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SilverCSS

I don't know if I agree that the M90 has more potential in this case. It has more potential to provide power to a larger engine, but honestly, I don't think with a 2.0 it'll do the engine justice.

Let's review some information. First, the m62:

http://www.capa.com.au/eaton_mp62_4th.htm

Now, the m90:

http://www.capa.com.au/eaton_mp90_4th.htm

As you can see, in this case, the m62 is being used within the specifications (size of motor) it was designed to operate in/on, 2.0-4.0 liters. The m90 was built and designed for a car/truck of 3.0-5.7 liters.

Even though the m62 on the Cobalt SS might be a 5th gen (not sure if it is), you can see from the 3rd to 4th generations, the efficiency type/rating didn't change. The technology simply improved some.

Personally, I'm not a fan of roots type blowers, unless on the old school, push rod V8's (with the hood scoops :mrgreen I still feel a single turbo setup, or twin charger setup would be best...and if I went the twin charger route, I'd use a Vortech centrifugal S/C. But, like Jonel said, we'll find out soon enough once people start tuning.

zstyle

Exactly.

I can't wait until people start to build on this engine. I really hope that the aftermarket support will be there for it, and that it will respond well to mods (being an ecotec i think that it will). I'd like to make 250-300 hp an eat SRT-4's without having to shell out too much dough. That would be sweet 8) .

SenenCito

I really like the cobalt SS it has a lot of promise, but just don't expect to beat srt-4s regularly, not only are they faster stock, but also with minimal mods they gain power like crazy. Buddy owns a stage 2 2004 srt-4, you should see how that thing pulls

zstyle

I totally understand your point. I like the SRT-4, and I have nothing against their owners, in fact if the Cobalt wasn't coming I would probably be shopping them. I'm just tired of people **cough**j-body.org**cough** slamming the Cobalt and exalting the SRT-4. Around here there isn't too many modded sirts, so a modded Cobalt would probably beat a large percentage of them. And once you leave a straight line, the cars are pretty close stock for stock, judging the the Redline's performance. It would be a driver's race.

SenenCito

oh agreed, there is no doubt that the cobalt is going to have potential and its going to be a great car, part of the reason why I am looking at it over the srt-4 is because its more refined..the other part is my gm discounts :P hopefully I can get it pretty cheap

zstyle

Haha, I know what you mean about the GM discounts! I graduate University this year, and I'll get employee discounts and GM Card points. Add to that the fact the Cobalt SS S/C is cheaper then the SRT-4 (by quite a bit) in Canada, and I should come out pretty good.

SilverCSS

Actually, I disagree here. Once the aftermarket steps up for the Ecotec platform, I think it will, or at least could, be a regular thing. I've driven a mostly stock SRT-4 (Exhaust and intake)...it was a LOT slower than ************** lead you to believe. Not saying they aren't cheap and easily modified, but...have you looked at the stack of warranty/repair work papers lately? Plus, I still have yet to hear of an SRT-4 engine being built to over 1,200hp like the Ecotec, or breaking speed records.

And like you said, I feel the SS is much more refined than a stock SRT-4.

zstyle

Exactly. I think that the Cobalt is probably aimed at a slightly of a higher aged and higher income demographic then the SRT-4 as it comes with alot more options and refinement. Of course then the spoiler should be optional... but we'll see where chevy goes with it.

SilverCSS

So...here's a bit of information that might put things into perspective. It's not an exact transfer (as far as numbers and potential), but it'll provide some basis of understanding.

On the Probe Talk forums, we now have a clutched (MAD MAX BABY) m45 kit for sale for our cars. So, an m45, which is smaller than the m62 obviously, but on a bigger engine. 2.5L V6. We haven't seen any dyno numbers yet on the kit..but people have run the m45 in the past on the cars..just designed their own setup from scratch. The estimated numbers, @6psi are around 250-270 WHP. If you turned it up to about 12psi, 350whp is the estimate (based off other cars with similar setups).

Yes, the engine is a bit bigger...and has two more cylinders..but, really, not that much more displacement (.5). If an m45 can provide plenty of power to this kind of engine, think of the potential the m62 has. I'm actually thinking about buying this m45 clutched kit for my Probe in the future, then porting out the m45 housing to drop in the m62 internals. That way, I can keep a smaller housing in the engine bay and retain the clutch system. I will DEFINITELY be looking into a similar setup with my Cobalt SS in the future.

Ok...done blabbering. Hopefully this gives you an idea of what we're working with here. Maybe some Saturn tuner with a RL could come on here and post some real numbers.

zstyle

Wow. That's like a 100hp increase over stock!! How high is the compression ratio on those engines? Of course if the compression ratio is high turning the boost up to 12PSI might not be an option without serious building, but I see your point. If the M62 can be modified to produce more boost (w/out overheating itself) I'm sure the Ecotec (even with 9.5:1 CR) would be able to handle it and make alot more power then it does now. Great idea, as I've said before, it's gonna be awesome when these first come out and we can watch every one build more and more power into them.

SilverCSS

9.2:1 is the stock compression of the KLDE. It's quite the engine. Rumor has it, the engine began with Porsche and was initially meant to be turboed. Then it went from Porsche to Mazda..Mazda completed the design, made it N/A..skimped in a few areas, then dropped it into the Probe/MX6 platform. They respond really well to mods..especially n2o and FI setups. There was a dude running 13.5 with 196whp. Awesome driver, yes...but that's an insane time. This is partly due to their lighter weight (MX6 is ~2600 or so..Probe is ~2700). - But, yes..as I keep saying..potential is there. That's the biggest factor for me. Companies tend to underestimate the true HP/TQ numbers, as we've seen on many occasions. I'm not going to underestimate this platform...not from what I've read/seen online.