Missing Pistons wtf!?
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B*a*n*n*e*d
Joined: Sep 2004
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Re: Missing Pistons wtf!?
This is my 4th blown motor due to moronic builders. 1st - AEBS sleeves sunk 2nd - Thrust washer installed backwards dropped thrust washer 3rd - sent ou AEBS block to get tested and decked then turboed sleeves sunk again 4th - detonation killed it due to heated head from head lift and not enough cooling.
SRP's had a bad rep many years ago. I have them in my B16 now with 9.9:1 CR. I don't think there is anything wrong with them since they fixed the issue. My pistons are 40K miles old w/ 17K boosted.
Your issue seems to be detonation, but you may be getting preignition now since you have many sharp edges with those chips in the pistons. The areas could be getting hot and this will cause more damage by preigniting the combustion event before it is supposed to. I would certainly buy new pistons and rings, investigate what may have caused this to happen and then retune.
Your issue seems to be detonation, but you may be getting preignition now since you have many sharp edges with those chips in the pistons. The areas could be getting hot and this will cause more damage by preigniting the combustion event before it is supposed to. I would certainly buy new pistons and rings, investigate what may have caused this to happen and then retune.
My old JE's did this same thing in all 4 cylinders from some pretty nasty detonation, I ran the motor for several thousand miles after and even tried to blow it and couldnt get it to quit, rings were melted to the ringlands and everything.
One thing I would definately do if I was you is check for bent exhaust valves and take your turbine housing off and look at the wheel, I would be suprised if it was undamaged..... my turbine wheel was destroyed.
One thing I would definately do if I was you is check for bent exhaust valves and take your turbine housing off and look at the wheel, I would be suprised if it was undamaged..... my turbine wheel was destroyed.
I am going to keep driving my car since i fixed the coolant/head lift problem...i just dotn want to further do any damage to the walls right now they are fine. Just wondering hwo long this is going to last with rings exposed like that.
oh and no i dont blame CP on this. It was my fault for taking so long to do a headgasket/ARP swap well knowing i had head lift and driving it long distances.
Last edited by user 98292739; Jul 23, 2009 at 09:20 AM.
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