Hey guys,

I heard that the TC has a "small" turbo and would benefit from a larger one. Wouldn't it be better to change the intake, exhaust system, and other things in order to gain power rather than putting more pressure on the motor by using a larger turbo? I'm a total idiot so please do not laugh too hard at my retarded and completely mindless questions. :redx:

Thanks
Jake

Hey guys,

I heard that the TC has a "small" turbo and would benefit from a larger one. Wouldn't it be better to change the intake, exhaust system, and other things in order to gain power rather than putting more pressure on the motor by using a larger turbo? I'm a total idiot so please do not laugh too hard at my retarded and completely mindless questions. :redx:

Thanks
Jake

i would have to agree with that......for now. If parts start coming out for the ss/tc, that could help it support a bigger turbo then i don't see why upgrading is gonna hurt anything

basic rule of turbo cars.... supporting mods first, bigger turbo second. There is no point is slapping a bigger turbo on when the fuel, intake and exhaust cant handle it.

Hey guys,

I heard that the TC has a "small" turbo and would benefit from a larger one. Wouldn't it be better to change the intake, exhaust system, and other things in order to gain power rather than putting more pressure on the motor by using a larger turbo? I'm a total idiot so please do not laugh too hard at my retarded and completely mindless questions. :redx:

Thanks
Jake

You could do it now but it would be a ton of custom work. New manifold, external wastegate, exhaust...save the money and wait about 8 months there should be some good stuff out...if not trade it in for a wrx or something.

besides, its not the size that counts, its how well you work with it.

besides, its not the size that counts, its how well you work with it.

thats small penis talk sir..do you have a small penis? :lol:..jk ..although it kinda is what you would say to someone if you had a small one lol

thats small penis talk sir..do you have a small penis? :lol:..jk ..although it kinda is what you would say to someone if you had a small one lol

x2:lol:

this turbo isnt that bad most Volkswagens upgrade to the ko4 turbo from their ko3 turbos. These things have alot of potential if you check out the tunes that the new mk5 vdubs have youll see the numbers they are putting down. The turbo cobalt will be a beast with a new tune catback and an intake.

i wish it was that easy...my stock would be in the garbage already

08blackbaltSS, my brother and sister-in-law live in Levittown PA. next time I go visit them I'll have to let you know, I've yet to see one of the new SS's in person.

08blackbaltSS, my brother and sister-in-law live in Levittown PA. next time I go visit them I'll have to let you know, I've yet to see one of the new SS's in person.

I have yet to see a superchaged SS in the raleigh/durham area.. I have seen ONE n/a SS...

I know they are around here but they seem as rare as hen's teeth.

Right, as already mentioned a couple of times, no reason to upgrade the turbo until all the other supporting mods are done, specifically better downpipe, free flowing catback exhaust, intake, etc. It'll take a few months for the aftermarket performance sector to catch up, but I suspect there will be a bolt-on turbo upgrade in the near future. But, with a bigger turbo also means better intercooler (probably front mounted if you go with a really big turbo), injectors, bigger better fuel pump, retuned, etc.

basic rule of turbo cars.... supporting mods first, bigger turbo second. There is no point is slapping a bigger turbo on when the fuel, intake and exhaust cant handle it.

best words I've seen yet from someone. The same can be applied to the ss/sc.

basic rule of supercharged cars.... supporting mods first, smaller pullies second. There is no point is slapping a smaller pulley on when the fuel, IAT's, and exhaust cant handle it.

Yeah from what I know the turbocharger that is in the LNF, is a twin scroll KD04 turbocharger, That's made by Borg-Warner that makes the KO4 turbo charger for Audi/VW's... However it's a version of the KO4, but not exactly the same... Problem with the LNF in the Cobalt is how it's mounted for a FWD vehicle may not leave a lot of room for larger turbos... I know for the Solstice/Sky they do offer turbo conversion kits for Mitsu 16g, 20g turbos and Garret GT3067R turbos... however the engine is mounted longitudely in those cars because they are RWD, making more room for a larger turbo, but it just came out so we'll see...

oh, and the whole tpms thing sucks ass. Chalk up another loss for the ss/tc.

oh, and the whole tpms thing sucks ass. Chalk up another loss for the ss/tc.

What do you mean the tire pressure monitors suck? How is this a loss for the SS/TC?

You do realize that it is now law for all new vehicles to come with a TPMS since the Ford/Firestone thing a few years back...

Whether us SS/SC owners want to admit it or not, (I will because I've prefered turbos vs superchargers in smaller engines) The SS/TC is putting out HP #'s and more stock that a Stage 2 SS/SC would have... And hopefully some stage kits do come out in the near future, or by spring of next year, that will be putting the SS/TC @ or over 300hp easily...

Note to all.

a larger turbo does not directly translate into more boost.

the k03 on the cobalt is a specific "-12" variant. its got a wheel that B-W spec'd for gm, for the SIDI motor to be as efficient as a thimble sized turbo can be at 18-21psi.

basically the stock car operates around a 2.0PR thus, finding a larger turbo that generates more air flow at that PR will net a more efficient set up over all, due to a larger compressor wheel being more efficient at that pr then the tiny piece on the stock turbo. but lag will increase a bit as well. the nice thing about jump turbo size early on is that your entire engine system become more efficient, you'll pick up power at the same boost levels (as long as you have the injector needed to support it) and you'll be good for more power as you continue to mod the car.

the k03 on the cobalt is a specific "-12" variant. its got a wheel that B-W spec'd for gm, for the SIDI motor to be as efficient as a thimble sized turbo can be at 18-21psi.

Wait, I read it's a KD04, a variant of the KO4.... I'm confused... At least that's what the Solstice/Sky eqipped LNF's have, and doesn't the Cobalt SS/TC have the same engine???

You are saying it's a KO3...

So is it a KDO4, or a KO3???

Wait, I read it's a KD04, a variant of the KO4.... I'm confused... At least that's what the Solstice/Sky eqipped LNF's have, and doesn't the Cobalt SS/TC have the same engine???

You are saying it's a KO3...

So is it a KDO4, or a KO3???

the "-12" wheel is a k04 variant but the frame isnt.

the turbine is a whole 'nother story.

Oh... Ok Got ya...

i hope everyone still realizes tht the transmission cant handle anymore.....

i hope everyone still realizes tht the transmission cant handle anymore.....

That is not true. Do some reading on what Hahn has done with stock trannies...

i hope everyone still realizes tht the transmission cant handle anymore.....

thats not true... GM underrated there transmissions... seen LSJ with over 430whp and their engine blew before there tranny went

Yeah, the trans isn't as much as a weak point as one may think with other cars... And if GM can do anything right, it's their transmissions... Again this is also the same 5spd from GM Sweden and I'd imagine it could handle over 300hp easily...

i hope everyone still realizes tht the transmission cant handle anymore.....

Care to substantiate your claim?

Care to substantiate your claim?

His only proof would be "I read it in another thread." Which would be true...I read that several times...too bad the people that wrote it had no idea what they were talking about!

Ok, so the best, or more logical option, is to upgrade the intake and exhaust before messing with the turbo. Someone mentioned that going with a larger turbo would require the inner cooler to be mounted in the front of the car. I believe mine is already mounted in front of the radiator. Am I correct on this? (Sorry, I do not know much about turbos yet)

Also, IF GM decides to provide stage kits for this car, wouldn't the stock transmission be made to handle it? I will feel better about gaining more HP if GM announces a stage kit. Hopefully it will mean that they have prepared the other components, the transmission, fuel system, clutch, and cooling system, for the abuse. (Again, I am not confident in this so please correct me if I am wrong.)

That was me that mentioned upgrading to a front mount intercooler with a bigger turbo. I had a senior moment and was thinking Subaru. The point is, there is a lot of upgrades and supporting mods that go with a bigger turbo. Depending on how big a turbo you upgraded to, you might need a better intercooler and maybe even meth/water injection at some point.

The first things I would personally do if you are serious about performance is a Synapse downpipe, Hahn 3" catback exhaust, CAI, and then something like the BSR PPC tuner that Hahn sells (or HPT if they ever figure out the new SS/TC PCM).

i hope everyone still realizes tht the transmission cant handle anymore.....

ok, thats it mr. time out for you

I have yet to see a superchaged SS in the raleigh/durham area.. I have seen ONE n/a SS...

I know they are around here but they seem as rare as hen's teeth.

I was just on vacation for a week in Wilmington NC with my turbo balt haha I guess I have a hen's tooth.

08blackbaltSS, my brother and sister-in-law live in Levittown PA. next time I go visit them I'll have to let you know, I've yet to see one of the new SS's in person.

It will be here give me a shout, I may let ya drive it

His only proof would be "I read it in another thread." Which would be true...I read that several times...too bad the people that wrote it had no idea what they were talking about!

The idea comes from the GM torque rating for the Getrag F35 Transmission. The rating is 259 lb-ft of torque. Certainly conservative for what it can handle, but not conservative for the 100k mile warranty. Regardless of what the transmission can take for a few years, I sincerely doubt it could handle the power levels Hahn is running for a full 10 years 100k miles with the way most people drive. You have to be mindful of the transmission when running huge HP, cant just bang through the gears.

The first things I would personally do if you are serious about performance is a Synapse downpipe, Hahn 3" catback exhaust, CAI,

QFT. Although Hahn will be coming out with a 3" downpipe in the near future. Im going to wait for his so the entire turbo-back system matches. The order I am going to do the upgrades is:
Cat back, downpipe or CAI (whichever comes first), intercooler, tune, charge piping, turbo. Do all the supporting mods first, then upgrade the turbo.

I was just on vacation for a week in Wilmington NC with my turbo balt haha I guess I have a hen's tooth.
To be fair, Wilmington is on the coast, Raleigh/Durham is about 3.5 hours away from there ;).

Haha I was a little closer on my way back, I-40 to 95. Actually I-40 is where I had a bit of an encounter with a sr20 swapped 240...this encounter is what really impressed me about my new car haha.

not to burst anyone's bubble on the transmission issue, but ive got to disagree on the comment, "if gm can do anything right, its their transmissions.", in an SS, this may seem true, but check out the LS tranny....lol, very light duty and will break, ask any LS owner thats pushed their 2.2 to the limit, they ll tell you the tranny went really quick. lol

Well that's what you get for having a 2.2L Cobalt LS... :lol:

I'm not saying that all of their trans are perfect, but if you look at GM's trans for their trucks, cars, vans, SUV's etc for the most part the trans is the last thing to go...

My other question is how do you beat on a 2.2L Cobalt LS???

Well that's what you get for having a 2.2L Cobalt LS... :lol:

I'm not saying that all of their trans are perfect, but if you look at GM's trans for their trucks, cars, vans, SUV's etc for the most part the trans is the last thing to go...

My other question is how do you beat on a 2.2L Cobalt LS???

The question should be WHY would you beat on a 2.2L cobalt LS???