Time to upgrade!!

 

I would check to see if your engine oil is really diluted with fuel. Perhaps you have a bad injector that was just dumping fuel in to that cylinder.

 

I would agree and thats why I was wondering if it had meth injection (or 100% water as the case may be) and was running into ignition issues trying to cut through it. If it was 100% meth I would suspect pre ignition if it didnt light and a dead sleeve. That is why I am wondering if it was 100% water or the piston was just cleaned up for the photo?

Also for the side of the piston to be scuffed like that indicates a sudden loss of lubrication consistent with a split sleeve or hydraulic'd piston.

 

Then it becomes a game of which came first the chicken or the egg? Did the sleeve split and wash the cylinder down and hydraulic or is it that it hydraulic'd and took out a sleeve. I would be curious to see a shot of the bore if you can Mark.

 

Very Interesting . I rung Raliart here in NZ looking for some parts and the first thing he said when he found out I was modifying my x was to throw some rods at it. He said they have had a few problems with them. He seemed to think the standard turbo could produce too much Tq at to lower rpm for the rods. They supply all the Evo x RS's into new zealand. I dissmissed it but maybe there is something in it .

 

I'm upgrading mine right now and was just looking at them yesterday with my mechanic. He said that the rods look sturdier than what is found in previous Evo motors. The big difference with the rod bolts is that the stock bolts are fully threaded--the Arps and other aftermarket only have threads at the end.

 

When the 4b11t first came out, a number of people torn them down and compared the internals to the 4g63. The rods of the 4b11 are significantly beefier than the 4g63. The torque levels seen on this engine are not unheard of..... Guys here in the States are producing more torque with the stock turbo on E85.

I does look like hydro-lock in this situation, but from what?

 

As clean as the piston is I would tend to think 100% water.

 

The last time I saw a rod bent like that the person was running nitrous...

Good luck on the rebuild, it's always more of a pain to do one when the engine failed.

 

UK super unleaded 97 RON no meth nothing special

ran on 3 cylinders, pulled a plug and it was oily...fitted a new plug and it ran sweetly for about 10 miles, no crank damage afaik, also I'm on std turbo!!!

Definitely not hydro, but I agree does look similar

 

Rod is bent and twisted, piston worked it's way sideways into my bore

Sleeve isn't split, but badly, deeply scraped I don't have a bore pic, but will get one for you

head gasket and block intact, definitely not water!!!!

Thanks, no nitrous either! I wish I had an obvious answer for you, but I wasn't running anything out of the ordinary1 It had been on a dyno a couple of days earlier and was lean at wot, so I booked it in to get sorted, then this!!!!

 

Suck up any horse blood in the intake?

 

Mark, thanks for putting up with my conjecture. Did you clean the piston then?

 

I talked to a diamond star Mitsu tech and he also said sounds like you got water in the engine (hydro locked)

 

There are plenty of guys having rod failures that don't seem to be tune related. That one looks a little odd for sure.