NWAE Cobalt

iTrader: (1)

to run on stock psi?? no...to run on the stock setup they give you its just "plug and play" lol install and your set, if you want to up the psi, then yes...you must start replacing parts...

Cobalt4Life

if your using the standard hahn tune with 8psi then no. if your gonna up the boost and get near 300hp which from what i read can damange the rods, and pistons, somewhere around 300 and up..

i have been thinking the same as you cobaltdriver..

I have been looking at getting crower rods and diamnond or wiesco pistons in a lower compression.

if you go to crowers page you can get forged or billet rods.. they also have package deals for crankshaft, rods, and pistons from wiesco as well..

id love to get the whole package as just in case for the future. billet rods can handle 700hp from what crowler says.. forged i believe i are 500hp.. forged should be plenty

Eagle also makes rods and crankshafts. It comes down to preference

cobaltdriver07

how much more boost can the garret kit get up to

Cobalt4Life

well from looking at the disc potato turbo they have it says about 350hp, i dont no what boost level that would be cause i believe it goes every 1 boost=10hp

so if at 8psi hits us at 200hp 300hp would be 16psi.. thats if your not counting new 3 inch catback and all.. just a rounded figure or so...

so 350 would be in the 21psi.. if your going to hit that change out rods and pistons quick lol..

bc3tech

*looks* you're in WA? good. that way when you hit your limiters on the public roads i know it won't be my ass getting put 6ft under. can only hope you don't take some innocents with you.
um... at 283hp the rods go boom. GM did it. all 4. at the same time. right thru the block. this was on n2o, granted, but if you hit 300 on boost and don't have forged rods.... well... you're an idiot. personally i'd be replacing the rods if i was around 250 just cuz temperature changes could yield a 1-2psi boost spike and there goes your engine.

Cobalt4Life

ok cool thanks for clarrifying that, thats why i said near 300 they should be replaced, i left the gap open..

I wrote in another thread about the rods snapping.. that is why though i said near 300, was waiting for someone else to chime in on my opinion.. i wont be pusing my turbo past 210 until i forge ****..

through the block?? crap..

bc3tech

"However, as the Ecotec pushed through 283 hp at 4400 rpm, all four connecting rods simultaneously failed catastrophically and smashed through the side of the block. Laboratory analysis subsequently revealed a mid-beam compression fracture on all four stock powder-metal rods."

Cobalt4Life

i understood everything up to laboratory lol

cobalt4life translation??

the 4 rods cracked in the middle when compressing the air??

Sw4y1313

There was no compression. it was nitrous. The power level was just WAY to much for the rods, causing them to crush and snap in half. They were then thrown threw the block.

shortyhend2004

Thats not always true, it all depends on how efficiant the turbo is and how it makes boost.



Also 8lbs may be "safe" but there is no guarantees when you turbo a n/a car. So all you people wanting turbos keep some money for repairs. Clutches cant handle much over 250 and who knows bout the tranny it self. That part well, clutch and tranny depends on driver really.

Cobalt4Life

i def agree, it depends hugely on the driver, what was it hahn said about having the manual tranny near 400 and up hp??

my boost comparison was just a rounded number.. i have said in another thread that once the turbo is in, that i wanted to change rods and pistons. lower the compression.. i dont have to worry about the clutch as i am auto, i know the torque convertor can get really hot.. i have to get a tranny cooler also..

I meant compression as the piston moving up, sorry sw4 i wrote it wrong lol.. sometimes i cant explain to well..

I got a question, how much boost or hp till i have to change parts of the valve train?? would 310hp require some changes in the valve train??

I no from the build book the auto can take 325lb on the gearbox, which i wont hit that most likely, depends on what i decide down the road.. i no there is another auto tranny i could throw in the car if something happens, i forget the name.. its the performance tranny, ugg cant remember..

I am calling crower when i want there forged rods, if you look on there site, they got both billet and forged for our car, but the forged would be enough..

i will either get wiesco or diamond pistons.. 8.9.1 pistons..

shortyhend2004

Good link for those of you who dont have this.....
http://tunersource.gmblogs.com/Racer...nce-build-book

-2.2 rods not reccomended for use over 250hp
-pistons tested close to 300hp but reccomend change at 250hp
-intake mani. tested to 350hp range
-valve springs only allow up to 7500rpm
-stock cams good to 400hp
-head with production valves ran to 500hp on gas with 24lbs of boost


out of the build book read it if you havent!!!!!!

umrdyldo

iTrader: (1)

so upper the Rev limiter won't do much unless we get cams to help the powerband or is there still enough power to justify staying in the higher RPMS? I'm just kinda wondering if we would see gains at the track with just bolt ons and a 2.4 manifold. Seems like it wouldn't kill us if the limiter was at 6800 or 7000.

Halfcent

People, you are getting grossly ahead of yourselves. Focus on the problem at hand, that being the ability to flash the E16a computer in the aftermarket. If this simple hurdle can be jumped, the rest is cake.

FASTL61

not true.all you have to do is lower the compression and put the lsj rods in it and a good head gasket and youll be good.in the ecotec performance book it states the stock l61 crank is good for 550 hp and cams are good to 450hp!just lower the comp. with good rods and head gasket and you can hit some really good boost numbers!

tonio5555

True, but we all want 10,000k rev limiters, 300mph spped governors, and quad turbos!

NWAE Cobalt

iTrader: (1)

right....that is replacing parts

Cobalt4Life

After taking another look at the build book.. before i have the turbo, crower will be getting a call for a package deal they have. you can get forged or billet rods, and wiesco pistons for a discount package.. only need forged rods though

EDIT: Halfcent, Vince was told about the PE delay by tom, I asked him today

409Cobalt07

did he say anything about it, whether he thinks he can do anything about it or is it too soon to say?

Halfcent

Unless you are planning on making over 600 HP, the crower rods are a waste. Have you actually done any shopping yet? Those rods are over a thousand dollars. The Eagle rod set can be had for under 400.

And I agree, I have yet to hear about any progress on the PE issue.

Enuff_Said

any word on time or pc software??

Cobalt4Life

crower makes both billet and forged, its on there site halfcent, the crowers the 694.99 which isnt cheap lol and yea the eagles are 329.99.. The reason i was going to go with crower is because of there package deals on rods and pistons, and they sell it both in forged. If it isnt cheaper id just go with eagle rods and wiesco 8.9 pistons.. The limit of forged rods is 500hp right??

I do not know the status on PE delay, Tom told me as a update as i havent been in contact with Vince i the past few days.
I will keep pushing hard for the software tune as that really seems to be everyones main interest over the GT tuner.

Co|3aLt $$

I spoke to Vince last night, he said the shop has been SUPER busy. they apparently got a boat load of work in in the past few days, and he's been trying to keep up.

Cobalt4Life

oo ok.. I no Tom goes to his shop this weekend to hook the tuner to his car to get the numbers out of it and what not, then the tuning will be started and soon followed by dyno on either that day or later on..

he thinks its busy now, wait till tuning is done, he will have cobalts in the area fludding him lol

Co|3aLt $$

lol that's what I said... he said something to this effect "yeah, but that 2.4 guy, he's really getting all my attention, he's the one I'm really worried about."





hahahahahahahaa j/p j/p - seriously tho.... 2.4 love, show it.