I blew up my BP with speed6 k04 this weekend. I knew it was going to happen, but was expecting rods. Well i found extreme detonation/ melting on piston number three. No other pistons show any signs of detonation. My beliefe is that this was caused by lack of fuel in that one cylinder, most likely a clogged injector. Am i wrong thinking this?

 

Niiiiiiiiiiiiiiice, what's the block look like?

 

Sound hypothesis.

 

cylinder walls are pretty messed up, ill add this is on intake side if that helps.

 

what is controlling your fuel?

 

Close up pictures of number four piston, please.

 

wait what?

 

He's using a K04 from a Mazdaspeed 6.

 

im intrigued, i always wanted to swap a k04 on my msm. my previous car was also a speed6 and i have alot of left over parts including a k04. ill have to look into this

 

That seems like a waste of time and money.

 

is this the same piece of crap k04 that has failing seals when you install exhaust and turn up the boost?

 

what in the world are those studs in the head?

 

I thought that was a Subie thing. They do the same on the Mazdaspeeds? That's fun.

 

The head bolts....

 

subie? subies have td04's not k04's. and they don't fail like this k04 pile of junk. dunno what you talkin bouts willis

 

Local subie autox guys are always blowing turbos. They're both shitty and have "04" in them, you expect me to know the difference?

 

yeah the k04's arent the best turbo, but it was cheap. Im using megasquirt pnp2 with rx7 460cc injectors. Ill get some more pictures next time im by the car.

 

the head bolts, lifted it off with the engine hoist since i already had the chain hooked up, left the bolts in the holes.

 

show us your spark table and logs of AFR

that piston looks like it was gangraped by a train of detonation.

 

Wow man, that things really fubar'd.

I'd send the injectors out to be tested and then cleaned if i were you. Do that and report back