Manny13

How does the ported head sold on crateenginedepot.com http://(www.crateenginedepot.com/sto...-P333C144.aspx) compare to the work the JBP does? What type of gains can I expect from the the Ecotec perfrmance Head on CED's site. Will I need different internals?

Allshot

I think the gmp one you get 4 hp and the cti has yet to be dynoed. Id think the cti would yield a better gain though

cobalt06ss_sc

i would tend to agree the GMP one is probably just cast with larger ports and combustion chambers while the other is probably portes and the ridges are smoothed out so it decreases turbulance. if the prices are close i think i would probably got the the non GM head. the big thing you want to look at is how many CFM's it flows. the more the better.

Manny13

I've had my cobalt for almost two years now and have done many custom mods but have been conservative until now with performance gains for the sake of waiting to see what is out there. However, I'm beginning to build my engine and want to do everything at once. I currently own all these following products but am holding off to do it as one big eventful install: intake, header,3" downpipe, 3" exhaust, modular pulley system with a 2.7 pulley, 60lb injectors and harness, 2 step colder plugs, adjustable pulley tensioner and CA Heat exchanger on order. I have another 2500 - 3,000 to spend and was considering pistons, ported head, cams, and valve springs but don't know which to get and from where? Please I need advice! My goal is 300 WHP somewhat safely!

Allshot

Get the meth injection. Im waiting for my cobalt addiction h/e also.

Manny13

where is a good place to get my pistons? I'm thinking 10.0:1 and how about cams

Manny13

how much power can our stock head gasket handle?

Allshot

Intense sells the pistons. I know the pistons handle 300 Hp so the gaskets hould surpass those numbers.

Allshot

I dont know if anyone sells cams yet but if they did it would be Jbodyperformance. They wont be cheap though

05sedan

the ss s/c pistons hold more than 300hp....the 2.2 pistons handle that much.....

g5mike

Ditto

StinkBOMB

These engines in these cars are good up to at least 300hp, what you have to watch out for is the drivetrain. Clutches, axles and entire transmissions in some cases.

CbYellowSS

3 things
intense pistons

jpb cams

and jpb head 3 different choices for the head last is about 3k but gives a 14-19 percent gain in hp

patathSS

The headgasket is the weak link in the equation. You need to go to studs and a different headgasket if you want to push that much power.

SS_SC_Cobalt

That head is fully CNC ported, meaning GM made a program and used a computer to open up the ports as much as they could, and CNC is smooth, much better than hand porting unless you are one of those exceptional few that can do better freehand.

Might want to ask Tom if he has a copy of the flow sheet, I have been considering this, but I was hoping for a head that accepts little larger valves

also we have a differnt head than most ecotecs, so I am not sure which one is cnc'd

this is an interesting link for info on the ecotec http://www.tprmag.com/inside/ecotec/powertrain.shtml

NJHK

If you're adding a bunch of boost on top of 10.0:1 compression, you better have good computer management to help prevent knocking. Invest in HP Tuners.

Pistons? Wiseco all the way. Go to www.carcustoms.net, contact karo and he'll set you up.

Cams? jbodyperformance.com should have a set for your motor.

One other thing, you're in Cali, wouldn't this get you in a shitload of trouble emission wise? Just curious.

patathSS

I just realized you were talking about headers and he is talking about heads. BIG difference

glockglade

They have to be more than that the pistons in the 2.2 ecotech are good for around 280whp.

Manny13

i don't have to worry about emissions for the first seven years in cali. Are JBP the only Cams for our cars? I want to try the 10.0:1 compression and go with as small of a pulley that will allow for no engine knock. How about the drivetrain? what needs to be beefed up?

NJHK

Yeah I understand that but cops can still pull you over and make you go for an emissions check and say that parts you have under the hood are illegal...atleast that's what the training video I saw was saying.

Manny13

very true! does anyone think 10.1:1 compression is too high if I do the mods above?

NJHK

If you can get your hands on HP Tuners, it's not bad. Ideally, people try and stay away from being closer to detonation situations, that's why they lower their compression instead of raising it like you are (stock you're at 9.5:1).

Ultimately, it's up to you.