To begin, do not turn this into a "not worth the money" or "L61 < LSJ" thread, or ill simply delete the thread.

I'd like to get my 05 2.2 up to 200WHP...while staying away from Nitrous, Blower, or Turbo.

Currently have:

Intake
Header/DP
GMPP Touring
Trifecta tune
Motor/tranny mounts

I've got Stage 1 comp cams on the way, and I'm planning to do the 2.4L manifold swap as well.


On top of all of that, what else would I need in order to reach 200?

I'm considering the new mrz underdrive pulley, or maybe just the lighter oem replacement...would this help at all?

What else? Any and all suggestions welcomed!

 

pistons

 

yes lighter pulleys will help. not a huge difference but they're worth it. get higher compression pistons and stronger sleeves. if youre not afraid of taking about the motor.

 

honestly u could ummm.. sell it all and buy an ss...

but on a serious note.. ull have to build it more then likely.... or at least bump up the compression and run sum race gas...

 

take out your engine, replace with bigger engine.

heres what you would need to do IF you wanted to do this
INSANE compression sumting like 14:1 (jk)
cyro'd block
ported head
rods/pistons/headgasket/studs sleeves
stroker kit
ported intake manifold
race gas
entire valvetrain upgrade
injectors
custom tuning
oh
but you wont have any traction so
new tires
and new axles to handle the new tires
and then a new clutch

hmm... probably like 15,000 dollars

 

if you're going to stay NA ( or just add nitrous)

you can run 11.5:1 pistons some rods to take it .. cams ported head full bolt ons and a tune and you have a chance.. you're going to need run stg2 cams though stg 1's aren't going to be wild enough for you

^^^ basically what he said.. however you're not going to need a cryo'd block and the race gas part you probably wont be running all the time so i wouldn't factor that in...

a slight over bore would help too

axles wouldn't be necessary either.. full mounts and some good tires would be good

 

ummm yeah im pretty sure thats a little more work than whats needed to get to 200whp.

 

yea just a bit not to mention that shouldn't cost 15k

 

well hes trying to gain 60 horses at the wheel (thats generous i think some say 130/131 is stock numbers)
https://www.cobaltss.net/forums/show...ht=dyno+thread (my refrence)

thats ~45% more hp

i dont understand why op doesnt want to go to a power adder. If its because he thinks hes sacrificing drive ability/reliability. i think he needs a new N/a goal.

lol im cranky since its late, not much tolerance for people.

oh and 15k was me exaggerating. but i think its realistic that this will cost more than any turbo kit out there. at least ~5k

 

im not sure why you wanna go N/A?? it would be cheaper to get 200whp with a 3k turbo kit.

 

exactly. OP can you please explain your logic to us? Then we can help you find the right application for your personal power goals.

 

cuz a turbo will be plenty reliable if thats what you are worried about.

maybe even more reliable than you N/A build

 

def. more reliable. your gonna have to have some wild f'in cams to get 200 whp
plus have fun w/ knock control when you boost compression

 

It's just something I'd like to do...some people want to use power adders, I'm interested in keeping it all motor. No particular logic behind it, I simply don't want to go the F/I route.

It will likely cost me slightly more then a turbo kit..but I wouldn't imagine anymore then 1-2K more.

 

Well if you really wanna do the NA build do a lot of what greased said. Look into those things and you can get there

 

N/A power comes from revs...first and foremost will be upgrading the engine / valvetrain to handle at least 8000 safely...maybe 9k tops. Cams to shift the powerband to the upper reaches of your rev range...supporting mods to hold it all together...ported head, anything remove the airflow restrictions.

Honda S2K engine should make a good blueprint. Research what's on those. Or what people sink into built H22 engines. Then find the American version.

Edit: Or make one of these. I'm pretty sure it makes over 200whp n/a

https://www.cobaltss.net/forums/drag-racing-52/ok-i-guess-now-ss-116534/

 

Definately gonna need some nice high compression pistons.
Definately rods
Definately a ported head
Bigger injectors for sure
Better intake manifold for sure
New tires will also be a given... unless you just like to sit and spin
Tune

If you do all the work yourself you are probably looking at $5500 +/- $1000. And these are just the bare minimum things and even then you would be pushing it to get to 200whp. In all reality you would also need to upgrade the suspension to keep it safe at higher speeds as well. To run enough timing to actually hit 200whp you will probably need to use 100+ octane gas as well.

So pretty much I agree with greased. If you want it to be really reliable you will need pretty much everything on his list. I think his figure maybe a little high, but you are probably still looking at almost $10K if you want the car to be reliable at 200whp.

 

Bolt Ons:
Intake...$200
Exhaust...$450
Header/DP...$500
2.4 Intake Manifold...$250
Underdrive/lightweight crank pulley...$200
Total: $1,600

Engine Work:
STG II cams...$400
Fully built head (port, 1mm over size valves, valve springs/retainers, etc.)...$2500
11.0:1 pistons in a .040" overbore...$400
new rods for these pistons...$400
Neutral Balance Shafts...$400
Underdrive/lightweight crank pulley...$200
New headgasket and head studs...$250
Motor/Tranny Mounts...$300
Custom Tune...$300
Total: $5,100

Overall Total: $6,700

Those are your necessities...
Then you can go into parts that arent necessary but will help at a track

STGII Axles...$??
Drag Radials...$??
Clutch...$??

Mind you, these totals are not including labor, so you better do your own work. However, in your defense, this will probably end up being more of a 250hp car

 

u listed pulleys twice.. lol

 

For a large engine, you can work at increasing the HP by increasing the torque produced. You can do this because most large engines are not very efficent per ci at producing torque. Smaller engines on the other hand produce a whole lot of torque per ci so you have to look at some other way.

If you want to ignore FI and Juice, your only option is revs. Lots and lots and lots of revs.

 

.....riiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiight

 

this seems like your most logical options. your biggest gains will come from the pistons and the head but you need to really do your research. IMO all motor cars are twice as technical to build than FI.
I think it would be pretty sweet to see some carbs on a custom intake myself. just remember anything is possible with enough time....and money

 

wait is this 200bhp, or 200whp, you will def need to tear the engine apart, raise compression, cams, stroker kit, run it on race gas when u want the full 200whp...etc...everyone is steering you in the right direction

 

250 horses... really? youd need a new block.

 

all that estimated money ....buy a faster car