some interesting power numbers coming from the Stage 2 kit...

[my_bd]

was reading thru this article about the Cobalt SS/SC Time Attack vehicles
http://www.gmperformancedivision.com...g_stories.aspx

this snippet here:
The engine features an Eaton M-62 Gen 5 Hybrid supercharger, and delivers 283 horsepower at 6840 rpm and 243 lb.-ft. of torque at 4200 rpm without the nitrous. It is also Stage 2+ equipped, using a smaller pulley than the Stage 2 kit available soon through GM Performance Parts to achieve even greater torque.

nice numbers from the stage 2 kit (note: without nitrous) and some mystery size pulley....

I'm thinking it is feasible that we may see similar numbers from our engines with a bit of tweaking after the kit is installed......
GM's factory tune for the Stage 2 kit will probably be very conservative and rich once again.

[mailmars]

Originally Posted by my_bd

was reading thru this article about the Cobalt SS/SC Time Attack vehicles
http://www.gmperformancedivision.com...g_stories.aspx

this snippet here:
The engine features an Eaton M-62 Gen 5 Hybrid supercharger, and delivers 283 horsepower at 6840 rpm and 243 lb.-ft. of torque at 4200 rpm without the nitrous. It is also Stage 2+ equipped, using a smaller pulley than the Stage 2 kit available soon through GM Performance Parts to achieve even greater torque.

nice numbers from the stage 2 kit (note: without nitrous) and some mystery size pulley....

I'm thinking it is feasible that we may see similar numbers from our engines with a bit of tweaking after the kit is installed......
GM's factory tune for the Stage 2 kit will probably be very conservative and rich once again.

OK guys.. There is a reason that GM canceled stage 3. They could not meet durability above 265. So you can beef this puppy to 280+ but be for warned, I here snap crackle and pop and it ain't the cereal...


Mark

[AlphaJaguar5]

This engine will last a long time. Its the clutch and other components that are not meant to take the abuse. The engine can handle a WHOLE lot more but we beef up the clutch and a couple of other things (axles) we gonna be more than fine.

[manticus]

Wasn't there a GM Build book that stated that the rods on the existing 2.0 ecotec would not handle more than 250hp? I think there might be some internals that may have to be swapped out before they achieve higher performance numbers - prove me wrong

Ian

[AlphaJaguar5]

that build book was for the 2.2 ecotec

next...

[Watts-Up]

Originally Posted by manticus

Wasn't there a GM Build book that stated that the rods on the existing 2.0 ecotec would not handle more than 250hp? I think there might be some internals that may have to be swapped out before they achieve higher performance numbers - prove me wrong

Ian

I've heard the # was 350 to 400 whp before you have to start upgrading the internals. I believe I remember the valve springs can't handle any more. Of course I can't prove anything as mine's still stock, but twincharged has been running probably over 400 hp for a while now, and we havn't heard of him breaking anything yet. I'm not 100% sure his is stock internals, but I do believe so.

[Nukem]

hmmmm I am sure the engine should be ok up to 300, R they sure those numbers are not overrated for stage 2. heck stage 1 has yet to be released

[crazybrew609]

Originally Posted by Watts-Up

I've heard the # was 350 to 400 whp before you have to start upgrading the internals. I believe I remember the valve springs can't handle any more. Of course I can't prove anything as mine's still stock, but twincharged has been running probably over 400 hp for a while now, and we havn't heard of him breaking anything yet. I'm not 100% sure his is stock internals, but I do believe so.

400!!!!!!!!.. yea if he has added a 100 shot of nos... he's getting at most 300whp.. unless he's gotten it tuned out he may hit 325.. thats as high as it's gunna go tho

[my_bd]

how to build a 300hp Ecotec 2.0l supercharged engine
http://www.gmperformancedivision.com.../23/ecotec.pdf
http://www.gmperformancedivision.com...tec_Part_2.pdf
http://www.gmperformancedivision.com...tec_Part_3.pdf
http://www.gmperformancedivision.com...tec_Part_4.pdf

aftermarket upgrades include:
- high-flow fuel injectors
- forged aluminum pistons
- higher spring-rate valve springs
- more aggressive camshafts
- new calibration and controller

[Sp00ner]

You do NOT need pistons for 300 hp. My guess, is I'm pushing 260 crank right now... Schizzo is pushing well into the 270's with the Non-LSJ motor and pistons. I really don't think they're as precariously on edge as people make it. Would I push 30psi and 500 hp on them? No. Twincharged is also pushing well over 300 at the crank.