Engine build gone bad

[aaronr]

I had a local machine shop put together a turbo motor for me and the rings never seated. The motor had blow by like there was no tomorrow. Motor only had 2k+ miles when it got pulled from the truck. I took the motor back to shop that build it and they couldn't figure out why the rings didn't seal.

Block 2000 LS1
Piston Probe SRS 2618-t6 wall to piston clearest is .004
Piston size 3.898 bore size 3.902
Top ring gap .024 second ring gap .032

Here are some pics of the cylinder walls. The wear marks are very smooth and all 8 cylinders look like this.




Some pics of the piston skirts.








Let me know what you guys think.

[CHEVROLADE]

sorry to hear that....

[DBRODS]

alot of the piston skirt marks could be from trash still in the block after assembly or if they didnt radius the bottom edge of the cylinder wall. After boring/honing it becomes very sharp at the base of the cylinder and needs to be cleaned up, if not then when the piston skirt travels below the cylinder bore the sharp edge digs into the piston...

[double047]

Dang sorry to sed this.

[kerrige]

Which machine shop built it?

[aaronr]

Machine shop in Mesa. If you want more if pm me.
Thanks

[aaronr]

The edge of the cylinder feel like it has a little bit of edge.

[chvy=power]

iv heard if you run synthetic oil during break in period the metal parts wont mate to each other properly...dont know if this is your case or not

[aaronr]

iv heard if you run synthetic oil during break in period the metal parts wont mate to each other properly...dont know if this is your case or not

I used conventional oil.