So what do u guys think about swapping the M62 for a M90.. Im sure it would bring an extra 20hp, and with a new cam, chip/pcm, intake&exhaust.. we could be looking at 250HP IMHO

 

I doubt that would work well, the m90 is a very inefficient supercharger, it already pulls quite a bit of hp from the 3800 engine, im not sure the 2.0 can handle it

 

yeah i think it would rob more then its worth

 

i think jeffie is right

 

I'm waiting for someone to turbo it, in addition to the s/c

that would be sweet, put a big ass turbo on it, the blower would make up for lag and give the bottom end/midrange, with the turbo coming in on top.

 

mmmmm.... twin-charging. Very cool.

It would never happen, but wouldn't it OWN ALL if GM made an aftermarket twin-charging sysem?

 

that would be a treat hehe

 

I'm curious to learn more about their intercooling setup. Whether it's more efficient or not, than a bar and fin, it seems like an odd arrangement. If you up the boost, or alter the induction setup, how can you modify the intercooling to keep up? Perhaps I read it wrong.

Anyway, in my opinion, since it's been done to the Ecotec, turboing seems the best route to take. I mean, they managed over 1,000hp out of a 2.0 four cyl. Dayam. I'm quite sure the internals aren't rated to support this much stock, nor are many other components..but I read in an article that GM Performance Parts plans to produce and sell all the necessary components to turn the engine into a racing machine.

If it is, indeed, at a 205hp and 200 torque rate..with the setup, LSD and weight..I'd assume somewhere around 14.7-14.9 in the quarter. The WRX is AWD with 227hp, so I sincerely doubt we'll be seeing their numbers..and even though the SRT-4 is comparible with a 2.4L inline 4, turbo and LSD (FWD), they were making a claimed 215-220 (2003 model), but most I saw were dynoing around 215-222 to the WHEELS. With the 2004 model, having stage I preinstalled, the numbers jumped to around 230hp and 250 torque.

Given all that, I steel feel confident the Cobalt SS will perform very well for its power and drivetrain setup and with the weight ratio of the car. It has an enormous amount of potential with the Ecotec engine. Like I said in another post, perhaps not with the M62 setup...but who knows. I think the aftermarket will pick up quite nicely for this car, considering GM plans on putting it in many of their vehicles, worldwide.

 

another thing you have to look at with the 'rex, as much as I love them, is that they're heavier than the cobalt should be, and while the awd gives good launches and 60' times, it sucks a lot of top end out of the car, and drivetrain loss is disgusting.

as for the engine's potential, GM has it up to 1200, not 1000 hp.

I like my idea of turbosuper charging better, assuming it will be effecient for the LSJ, but I think that most people will go the rout of the supra - remove the s/c and install a good turbo, just likt supra owners remove the twin turbo setup for a single turbo setup(lag can actually be a good thing on a 1/4 track, less traction issues)

 

I did say over 1,000hp. =) I thought it was 1,100..but, hey...1,200 is cool with me too!

 

I agree with you silver.... there will be a certain point (prolly around the 300hp range) where you will NEED to change the supercharger out to a bigger one, a centifugal or a turbo setup in order to get more out of the engines potential. How much the Ecotec can stand without too much internal mods I don't know, but I imagine we will find out when the car is out on the market.

 

2.0L ECOTEC Supercharged Engine
The all-aluminum dual overhead cam, 2.0L ECOTEC Supercharged four-cylinder engine is built off the strengths of the original, naturally aspirated 2.2L ECOTEC engine.
The 2.0L Supercharged engine has a four-valve cylinder head, maintenance-free chain-driven camshafts, counter-rotating balance shafts and an integrated oil cooler.
The Eaton M62 supercharger spins at a low rpm, which improves durability and creates less noise while allowing for plenty of top-end power. Power delivery of the supercharged engine is instantaneous. Maximum boost of the supercharger is 12 psi.
Also included on this engine:
A direct-mount oil cooler.
Oil jets for piston cooling.
Heavy-duty pistons.
Strong connecting rods.
Forged-steel crankshaft.
Large oil sump.
Sodium-filled exhaust valves for improved durability.
A high-strength aluminum cylinder head.

 

Good to know. Thanks Jonel. Sounds like GM is doing this baby right. Can't wait to see these things roll off the showroom floor.

 

In reference to SilverSCSS's post above (which I didn't fully read before but is informative and well articulated, kudos), I am also wondering a lot about the intercooler setup. All I've read so far is that it's an air-to-water setup, which IIRC is advantageous over an air-to-air setup. I'm wondering exactly how much cooling the intercooler does, and more importantly, how much it can be upgraded to make more power. I know changing to a bigger, more efficient intercooler in some cars can really give a power boost, I hope the same will be true of the Cobalt.

 

i highly doubt it will be upgradedable as in how its integrated in to the manifold design. they should have went turbo. lol

 

I don't think the intercooler being built and integrated the way it is had anything to do with it being Supercharged. I think they wanted something small and efficient, vs. a bigger FMIC setup. For their application, I think it was the smart route to go. Probably cheaper too, due to less piping and such. Also..with the m62 draped across the front, as it is, there might not have been the space for it.

Either way...my opinion towards roots blowers has changed somewhat in the past week or two. I've been getting really interested in them. Turbos are EVERYWHERE now...and many attribute that to their claimed superiority over roots blower. But..I like to be different..and I like the idea of on demand (no lag) setups. I know people will argue "If you do a turbo system right, there will be no lag..." that may be true to a point...but, I think I'm going to toy with S/C's first. And like I posted in another thread...I might consider swapping the m62 for an m45..port out the housing, put the m62 internals in (which would allow for the m62 power in a smaller housing, freeing up engine bay space)...and then doing something like a Megasquirt standalone setup, FMIC, water/methanol injection and so on. Oh..and did I mention the m45 would be clutched? Bwahaha.

Either way you look at it..the baby has potential. That's what I like.

 

Good info, I didn't know that. Since they aren't using a front-mounted IC, where is it? I had a quick look at the 2.0L S/C in a Redline, but I didn't notice the intercooler.

 

As it is set up on the car yes. I heard that GM is running tests on the m62 with boosts as high as 20 psi without problems.

I read in an article (on here somewhere I think) that the ECU is opening the bypass valve at that pressure because they had not tested how the engine can handle it at highter rates.

 

The RL has an intercooler. I've heard it's got a small core so in order to get more boost out of the S/C safely, you'll probably have to upgrade the IC as well.