BCobaltSS

sorry to hear man . With all these stories lately I'm afraid to run a compression test

cobaltguy889

its better to know right away rather than be worried and put it off till things get worse.

thought

Yeah GM's pistons can handle GM parts and tune just fine. Don't blame them. Have a look on NASIOC if you think it's a GM-only thing to put pistons that can only handle stock power.

Am I correct in the fact that our stock fuel system causes lean conditions in #4? So proper fuelling would solve the root cause, right? Tuners please chime in, so I know if I should buy pistons or just return style system lol!

cobaltguy889

the pistons are the weakest part in our cars. but then again, BCP is hitting 400+ hp on a stock mtor with a turbo. Its all about tuning, cooling mods, and yes, keeping up with fuel. But usually bigger injectors will be enough fuel wise, unless your shooting for huge numbers. Oh, and yes, #4 is always the first to lean out...

ebristol

iTrader: (4)

I don't think the problem has been determined 100%. Some people think that since the #4 cylinder is the last in the fuel rail it get less fuel then the others and that is why it fails.

Some people think that the way the SC is mounted and the way the Intake Manifold is designed that more air flows into the #4 cylinder.

I don't think anyone knows for sure.

Ottp just added the new Siemens 80# fuel injectors btw...

Weird huh?

I like your new sig!

cobaltguy889

lol TY Most of the parts I have bought have been off the forum for the turbo and the rebuild, so i figured i'd give thanks! lol

shadowfaxss

iTrader: (3)

Are you going with different pistons?

cobaltguy889

yea, i already have diamond racing forged pistons that i bought through OTTP

krazycobalt

Your lucky my friend. Very very lucky

blackbolt89

"granny shiftin not double clutchin' like you should, now me and the mad scientist have to tear apart the block and replace the piston rings you fried"

i'm really surprised no one quoted that before me. lol

but really! think of this as a good thing! now you can get all new pistons!!

cobaltguy889

i don't want no fast and furious in my thread lol...

blackbolt89

at least you can build it up now!

G85 SS

Tis Normal.


That's crazy.

damien

iTrader: (3)

My first engine popped just like yours, wall was fine.

2nd time the very edge of the ringlands broke.

cobaltguy889

^^^That sucks!

thats how i look at it. Out with the weak...in with the forged lol...

SuperchargedSS

LNF FTW Yo! ... lol

Just kidding... glad to hear this didnt jack up your sleeve...

cobaltguy889

keep that lnf garbage outta here! I don't want any talk about an over rated motor in my thread!