SY is defenately down

[Neo]

Hey all,
Last year i was having some engine output trouble on the SY,after lots of mods,thigs got worse,so i decide to take the cylinder compressions...and 3 of them had less than 6 Bars of compression,so i took off a head and found this...



the 2 others are still looking good,i'm gonna get off the left side and i will see if there is any other damage.
Can someone tell me how this could happen?the truck has around 40K on the clock,and is fully stock,exept a FMIC and stainless exhaust with cat.
Should i replace the turbocharger?(i presume that piston debris got trough)
Thanks!

 

[2fast4u]

Re: SY is defenately down

Hey all,
Last year i was having some engine output trouble on the SY,after lots of mods,thigs got worse,so i decide to take the cylinder compressions...and 3 of them had less than 6 Bars of compression,so i took off a head and found this...



the 2 others are still looking good,i'm gonna get off the left side and i will see if there is any other damage.
Can someone tell me how this could happen?the truck has around 40K on the clock,and is fully stock,exept a FMIC and stainless exhaust with cat.
Should i replace the turbocharger?(i presume that piston debris got trough)
Thanks!

Looks like detonation killed it off. Im worried to find the same problem on mine. What were your symptoms?

 

[Neo]

Re: SY is defenately down

Hi,
I had a serious lack of power,the engine hesitates,
and lots of pressure came out of the rockercover venting tubes and drained all the engine oil by blowing it in the intake (so my airbox looked like an oil sump)

now the block is at the machine shop,to bore out the cylinders.
and have some forged pistons fitted.