So yeah, GM did a real good job when they designed the LSJ.
Here's the stock rods and pistons (notice the chunk of number 4 sitting there)


Look at the "high strength" pistons they used


The rods look halfway decent, but I'm getting billet rods and a billet crank just to be safe


Glad to see we're paying $23,000 for a car that was built right
Well, at least after I'm done with it, the motor should be good for 750 hp and 9000+ rpm

 

Haha, Love the sig. Can't wait for you to get it running again

 

WOW what happened? That couldn't be from normal driving, and what kind of mods are you running? Any N2O?

That sucks man, but good luck and keep us posted with your new engine build!

 

If i am not mistaking this happen when he raced that SRT-4 am i right or wrong?

 

He was pwning a SRT in the process.

 

you try to mod the crap outa the car ... pushing it beyond what it was designed to be/do ... it blows up and its chevy fault?

 

+1......

 

+2.....

 

Ok true enough but be nice.

 

lol.........

anyway blown what rods you going with? I need to get a set soon myself and really don't want to go through jbp

 

+ 3 Geez, some peoples children.

 

he wasn't running a setup that anyone else here hasn't run before.

however with a more efficient power adder there would be no need to run as much boost nor spin the crap out of the blower and it probably would've saved his motor.

those are just my thoughts.

 

if you wanna go big start with big ... taking something small and trying to make it big isn't a very good root for a car you wanna accually drive not blow up all the time

 

As I agree with all of the above, GM is not as stupid as many think. GM knew this engine would be altered so the easiest thing to do was put a weak link deep enough into the engine that would keep "most" people from upgrading it. When this weak link fails, GM knows that significant alterations were made to the factory product, thereby removing any fraudulant warranty claims.
GM even went one step further by releasing a 300(b)hp which states the LSJ pistons maxed at around the 300(b)hp limit.
Because there are so many people willing to ignore the articles and say "they believe/are sure/guess that the pistons will hold much more, people don't listen to GM and skip the expense of changing this weak link.
We were all warned and for those who ignored the warning, "modder pay up"

 

I could not have said it better myslef. On another note, does anybody know if Titanium rods exist for our cars? That would be sweet.

 

his mods are like:
60# injectors
2.6" pulley
Cobra heat exchanger
Dual Pass Intercooler
His own custom tune
Short shifter
Pace setter header
3" Downpipe/exhaust Catless
K&N Intake
oh and there's probably a ton more but that's most of it.

Anyway, he blew it racing an SRT4 back to back 40-140ish pulls. he beat it both times

 

And on racing gas

 

The rods look like can take a beating. The crank is one of the strongest parts of the engine. Plus the billet steel crank is near 3 grand. Vic red is using his stock crank with some minor modifications.

 

Well at least he won the race! Who cares if the other guys car still runs right?

 

3g' for the billet crank think again... gm lists it for $4800 man.

 

Holy crap $4800? Either way, GL getting it up and running ... again lol. I have yet to see this car run for any length of time since I have been here.

 

No, I never said it was Chevys fault, however, they could have built a little stronger motor. My buddy has a 475 whp 50-trim SRT-4 on stock long block, the stock motor can handle that, yet the stock LSJ can't even handle a measily 300 whp?

 

And yet the pistons in the LSJ are the same as the ones in the SRT4.

I won't even get on your case about blaming GM building this weak motor for this car. Technically it was mainly Saab and not GM that designed the motor before the Cobalt was around. Plus S/C puts more strain on the motor than the Turbo, esp when your pushing this M62 like you are.

Anyway, how are your sleeves? I got to removing about half the oil pan bolts and started falling asleep so I stopped. I think if my sleeves are fine, I will just toss in the new pistons and rings, hope for the best.

 

My sleeves are perfect, so I'm leaving them. Aparently they're good for 700+ hp.

 

just out of curiosity, with the cobra he, and the dual pass, how many degrees cooler than stock were you running?