Using Junkyard Coupe Supercharger on 2.2L Sedan - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 9 (permalink) Old 03-27-2018, 07:04 PM Thread Starter
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Using Junkyard Coupe Supercharger on 2.2L Sedan

I've found several posts here about people adding superchargers or turbochargers to their 2.2L Cobalt. I want to add a little extra hp (about 50 hp, or a 30% increase), but as a college student funds are limited.
If I found a supercharger from the supercharged coupe SS Cobalt at a junkyard, could I Jerry-rig it onto my 2005 2.2L? (provided I purchase any necessary gaskets, tubing, etc) Or are there complications which make this ridiculously impractical?

I'm an engineering student so if I need to run calculations concerning airflow, energy, heat, etc that's fine by me. I also have access to a machine shop if I need to modify parts to make this work. Just trying to get my 145hp engine to about 200.

P.S. If there's already a thread on this that I missed lmk so I can delete this one and not clutter the forum.
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post #2 of 9 (permalink) Old 03-27-2018, 10:41 PM
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It all bolts right on, only thing is there's no tuning support for the 05 so you would need a standalone system
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post #3 of 9 (permalink) Old 03-28-2018, 05:09 AM
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Yeah, the supercharger swap is definitely easy to do, and relatively affordable. There is a list of parts you'll need that I've pasted below. However, as Ryan has said, '05 will require special tuning, as nobody tunes these.

https://www.yourcobalt.com/forums/eng...2-2-2-4-a.html
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1986 Chevrolet Camaro IROC-Z - Wrecked/Sold
1998 Chevrolet Cavalier - Wrecked/Donated
2007 Chevrolet Cobalt LT - M62 Supercharger, Ported Throttle Body, 42 lb/hr Injectors, Intense 2.9" Pulley, Cobra Heat Exchanger, SS/TC Exhaust, TTR Engine and Trans Mounts, Trifecta Tune, ZZP Header and Downpipe, '08+ FE5 Struts/Shocks, SSC Springs, FE5 Control Arms, SS/SC Front Swaybar, Powell Hardcore Rear Swaybar, 18" MSR 045s, Dunlop ZIIs, Nightshaded Tails/Side Markers, Shorty Antenna, Black Bowties, Black Grilles, Black Headlights, Dual JL 12" w1v2 Subs, A/D/S Front/Rear Speakers, Pioneer 7" Touchscreen, G85 Recaros, Leather Rear Seats, 160 MPH Cluster.
2014 Chevrolet Cruze Diesel - 17" MSR 013s, Black Bowties, UR Rear Lower Bar
1981 Chevrolet Camaro Z28 - JVC Ribbon Tweeters, SEAS Mids, Pyle Woofers, Kenwood Tape Deck, Zapco Amp/Equilizer, Ceramic-Coated Longtubes, 2.5" Pypes Stainless Exhaust, Bilstein B6 Shocks, GW U/L Control Arms, Hotchkis Springs Sway Bars, DD HDX Cluster
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post #4 of 9 (permalink) Old 03-28-2018, 05:09 PM Thread Starter
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Quote:
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Yeah, the supercharger swap is definitely easy to do, and relatively affordable. There is a list of parts you'll need that I've pasted below. However, as Ryan has said, '05 will require special tuning, as nobody tunes these.

https://www.yourcobalt.com/forums/eng...2-2-2-4-a.html
Cool I had seen that list earlier but didn't realize those parts were swapped out of the 2.0 cobalt. It's a pretty great list, so props to you. I noticed you listed exhaust parts as "optional," but a friend said that if I didn't upgrade my exhaust 1st I would destroy my engine because the additional boost pressure would not be able to exit the pistons easily enough. Is there any truth to this, or could I wait on the exhaust upgrades until after I saved a bit more cash?

---------- Post added at 04:09 PM ---------- Previous post was at 04:04 PM ----------

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It all bolts right on, only thing is there's no tuning support for the 05 so you would need a standalone system
If I mounted the MAF sensor at a location where the pipe diameter matched the OEM diameter so it can get an accurate mass-flow calculation, and if I located it at such a place that about the same amount of head-loss occurred between the sensor and throttle body in the new setup as the old, would the readings be accurate enough that I could get by without a tune? Or am I just asking for my cylinders to be shred to pieces?

2005 Chevy Cobalt sedan 2.2L
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post #5 of 9 (permalink) Old 03-28-2018, 05:34 PM
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Quote:
Originally Posted by William MCD View Post
I noticed you listed exhaust parts as "optional," but a friend said that if I didn't upgrade my exhaust 1st I would destroy my engine because the additional boost pressure would not be able to exit the pistons easily enough. Is there any truth to this, or could I wait on the exhaust upgrades until after I saved a bit more cash?
Any truth? Not even remotely.

I ran an entire stock exhaust - manifold, downpipe and exhaust system for probably a year or so before I upgraded to an SS/TC exhaust. Then about another year later I added the header and downpipe to complete the system.

So you absolutely can wait on that if you'd like.
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1986 Chevrolet Camaro IROC-Z - Wrecked/Sold
1998 Chevrolet Cavalier - Wrecked/Donated
2007 Chevrolet Cobalt LT - M62 Supercharger, Ported Throttle Body, 42 lb/hr Injectors, Intense 2.9" Pulley, Cobra Heat Exchanger, SS/TC Exhaust, TTR Engine and Trans Mounts, Trifecta Tune, ZZP Header and Downpipe, '08+ FE5 Struts/Shocks, SSC Springs, FE5 Control Arms, SS/SC Front Swaybar, Powell Hardcore Rear Swaybar, 18" MSR 045s, Dunlop ZIIs, Nightshaded Tails/Side Markers, Shorty Antenna, Black Bowties, Black Grilles, Black Headlights, Dual JL 12" w1v2 Subs, A/D/S Front/Rear Speakers, Pioneer 7" Touchscreen, G85 Recaros, Leather Rear Seats, 160 MPH Cluster.
2014 Chevrolet Cruze Diesel - 17" MSR 013s, Black Bowties, UR Rear Lower Bar
1981 Chevrolet Camaro Z28 - JVC Ribbon Tweeters, SEAS Mids, Pyle Woofers, Kenwood Tape Deck, Zapco Amp/Equilizer, Ceramic-Coated Longtubes, 2.5" Pypes Stainless Exhaust, Bilstein B6 Shocks, GW U/L Control Arms, Hotchkis Springs Sway Bars, DD HDX Cluster
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post #6 of 9 (permalink) Old 03-28-2018, 05:56 PM
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Quote:
Originally Posted by William MCD View Post
Cool I had seen that list earlier but didn't realize those parts were swapped out of the 2.0 cobalt. It's a pretty great list, so props to you. I noticed you listed exhaust parts as "optional," but a friend said that if I didn't upgrade my exhaust 1st I would destroy my engine because the additional boost pressure would not be able to exit the pistons easily enough. Is there any truth to this, or could I wait on the exhaust upgrades until after I saved a bit more cash?

---------- Post added at 04:09 PM ---------- Previous post was at 04:04 PM ----------



If I mounted the MAF sensor at a location where the pipe diameter matched the OEM diameter so it can get an accurate mass-flow calculation, and if I located it at such a place that about the same amount of head-loss occurred between the sensor and throttle body in the new setup as the old, would the readings be accurate enough that I could get by without a tune? Or am I just asking for my cylinders to be shred to pieces?
If it would even run, it wouldn't hold up very long if you supercharge it without a tune
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post #7 of 9 (permalink) Old 03-28-2018, 06:11 PM
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Yeah - it would dump so much extra fuel into the cylinders, you'd wash the bore walls down and dilute the oil - which leads to boom.

1986 Chevrolet Camaro IROC-Z - Wrecked/Sold
1998 Chevrolet Cavalier - Wrecked/Donated
2007 Chevrolet Cobalt LT - M62 Supercharger, Ported Throttle Body, 42 lb/hr Injectors, Intense 2.9" Pulley, Cobra Heat Exchanger, SS/TC Exhaust, TTR Engine and Trans Mounts, Trifecta Tune, ZZP Header and Downpipe, '08+ FE5 Struts/Shocks, SSC Springs, FE5 Control Arms, SS/SC Front Swaybar, Powell Hardcore Rear Swaybar, 18" MSR 045s, Dunlop ZIIs, Nightshaded Tails/Side Markers, Shorty Antenna, Black Bowties, Black Grilles, Black Headlights, Dual JL 12" w1v2 Subs, A/D/S Front/Rear Speakers, Pioneer 7" Touchscreen, G85 Recaros, Leather Rear Seats, 160 MPH Cluster.
2014 Chevrolet Cruze Diesel - 17" MSR 013s, Black Bowties, UR Rear Lower Bar
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post #8 of 9 (permalink) Old 03-28-2018, 06:59 PM Thread Starter
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Quote:
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Yeah - it would dump so much extra fuel into the cylinders, you'd wash the bore walls down and dilute the oil - which leads to boom.
Quote:
Originally Posted by rrob5382 View Post
If it would even run, it wouldn't hold up very long if you supercharge it without a tune
What if I installed a variable fuel pressure regulator to mechanically restrict the fuel to the proper amount? Between that and strategically manipulating placement of the MAF sensor, it seems like you could find a balance but I've never had the privilege of viewing the ECU's code to know for sure how the calculations work.

2005 Chevy Cobalt sedan 2.2L
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post #9 of 9 (permalink) Old 03-29-2018, 07:50 PM
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If you restricted flow, then you wouldn't have sufficient fuel flow for when you ran into boost.
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1986 Chevrolet Camaro IROC-Z - Wrecked/Sold
1998 Chevrolet Cavalier - Wrecked/Donated
2007 Chevrolet Cobalt LT - M62 Supercharger, Ported Throttle Body, 42 lb/hr Injectors, Intense 2.9" Pulley, Cobra Heat Exchanger, SS/TC Exhaust, TTR Engine and Trans Mounts, Trifecta Tune, ZZP Header and Downpipe, '08+ FE5 Struts/Shocks, SSC Springs, FE5 Control Arms, SS/SC Front Swaybar, Powell Hardcore Rear Swaybar, 18" MSR 045s, Dunlop ZIIs, Nightshaded Tails/Side Markers, Shorty Antenna, Black Bowties, Black Grilles, Black Headlights, Dual JL 12" w1v2 Subs, A/D/S Front/Rear Speakers, Pioneer 7" Touchscreen, G85 Recaros, Leather Rear Seats, 160 MPH Cluster.
2014 Chevrolet Cruze Diesel - 17" MSR 013s, Black Bowties, UR Rear Lower Bar
1981 Chevrolet Camaro Z28 - JVC Ribbon Tweeters, SEAS Mids, Pyle Woofers, Kenwood Tape Deck, Zapco Amp/Equilizer, Ceramic-Coated Longtubes, 2.5" Pypes Stainless Exhaust, Bilstein B6 Shocks, GW U/L Control Arms, Hotchkis Springs Sway Bars, DD HDX Cluster
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