DaREDss

its a otherwise stock car other then the swap its a real base tune put a full exhaust and a nasty tune it would be near 400 on less boost. I love my car but superchargers suck for it, there is a turbo balt at 15psi with exhaust and thats it 405 hp, Also its our small displacement. The same company made a kit for the 2.4l n/a using the same supercharger that come on the stock ss/sc and made 225whp on 8psi with another base tune.

DaREDss

also whoever said the engine was shaking bad at high rpm's thats the dumbass driving bouncing it off the rev limiter

DaREDss

trust me a lot of us balt guys are confused as to the use of a smaller blower but w/e, the trubo is the way to go with these better hp more efficiency and safer

Redglow360

never heard of a turbo being safer, they always seem to be eating clutches and auto trans.

blownbalt

turbo is safer because we have a lot of heat issue with our supercharger, our 2.0 also doesnt have variable valve timing like the 2.4 ecotec, all us cobalt guys know were lacking in the power department, however our engines can take massive amounts of boost safely, so with turbos were good to go

DaREDss

lets put it this way a turbo with same boost im at right now would run 20 degrees cooler and have 30 mmore hp

K20A2

Sounds like shit to me.

B20.eg

i dont know exactly what charger you guys have. but i have a roots Eaton M62. and in the manuals describing the testing of the product it says, "with the m-62; from the rotors turning at 4,000 rpm to 14,000 rpm, the charger only increases inlet charge temps by 10'F." i know that charge temps also depend alot on the size of the charger as well.

B20.eg

so i found my answer:
The Cobalt SS Supercharged Coupe features a Ecotec 2.0-liter supercharged four-cylinder engine and five-speed manual transmission. The engine includes an Eaton M62 helical roots-type supercharger and features an air-to-water intercooler to reduce the temperature of air entering the engine. The supercharger produces a maximum boost pressure of 12 pounds per square inch (psi).
So you guys have the same type of charger as i do. only difference is, i will run 7-8 psi to get to 300 and you guys are pumping 12 to make 225-230. thats why your inlet temps are high. i'll be cooling the temps with 520cc injectors.

Sneakin Deacon

how about i put it this way, i could put a turbo on your car, run the same boost your at now, and you'd run 50° hotter intake temps, and lose 30hp.

i understand where you are thinking youre coming from, but youre incorrect. there are a vast number of contributing factors. basically it comes down to building a car around a certain setup...in this case, even though the cobalt is lacking in static compression, it could exceed in dynamic compression, and run more timing aswell. netting the same hp, at the same pressure, with the same blower yet less static compression.



as for a turbo being safer or harder on an engine, that is purely based on the (in)competency of the person picking out the turbo. you're not going to put a single T25 onto a LS1...and your not going to put a PT76GTQ onto a b16