tru2nrtt777

iTrader: (1)

I am looking at building a N/A 2.2 capable of about 220 crank hp, I already have a small mods list and would perfer some experienced builders advice.

So far on my list(some already done some still waiting on the paper):
Mod............................................... .Approx gain compounded
Full exhaust(high flow cat).................15hp
CAI............................................... ..10hp
JBP stage 3 cams.............................23hp

What are some things I could do to bump that up? I dont want to run 93 since around here some stations only have 91. I am hoping to(at the most) run 89. I have heard more compression but I really have no experience in that field.

XM15

Well, if you go with higher compression, you need to go with higher octane. Thats why GM recommends higher octane for the 2.4 than the 2.2.

You could probably bump the compression up another half point to 10.5:1 and run 89. The 2.4 is 10.4:1.


Also, you could build the valvetrain so you could raise the rev limit up much higher. That coupled with the appropriate cam would give you a really good boost in power.

Sw4y1313

Exactly my thoughts as well. You shouldnt have a problem running 11:1 on 91 but i see you do not want to run that. Which is kinda lame because if you want power, dont limit yourself because you dont want to buy a certain octane fuel. That should not be whats holding you back from modding.

A great addition to your list would be a lighter flywheel and neutral balance shafts. Free up some weight on the engine, it should free up a good amount of power. You may not want to go with Stage 3 cams tho because there isnt tuning tested with them yet. Start with stage 1 or 2 and test out tuning using a piggyback. See if you can use them to their fullest then if you can, sell the stage 2's and go with stage 3 if you really want, but I dont see them working right without a standalone. You could easily make 200whp NA if you could up the rev limit, stage 1 cams, higher compression, neutral shafts, lighter flywheel and a decent tune.

tru2nrtt777

iTrader: (1)

No flywheel, flexplate

Once again, I wouldnt mind higher octain if I could reliably find it around this shithole.

rossin21

aem fic to tune it with

brandon2.2

machined head and 2.4L intake manifold,

and bored throttle body

laserblue2006

220 isnt really feasible with out high compression is it???

also can you get 25hp from an exhaust and intake???

montecarloman

Well if your shooting that high with N/A might get a new head. Higher flow #'s with CNC porting does wonders, and you can get the head milled to bump the compression. Its very possible to run 11/1 compression with proper tuning which brings us to the heart of the matter. At the moment the only things avaliable are piggy back units. They work just fine but have rudimentary control. There is a company doing a beta test right now on 2.2 tuning but a final product may not be avaliable for quite sometime. The stage 3 cams are a bit much IMO. With the factory rev limiter in place the engine stops spinning at 6500 rpms? I havent seen thoughs cams but I can assume that they are going to make power real high in the rpm range. Maybe outside of the factory rev limit which is another factor to think about.

tru2nrtt777

iTrader: (1)

I have gone to 7k before, i am an auto and was in low gear, it seems on my car the limit is at 7250 and in low gear it is roughly 72 miles per hour.

XM15

So, for a high rev setup and without regard for price, I would say:

Intake and full exhaust (duh )
Ported TB
2.4 Intake manifold
Stage 1 or 2 Patriot Performance Head w/valvetrain
Higher Compression Pistons
Stage 2 cams
Piggyback

tru2nrtt777

iTrader: (1)

Now you see I like your style. :P

levelzero

Listed in order of simplest to hardest:

CAI
Exhaust
Cams (the stage threes will be fine, but they are not anywhere near the claimed gains)
Balance shaft delete
Ported Head (upgraded valve train is a good idea for higher revs)
11:1 pistons (might as well do the rods while you are in there)
Tuning

HunterKiller89

iTrader: (1)

72mph is my redline in 2nd gear at 6500rpm....your not revving to 7250rpm

Cobalt4Life

wouldnt meth be able to help him with high compression to up the octaine count?? that way he could run 85 and be near about 100 octaine??

From what AIS said it would help even with NA

HunterKiller89

iTrader: (1)

it can, but under heavier part throttle conditions (throttle position 50%-90%), you would probably still knock. You wouldnt be giving enough gas for your meth to run, but still be pushing enough power on a low octane fuel with high compression pistons to detonate.

Cobalt4Life

they do have the adjustable ones though, the progressive controller.. let me send the link to AIS..

AIS

We can use our progressive controller and flip the switch to run it in MAF mode and not boost.We could then set start and full points based off of the mass air output signal. Very easy to do.

A 50/50 mix would give a Cobalt NA application all the octane he needed. He could then run lower grade 85 or 87 octane.

Let me know if you have any other questions.

DebadgedBALT77

ahh noo. your not gonna be getting 25 hp from an intake and exhaust.

Id say with a really decent comp. ratio of about 11:1 maybe a tad higher you could get your 220 hp mark.

id go:
intake,
2.4 mani
valve train
High comp. pistons
rods if you want. not really nessacary
header, downpipe, exhaust.
lighter flywheel. im not sure if you auto/ manual?
and a really good tune

im confident that, that list would sit you damn lose to 200 or alittle above.

tru2nrtt777

iTrader: (1)

Well then my rpm guage is off, it hit well past redline and slightly past 7k(hence me saying it seemed like around 7250). That was while I was at the dragstrip and didnt think I needed to upshift... I found out by hitting the limiter.