A spun bearing wouldn't explain the crap in the #3 and #4 cylinders, nor the lack of compression on the #2 Cylinder.

If that #2 cylinder had been "dead" for awhile. all the gas in that cylinder would have washed the oil off the cylinder walls and caused the scoring. All the extra unburned 02 would have also thrown off the wideband or normal 02 sensor, causing you to run the other 3 cylinders extra rich... also coating them in excess gas and increasing cyclinder wall scoring. But damn... I figured you would have noticed if you were runnin' on 3 cylinders....

 

unfortunately.. i can tell the difference..

It was running on all four... up until it start pinging..

It was pinging everytime i would accelerate... so once i got off the freeway and made sure all the vacuum hoses were connected

Everything ok

I turned it on and thats when i started hearing the loud noise coming from the engine (intake side)/injector

I Wasnt far from my dads so i drove it over there..

The chatter remained..

So...
Im guessing..
For whatever reason #2 lost compression (started pinging). Eventually it somehow caused damage on cyl 3&4 which started chewing up metal bits..

How... beats the crap out of me..

 

Ok I am really surpirsed with this case, and you all know a lot more than me, however I'll just try to throw my best theory.

What if N°2 is an unrelated event? Let's say the coil pack is failing and that's why it's clean, and the rest of your theories are right (I mean Maxxtib and Tim)?
Could the flaking be originated in high temperature, if engine was somehow overheating, or if gasoline from cyl.2 ignited down the manifold due to pressure/temp/incandescent carbon despoits, could that explosion have liberated carbon deposits down the manifold and send them up?

 

That would explain cyl 2... but WTF happened to 3 and 4?
I think somehow the rings rotated... well im hoping.

Its hard to say how it detonated.. timing on the car is VERY VERY VERY low. The map im running was for my boosted setup runing stock compression. Im currently NA with a 8.8:1 compression...
Unless....




The pressure coming out of the cyl is pretty strong man.. it would take A LOT of force enough for it to bring it back into the combustion chamber and cause a butt load of damage.

If that was the case.. cyl2 would have been severely jacked up.. and i would have seen a nice explosion while driving or some white smoke.

 

I would check your oil.. send a sample out to see what is in it. If Number 2 was just washing down the walls of the combustion chamber.. you should see a lot of fuel deposits in the oil.

What puzzles me is your overall PSI. After seeing that you are running 8.5 to 1 NA I would have expected your PSI to be around 165 at the most.

Spun or cracked rings is a possibility, a good one. Do they make "total seal" rings for the beta?

How was your headgasket when you pulled the head?

 

Looked almost brand new..

it was perfect...

 

Red is running 9:1 Compression and he's at 210 PSI (warm engine)
Some of the low compression readings on this motor is due to the cold engine/cold forged pistons not sealing properly.

 

ok heres my 2 pennies...i like the bad oil poump theory! beccause it it had been spun bearings...it would appear that he spun ALL the bearings on all the cylinders possible but unlikly, or he sprung a leak is is down about 2-3 quarts of oil. The white build up on the exhaust of the #2 cyl. is because the low compession (excessive blowby) all the fuel isnt styaing in the cylinder so that cylinder is running Lean (not a very long time though) and the cylinder head of 3 and 4 (poke holes) what i believed happen is: lack of oil on the cylinder walls created EXCESSIVE heat from the friction, which started to "drag" the rings against the walls (like putting ur windshield wipers on when ur windsheild is dry) and between the heat and the "dragging" effect on the rings broke the rings and a little piece managed to bang a round, but all the excessive heat from the lack of oil managed to heat the piston head an extra 100-200 degrees, which "softened" the piston head surface just the slighted bit that the broken piece of the ring, when it struck the piston, made an indent.

DAMN my head hurts now, too much thinking for me at one period of time! Well those are my pennis, i may be right, i could be wrong.... but thats all i can think of without seeing it in person, hearing the noises, doing some tests myself....a good way to chek my theory is while the engine running, use a pyrometer and check the temp of each cylinder!

anyways sorry to hear about the engine trouble....good luck

 

That is a good point. A very good point. What about your timing? Were you using an adjustable cam wheel? If it came loose and allowed the timing to drift some, you could have gone lean and the escaping fuel was burning in your manifold, which would have done nasty things to your valves.