Hey guys anyone know is our block made out of the same stuff a ss/sc or tc is. I would like to know how much our block would hold boost wise before it would need sleeved. I see guys running 15 pounds on stock ss/sc internals so does that mean if i changed out my rods and pistons my bottom end would handle that much boost? Pretty sure i'm going with the hahn kit next year and i'm just trying to get idea cuz i wanna do it right first.

 

your gonna get flamed for this question.
boost holding capability has too many variables to be answered correctly. supercharger, turbo, intercooling, fuel, tune, are just a few variables to each setup. sleeving isn't the solution, pistons cracking is more of the problem. sc,tc have run much more than 15psi reliably. with the right equipment you could run 15psi with your setup right now.
id suggest you get yourself a goal... actually a few goals. what is your hp goal, what is your 1/4 goal. what do you wanna spend. what your gonna do with the car.
then take those numbers and ask how do you obtain those results on here and you will get great knowledgeable answers. and id also suggest to look at it as how much can i get out of the least amount of boost rather than how much i can stuff in the engine

 

i know there are more than variables then just the block but i wasn't sure if the 2.4 block would hold as much power as the 2.0 block. I guess what i'm getting to is do i want to build a 2.4 or 2.0 i don't want to buy all the internals and then the block go on me.

 

the block is VERY solid. You will be able to make well over 400+ whp stock block. You have to watch those pistons though.

 

ok, thanks thats all i was looking for was if i changed out the rods and pistons would i be set for the bottom end, i've read plenty about guys running that much on the 2.4's but reliability is also a major part of what i'm looking for

 

what kind of pistons can you get anyway?

 

Look at the vendor forums. The GM performance build book recommends getting eagle pistons.

 

ok i will thanks

 

2.4 is the new GENII block LSJ has the gen I

 

o wow

 

is the genI or genII block better and y is one better than the other if so??

 

GEN2 block is better its bigger

 

This is talking about the new 2.2ls but its still on the GEN II block:


Gen II Engine Block
The Ecotec 2.2L starts with a refined engine block, introduced for 2006 with the Ecotec 2.4L VVT (RPO LE5). The Gen II block was developed with data acquired in racing programs and the latest math-based tools. Both the bore walls and bulkheads, or the structural elements that support the crank bearings, have been strengthened, with only a minimal weight increase (approximately 2.5 pounds). The coolant jackets have been expanded, allowing more precise bore roundness and improving the block’s ability to dissipate heat. Coolant capacity increases approximately .5 liter.

The cylinder block is the engine’s foundation, and crucial to its durability, output and smooth operation. For GM, the common Gen II Ecotec block increases assembly efficiency. For the customer, the result is more efficient cooling, more strength to accommodate additional power, as in the new Ecotec 2.0L direct-injection Turbo (RPO LNF) and better noise, vibration and harshness control.

 

soo the 2.4 block is made for speed?

 

The 2.4 has the VVT where the 2.2 didn't, it also has a longer stroke then the 2.0 and 2.2. the new LNF however does have VVT, and aparently the new 2.2 will also have VVT as of 2009 (I think?). They are dropping the 2.4 from the cobalt engine choices.

 

sooo otherwords we are gonna have a rare car and does that mean are they going to drop aftermaket parts also????

 

what the hell does that mean. The block as been improved through research. Stronger, more durable, and more effiecent. just like all engines go through upgrades

 

it means that GM is not making 2.4s anymore

 

There really isn't that big of an aftermarket for the 2.4 alone. Alot of the parts are shared with the other models. Its not gonna make it rare, the 2.4 engine is still used in other GM cars, just not the cobalt. To add to it though, there are rumors taht the cobalt will completely be discontinued in a couple years. No truth to that yet, so who knows for sure. I would count on your cobalt being worth more money if thats what you were getting at.

 

o wow... all cobalts discontinued.... stupid chevy Cruz

 

Well if the Cruze gets the LNF it has my vote of confidence.

 

meant what the hell does that mean^^?

 

To help enlighten that question, engines aren't made for speed (necessarily)... Engines are made to be reliable at different levels of power. The more power your engine has, the more capable it is of reaching greater speeds, at an accelerated rate. So if your engine is made more reliably: its made with 205HP but certain parts can handle 400Hp, then its made reliable and then can be made more powerful. Which in the end affects speed and acceleration. But the more power you have, the less reliablee your engine becomes, because you are coming closer to certain ratings of parts in the engine. At that point you need to upgrade those parts, like the pistons or cams, etc... Some of these mods also give you more HP, along with a more reliable engine.

 

they are gonna have the LNF in it???

oooiccc

 

Possibly, no one knows for sure yet. As far as I know.