Ive been wondering why you people picked the 2.4 over the 2.0 ss s/c. Price? or is it for the Hahn Turbo and what type of gains are we looking at here? with a CAI, exhaust, header <--HA, etc? I saw on a show that with a turbo the car had 250 HP and it could whip A s/c one. Is that true?

 

for me it was (in this order: insurance, price, automatic, and something better on gas for commuting to college, but still a decent kick.

 

2.4 turbo... that says it all for me plus auto is nice for around here.

 

even though i dont have the 2.4, i do have the 2.2 and when the turbo comes out for it i will, hopefully, have a really fast car.

 

the 2.4 is a more advanced motor, all new design around the block, stronger internals and designed for Turbocharging. Will be able to take 350WHP in the auto with only adding a trany cooler and engine mounts (maybe in the stage kits when they come out).

Where the 2.0 is just a 2.2 downgraded to be able to handle the blower, no real internal changes and anything over 250WHP the clutch does not hold up very well.

 

I agree with eveyone above..Plus I don't like 2 doors...(no offence to anyone) I am also waiting for the turbo kit to come out.

 

I wanted an lt. I bought the ss because I couldn't find an lt 2 door with fog lights in my area.

 

It wasn't "downgraded" it was destoked to rev faster. All new eco's i believe use the same block. And it does have different internals, infact better. All forged for the 2.0, oil squirters, etc you can look up the rest if your really interested. The 2.4 was not made for boost its just a very advanced and strong motor for being NA, def not built for boost, thats what the 2.0 is for. 350whp will not last long at all on a stock internal 2.4.

 

The reason why I got the 2.4SS is cuz I wanted automatic, wanting to hear a BOV. the stock 2.4 internals are the same as the 2.0S/C except the compression ratio, I'd be worried about the rest of the drivetrain.

This is my plan:
1. turbo kit 250WHP w/oil, and tranny cooler
2. upgrade transmission, LSD, and hi-stall torque converter
3. upgrade turbo system 350whp oh yeah!!!

 

4 Doors, Automatic, and something not yet mentioned, I like the FE3 suspension over the FE5 in the SS/SC. I think it's a better compromise for the street, a good combination of ride and handling. If I wanted to get back into autocrossing, I might want the FE5.

 

I agree. I just came from a n/a eclipse that was turbo'ed it was fun for a while but you do still get raped on the gas.Also 350 is probably going to be at the crank more theres going to be alot of drive train loss in the autos/fwd you also wont be able to control what gear you are in so having a turbo charged auto with lots of power wont matter anyways unless you could keep up with alot of people in 2nd gear/3rd gear. mine was an auto (eclipse) and i was laying down 245 i think to the front wheels but when it came auto vs manual still got raped by some v6 cars cause of the gear ratios. going from that to a cobalt ss/sc was alot more fun autos just dont have that much work you have to do to get them running. Plus you dont get laughed at when someone asks you if thats a stick or an auto.

 

For those of us who don't need oodles of power, the 2.4 is the way to go. Honestly, I could have even done without the 17" wheels and the slightly stiffer suspension. But the 2.4 isn't an option on the lower models.

 

well insurance to begin with...and thn price...everything i looked at failed the insurance test.... till i got to this one...

 

Are you for real? The 2.4 is a good motor but its not passed down from the hand of God. The car was built for N/A power, that's why it has higher compression and the vvt.

Like said before, the 2.0 has forged internals and lower compression and is designed for boost. The clutch doesn't hold stock whp for some people. But then again my clutch is holding over 250whp fine.

 

^^^^ thats pretty funny. You need to do some research before making statements about the LSJ 2.0. The engine was completely designed with boost in mind. Its built in Germany and basically the same engine Saab uses for their turbo 9'3.
The clutch is still bigger than the 2.2 and 2.4 engines but I guess still has issues (mine is still holding up great after 10,000 miles.
Ive driven the 2.4 ss and 2.0 ss/sc and I feel the 2.0 has a huge power advantage. The trans and shifter is also better in the 2.0 ss/sc.

 

your deffinetly unstable, I wonder who told u all that....... and you believed it.

 

350whp? Bye Bye rods, piston, and crank.

Edit for clarification: LE5 uses the stronger Gen2 series block. However they do not have stronger internals. The 2.0 is a destroked motor by way of the crankshaft, to reduce reciprocating(sp?) mass and have forged connecting rods. Pretty real internal changes.

 

lol i like how that comment unstable made got all the ss/sc ers intereted in this thread....to a point he is right.....and then again our engines have all the proof they need as far as power cpabilities thanks to our 2.4 solstice brother...sure we dont kno what the long term effects of this amount of power will be but we do know that it can hndle it stock for a point...and also the 2.0 isnt passed down from the hand of god either...it has its weaknesses....its a debored/destroked version of the 2.2---which in my opinion might be beter for power with justa few internal mods......and come on guys we all kno compression doesnt afect how much boost an engine can handle....its just all that compression our 2.4 is dishin out can actually be a good thing cuz it would take us less boost to mae the same amount of power as a 2.0 would.............so in short just get the **** along every engine has its strengths and wakneses get over it u crybabies.....well see who is god when we find out some extnsive testing info of the turbo on a 2.4 engine........

 

i do believe our crankshaft is forged jut like the 2.0.....only thing is you all got forged pistons /rods.....andthat wont be hard to fix...thats just a minor mod fo a ne world of LE5 power

 

dude hopefully everyone in here doesn't forget about the one key thing about modding... The transmission.... For example, I originally swapped my Turbo Ecotec into my car with my 4-speed auto, and it ran for about a week before i tore the internals in the tranny apart...

You gotta realize that modding these cars (especially autos) to those kinda power outputs will easily fry the 4T-45E tranny you have in that Cobalt.. (BTW thats the same tranny i had... it's only made to handle maybe about 225ft-lbs before it self destructs)

 

LE5 cranks are not forged, they are cast. LSJ pistons are not forged they are cast as well, with a larger piston pin, good for about 300hp compared to the 2.2/2.4 250hp rating.

Edit: LE5 connecting rods are forged steel like the LSJ, the L61 is the one that has forged powder metal for connecting rods. Refer to http://media.gm.com/us/powertrain/en...g%20trans.html for info on GMs engines.

 

A few came to point out misinformation in this thread.

Boost>Compression as far as making power.

 

there is somethin in our engine that is forged i cant rem what rem. readin bout it.....and i dunno how u cansay boost is greater than compression when they both work together to either make or break boost....the higher compression the lower the bost needed to make the same amount of power....ask anyone who knows something about boost and youl find this out....reliability MIGHT become a problem but that problem has yet to be discovered.....

 

Assuming that is correct, when you rebuild an engine and plan on putting boost to it, why wouldnt everyone just put higher comp. pistons in. We don't, you always lower the compression ratio if future plans include running boost. I believe a mod here lowered his comp. ratio on his 2.2 anticipating a turbo kit. Add the fact that higher compression causes knock so unless you're using race gas all the time, you're retarding spark, which in turn reduces HP.

Edit: Halfcent mentions that he reduced compression so he can run more boost when the time comes for a turbo. https://www.cobaltss.net/forums/2-2l-l61-performance-tech-45/2-2-guys-how-much-hp-u-pushing-26093/

 

oh i agree with this... my 2.0 liter B205 Ecotec was once hooked to my cars old 4T-45E four speed auto... and i found it very annoying because from a stop i always got killed because of turbo lag, and any roll under 30mph resulted in much slower cars jumping ahead and leaving me to try and play catch up which was still harder than it is now because of the wide ratios in that automatic....Of course it only ran for three days until one day I made a sharp turn to catch up to a Mustang GT, kicked down into first and suddenly heard a bunch of grinding (a noise similar to some nails thrown in a blender)...

haha, my "service vehicle soon" light came on and that was it