Whats the number on top of the piston???

I can see the ring imprints in the cylinder bores, good chance you will need to go over size.

Look at the gunk line on the Hyd tentsioner, it looks like it was right. when you dropped the belt the hyd tentsioner fully extended.

Ahh makes sense about the tensioner.

Dont oem pistons say 6T?

I figured I'd have to go over size not too disappointed by that.

Looks like 55DT

I'll clean em up tomorrow and get a pic.

The guy i got it from said it was a head gasket issue but the gasket looked fine to me. But i thought it might be from dried coolant.

well the some of the valves have been replaced before. Great Post. and going with Magnus is never a bad thing.

They are so close i can't not have him to the machining.

63DT are the stock/NPR turbo pistons.

Also looks like the timing belt failed at one point, vale marks on the crowns.

I would have to say the engine ran lean to bust the ring lands, too much boost not enough fuel/ not the correct supporting mods, ect
( think maxed out holeset with stock fuel injectors)

The major components look decent for reuse tho.

Good to hear. I habe mo idea what the guy did to this and i dont care long as it's a good core . All he said is it had 80k miles and a blown HG. I'll buy some magnaflux after it's cleaned to check for cranks. As long as the block and crank are good I'm happy. I jad thought the valves touched the pistons too bit i thought it could have been relief marks.

If you go back and look at the pic in post #21 you will see the blue stripes on the bottom of the head, and then you can tell on the block pic that is a Felpro composite HG.

Also the pics of the head show that they have a full set of the factory 6T valves.

My bet would be the timing belt broke and killed the valves and another head was swapped on.

Now with the block apart, and before you go have the block cleaned and machined, I would port the the front oil galleys of the block and get rid of the crud from casting that is in there.

http://www.dsmtuners.com/forums/articles-engine-fuel/452546-4g63-block-oiling-mod.html#post153148047

Yep oil port mod! Gonna def do it

Great post and pictures!
I just pulled my six bolt out of my 2g and am starting the tear down also!
Have no idea the current internals(motor came with car), but I did pull the oil pan once to replace the gasket and from what I could see I believe it to be 1g big rods and 2g pistons? No true idea until the tear down begins this weekend.

A little off topic, but could those internals hold up to ~500 hp?

The stock 6bolt motor has gone 9.2 @150+

Good enough for me. Not gonna be anywhere near that ( hopefully low 11s)

Just make sure your tuning is spot on. Forged internals just mean a larger safey window when it comes to knock.

Going to be using meth injection with a large turbo on the lower end of the compressor map and all supporting mods with a large safety margin there. Just didn't know how well the stock internals hold up