot more power than what it is rated at... and that is per C&D and the rest of the mags that have tested it...

[Splicerguy]

Does Gm have a CVT? I was just thinking that the turbo 4 with a CVT might just give the Camaro both great acceleration and great fuel economy.

[theholycow]

I don't think a CVT that can handle 3600-4000 pounds exists yet.

[Splicerguy]

The Nissan Murano has a CVT with the 3.5 V6 and it weighs 4030 lbs. according to KBB. In a recent auto mag comparison, the Murano was both the fastest and most fuel efficient in the group. A CVT would theoretically be the best transmission for a turbo motor, it keeps the motor on full boost while accelerating. If you could add 3 or 4 mpg to the turbo 4's already good fuel economy, it would help offset the V8.

[lil_red_v6]

plz dont put it in the camaro

[theholycow]

Originally Posted by Splicerguy

The Nissan Murano has a CVT with the 3.5 V6 and it weighs 4030 lbs. according to KBB.

Cool, you learn something new every day!

In a recent auto mag comparison, the Murano was both the fastest and most fuel efficient in the group. A CVT would theoretically be the best transmission for a turbo motor, it keeps the motor on full boost while accelerating.

Well said. If they do put the turbo 4 in the Camaro, the CVT should go in with it -- and that should probably be the only configuration with the CVT.

[LS9CamaroSS]

can someone educate me on what CVT is?

[theholycow]

A CVT is a Continuously Variable Transmission. Instead of having gears, it smoothly adjusts the gear ratio.
http://en.wikipedia.org/wiki/Continu...e_transmission

[LS9CamaroSS]

Originally Posted by theholycow

A CVT is a Continuously Variable Transmission. Instead of having gears, it smoothly adjusts the gear ratio.
http://en.wikipedia.org/wiki/Continu...e_transmission

Being a Manual tranny fan i hate this idea then... give me real gears none of this 4wheeler gas it and go crap...