This is a darton stage 2.

 

Looks like the liner wasn't bored properly to accept the sleeve.

 

more details?

 

Howcome there's no heads on those head bolts? They must not be OEM?

 

The block was freshly built. I ran the engine for about 1000 miles to break it in. The outter sleeve cracked the first time I ran 8lbs of boost (during tuning with hondata). There was no sign of denotation shown on the head or the piston. This darton stage 2 suppose to hold 20+lbs of boost???

 

Where was the block done? Sounds like installation error.

 

Can you elaborate on what are the possible installation error?

 

Sounds like the clearances might have been off when installed and if your sleeves warped during those 1000 miles it could have broke apart the sleeve.

 

I am sorry, what clearances are you talkin about here?
Any help is appreciated.

 

Your bearing clearances.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">Howcome there's no heads on those head bolts? They must not be OEM?</TD></TR></TABLE>

those are called head studs, like arp.

 

err.. I dont believe is it a bearing issue.. if you do think so, maybe you can explain why???

 

You notice the aluminum bore the ductile iron liner slides inside of? The broken part? That clearance, the manner of insertion by the machine shop, etc, something like that.

 

you mean the cracked outter sleeve (aluminum bore) is caused by a bearing clearance problem?

how does that work?

These are the possible things that can do the damage, I was told.
- The head gasket was not sealed rite
- The sleeve slipped

What do you guys think?