NGalaxyTimmyo

iTrader: (1)

I'm hopeing to do that build book as well. I think I'm gonna be following your posts closely for a little while. When do you expect to tear apart your block?

CobaltSS313

Is the cam you bought the same one that is on gravana's site or is it different

Bad06SS

iTrader: (1)

No need to double check, that information has been out for a long time. Get yourself a GM build book, and it'll tell you what parts the 2.2 and the 2.0 ecotec have. With the exception of pistons and valve springs, we're good untill ~600hp according to GM.

NightmareRacing

what about billet still cams?

I love billet cams, they are way stronger than cast, and you can run more spring pressure... but I'm kinda new at this 4 slamer tech...sooo...billet?

victory_red_SS

iTrader: (2)

I am going to tune the PCM anyways and the build took the redline to 7850rpm's.
And yes the plan is to build for 8,000rpm's.
These are not the same as the Gravana ones. These ones are considerably more aggressive. Likely won't pass emissions but I will just move to a part of the province where I won't need to be tested
I am going to do as much as possible with pics and dyno's. As for how to's it will be more like how done's as I am getting pro's to do the work.
I am still waiting for some parts to arrive and as soon as they are confirmed as shipped I will definitley start a thread to chart the progress.
I to am new to these 4 cylinder engines and I chose Comp Cams simply because GM considered them worthy to be used in the 300+hp build.

On another note, this build is being done with a built in option to be able to drop in either the twincharged turbo or nitrious(least preferred) setup. I may even have a shop willing to do the build so their expertise can be showcased on the LSJ which will also benifit them with Cobalt\Red Line owners. I hope to get confirmation one way or another in the next 24hrs.
Either way the next few weeks are going to be hard getting to sleep, sort of like when I was originally waiting for my car. This is going to be a sweet ride

Blown 4-banger

DAMN WHAT THE HELL DO YOU PLAN TO DO WITH THIS RACE/street MOTOR?!?! Are you shooting for 400 whp?

*EDIT also are stock LSJ pistons forged? They better be, that would be dumb on chevys part.

Gory

Might want to invest in some cutom Ferrea hollow stem valves.
The nice thing about the hollow stem is it makes the vales lighter and increases your RPM capability
and get the springs and retainers that gm sugests
400whp @8000 RPM corvete eater

victory_red_SS

iTrader: (2)

Yes I am shooting for 400hp and I only want to do everything once.(well until I wear it out that is ) Adding a turbo later won't be invasive.
As for the LSJ pistons no they are not forged which is why I bought the Diamond ones.

And can you imagine the look on the vette's face as his baby brother kicks his ass

CobaltSS313

If the cam you have is not the one on gravana which cam on comp cams website is the one that is on gravana's site, or is the one on gravana's a completely different cam altogether? Sorry if this is confusing. Also if you take the redline up to 8K is there anyway you can pass inspection cause im looking to seriously mod my engine, id like to get 400whp but i still has to pass inspection.

victory_red_SS

iTrader: (2)

Passing will all depend on your PCM tuning as well as your state regulations. I may likely not pass but where I live I just have to move away from major cities where there are no required tests after the initial 7 year exemption for testing.
The Gravana Comp Cams are only good to 7,000 rpm's where as the ones I am going with are good to 8,000. And considering the deal I worked out today I need the higher rpm's

Jmc007

Dammit you ordered the Stage 2 head, than the stage 3, now the stage 4 ?

victory_red_SS

iTrader: (2)

Oh so you noticed that. The stage 4 is an unadvertise head that is for crazy people with exotic plans for their Ecotec's. I am also going to be getting some other extra tweaks done once my engine is torn down.

WopOnTour

Warning! None of these COMPcams will fit the 2.0L (*they removed the 2.0 in their NEW PRODUCT catalog)
They are for the 2.2 with the shorter exhaust cam and wont fit- BTDT!
You need to call COMPcams in order to get a custom grind for the 2.0L with the longer exhaust cam for the cam sensor drive.
HTH
WopOnTour

Blown 4-banger

OMG Chevy is the biggest bunch of dumbasses on earth! Why the **** would put forged... EVERYTHING except the most important part! I can't believe this ****! I'm gettin those diamond pistons just to have a set a reliable pistons, I hate cast pistons and don't trust them even as a daily driver piston, I'v seen too many shattered cast pistons, what the hell were they thinking!?!?!? Especially while running 12.5 psi of boost! Im parkin my car til i get those diamonds, I also like the 10:1 comp ratio.

ok my rant is over, please return to normal conversation

WopOnTour

LOL
They seem to be holding up pretty well so far! - all the way to 22 psi!!
Hanvt seen an engine failure directly attributed to piston collapse yet- maybe other have?? (most I've seen have been valvetrain "trickle down" wrecks) and many of those due improper valve keeper or rocker assembly after upgrades
But to ignore upgrading them on a 400HP build up would be silly of course
Wop

Blown 4-banger

doesn't matter, I HATE HATE HATE cast pistons more than... ps... j... POOP!!! My friend had cast pistons in his 350 chevy, and suffered catastrophic falure due to piston shatter or collapse and ended up leaving two rods and hundreds of chunks of pistons on the highway. And he was just cruising, not even racing or speeding!

Tofu

Lookin real good! I'm interested to see if my predictions about the LSJ liking the bump in compression turns out to be true.

SS_Supercharged

I talked to Diamond and they offer 2 Compressions Ratio Pistons for the LSJ engine. Stock Compression ratio 9.5:1 and higher compression ratio 10.0:1. I checked and in the cars GM built for land speed records had 10.0:1 pistons and the Time Attack car had 9.5:1 the pistons.

SS_Supercharged

GM used the production rods in the Time Attack car and the Land Speed record cars. My source says the LSJ production rods are good to over 400 hp.

victory_red_SS

iTrader: (2)

I just talked to Comp and yes, Wop is again right. Those cams will not work for our\my car(s). They gave me some hooey that they work in some 2.0 and I said "yea right"
I then asked how long to do a cutom grind and he said 1-2 days. He then adds they would then be sent to have the nittro coating done with a turn around time of 6-8 weeks
He said that even though they did the cams for the 300+ build they thought the 2.2 ones would work. So I say screw Comp. I will now go with the JBP Tri-flow, seeing as JBP will be doing major things to the engine anyways.
Way to go Comp Cams