How much boost can the 2.0L supercharged cobalt engine can take ???

 

as much as you're willing to build it for.

 

A engine isn't measured by how much boost pressure it can withstand but rather how much stress it can withstand.

 

I will answer your question in a simple way unlike these other dudes lol (sorry kev and adam lol)

16-18 safely....I run 20-22 and have no problems...but thats when you start to blow haed gaskets around 22-24 lbs

My amigo paul (missedmatchfaces) is running 23lbs on a turbo but upgraded his head gasket...

 

well it's just a very vague question. are we talking stock? or in general? or slightly built? highly built?

 

I'm assuming he means stock because it's obvious that an engine can hold a lot of boost when built right. The 2.1 ecotecs are holding 50-55 lbs of boost no problem lol

 

Just stock. i wanted to change up the injectors and supercharger pulley for more HP

 

safest way to do that is get the stage 2 kit from gm. it includes bigger injectors, shorter belt, smaller pulley and pcm reflash, putting you around 240 wheel hp. if you want more, go with a 2.9" pulley, then start upgrading the exaust (header, downpie and cat back), cold air intake and then some cooling mods, im sure you will be more than happy

 

psi is irrelivant.
cfm is the issue.

23 psi out of a t-25 is not the same as 23 from a m62, or 23 from a 35r.

why?
cfm.

kbai

 

funny answer but true!

 

i bought my 2006 chevy cobalt SS with 37,000 miles on it and , i was readin up on my car it say it haves (12 pounds of boost ) stock . now when im drive it and im on the high way the boost guage is on the 5 psi mark ,not on the 12psi dose anyone know whats up with that , the only thing i can think of is that these people put a bigger supercharger pulley on it for some reason but i just want 2 know if anyone eles had the same problem or if theres just a problem with my supercharger .dose anyone ?? thanks

 

you have to be wot to get full boost right?

 

You'll notice it higher in lower gears while under heavy throttle. 2nd and 3rd ive seen mine hit 10lbs.

 

Shooo... top of 2nd I've seen mine hit ~17lbs, maybe a hair more.

 

Wow that completely flew over my head lol. Area is right

 

PSI is a measure of restriction not power. Like the man said cfm is where its at.