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| 08-09 SS Turbocharged General Discussion Discuss the 2008 - 2009 Chevy Cobalt SS Turbocharged. On sale since the second quarter of 2008. |
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06-24-2008, 01:35 PM
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#1 |
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Senior Member
Join Date: 03-26-08
Location: Somewhere, MI
Member #: 24430
Posts: 2,559
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Reverse?
So we all know that the supercharged engines need the intake bypass valve so they work in reverse. Otherwise the supercharger would just suck all the air out of the cylinder. So knowing that, how does the turbocharged version work in reverse? The engine is trying to suck air backwards, yet the turbo wants to spin forward so I don't see how it works. Is there some sort of exhausting intake bypass valve on the turbo version? Also, if it does have the valve, does that also mean that it can make boost in reverse? Like how much boost? Like 5 psi or does it go over 20?
Can anyone help me sort this out?
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08 Cobalt SS/TC - Red
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06-24-2008, 01:43 PM
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#2 | |
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New Member
Join Date: 10-17-07
Location: Rochester, New York
Member #: 20729
Posts: 15
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Quote:
 because if you are that is the funnest thing I have hear in a long time! 
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'08 SS/TC Black with low pro spoiler (g85 and sunroof)
K&N panel filter, Triple Gauge (Auto meter Digital Proshift,Oil Pressure), Proggess Rear sway bar, Gen #3 head lights, 6000k Hid kit. '06 Chevy Cobalt SS (Traded) Eibach Prokit, Proggess Rear sway bar, Poly Motor mounts, Triple Gauge (Auto meter Digital Proshift,Oil Pressure), Gen #3 head lights, 6000k Hid kit, K&N filter |
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06-24-2008, 01:45 PM
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Blown no more....
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yeah man.... Reverse dosent mean the engine works in reverse. I am completely at a loss for words right now.
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2008 Cobalt LS
1999 Honda CB750 (For Sale) |
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06-24-2008, 01:45 PM
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#4 | |
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Hey you in the bushes...
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Quote:
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 Mods: ZZP 2.7 pulley, NKG 1 step colder plugs, 60 pound fuel injectors, Injen CAI, Corsa touring exhaust, ZZP header/dp combo, Tuned By Matt at Tune Time, Dynoed 270whp 230tq without exhaust |
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06-24-2008, 01:46 PM
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#5 |
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Senior Member
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I'm pretty sure that is what he is trying to say.
Epic thread for sure!
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 "I swear to God there’s not enough rope in this country to properly deal with stupid Democrats." Last edited by invisible; 06-24-2008 at 01:47 PM. Reason: Automerged Doublepost |
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06-24-2008, 01:47 PM
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#6 |
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Junior Member
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I can help... Never touch a wrench!
When you go in reverse, your engine does not reverse rotation, nor does the supercharger, and i don't even know how it would be possible for the engine to reverse the rotation of the turbo. When you go into reverse the transmission is in a different gear which enables you to move the car backwards. And the bypass valve, has nothing to do with reverse. It is when the throttle body closes, the compressor(whatever it maybe i.e. supercharger or turbo) still compresses air, yet since the throttle body is closed it has no where to go. So instead of having all that air pressure build and mess up your TB or blow something up, the bypass valve allows the air out of the intake track and puts it before the compressor so it can be reused. www.howstuffworks.com That is a really good website for understanding the extreme basics of how stuff on cars works. Read it, it will help so you don't have god knows how many people yell at you for making stupid posts. |
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06-24-2008, 01:49 PM
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#8 |
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Beautiful disaster
Join Date: 03-22-07
Location: Weather forecast for tonight: dark. Continued dark overnight, with widely scattered light by morning
Member #: 15036
Posts: 21,706
Images: 22
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hi. im here for the comedy
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Stop banning members for their choice to support certain shops.
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06-24-2008, 01:50 PM
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#9 |
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Hey you in the bushes...
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__________________
Mods: ZZP 2.7 pulley, NKG 1 step colder plugs, 60 pound fuel injectors, Injen CAI, Corsa touring exhaust, ZZP header/dp combo, Tuned By Matt at Tune Time, Dynoed 270whp 230tq without exhaust |
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06-24-2008, 01:51 PM
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#10 |
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Senior Member
Join Date: 06-13-07
Location: Woodbridge, ON
Member #: 17431
Posts: 1,164
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o my goodness... there must be a misunderstanding
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2005 SS/SC Performance Mods: 2.8/60lbs; Meth Inj; Zex 50 Wet; K&N Intake; KSports; Hurst STS; Pacesetter Header; Dual Interceptors; LC-1 Wideband; HP Tuners Pro Edition... Appearance Mods: CLICK HERE FOR PICTURES Oh Yeah, I Also Have This   |
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06-24-2008, 01:52 PM
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#11 |
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Senior Member
Join Date: 04-08-07
Location: Louisville, KY
Member #: 15469
Posts: 926
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another question, why are u concerned about how much boost you get in reverse? you going to race a car in reverse??
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"The only time you will hear me whine is when I pass you"
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06-24-2008, 01:52 PM
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#12 |
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Wheel Stealer
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umm im going to help you out bro. its just your tranny that spins in a diff. direction, if the engine were to stop and start spinning the other way, trust me, you'd know, haha.
OP, please clarify the first post. IBTL!!!
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06-24-2008, 01:54 PM
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#15 |
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Senior Member
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This could be the the most epic thread ever......
That would mean the exhaust becomes the intake...
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"I swear to God there’s not enough rope in this country to properly deal with stupid Democrats." Last edited by invisible; 06-24-2008 at 01:54 PM. Reason: Automerged Doublepost |
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06-24-2008, 01:55 PM
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#16 |
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Senior Member
Join Date: 01-02-08
Location: Metro Detroit, Mi
Member #: 22395
Posts: 1,524
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yeah, engine doesn't go in reverse. Just your trans...
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06-24-2008, 01:55 PM
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#17 |
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Premium Member
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click...
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