While reading another thread on a damaged EJ207, I figured I'd post a picture of my own damaged motor from a while back (last december)!

My blown up EJ20K :

Can you say Det-o-nation

Dang! What was the cause of the blow up?

/\rcanum

any more pics?

Geezus!! Is that the top of the piston?

Ouch!

What happened anyway?

Yeah man, please fill us in.

- N O R S E

Originally posted by PaulRex
Geezus!! Is that the top of the piston?

No that was the top of the piston :D

Good job!

My thoughts are always if your going to break something, do it well.

Thats one hell of a job :)

~v6

That's a winner. Damn. There's no half-assing here. Yikes.

-scu

Well, what I originally thought to be a cam clearance issue (which I thought I fixed by adjusting the clearance) turned out to be a bent valve that wasn't sitting properly...

The motor broke an exhaust valve while cruising at high speed on the highway... which subsequently broke the other valves and ate their way through the piston... I found 1 valve head in the oil pan!

I rebuilt the motor on a new EJ22T shortblock, and took out the holed piston and keep it as a souvenir!

Here's a picture of the cylinder head, notice how the hollow valve stems are still in there:

ooooo sodium filled valves...

what did you do to reapir the head ? or did you start over

I just bought a new head, they're not that expensive if you get them in Japan... around $400.

That looks painfull! :eek:

Man, that's looks bad. And the picture looks good. ;)

So, does that mean a bented valve will continue to work
until you push it at a very high speed for a long duration?

scooby5, did you see any symptom before it broke?
Any funny noise? Maybe you can give us something to
look for when it happen to our car.

Originally posted by V6turboTA
Good job!

My thoughts are always if your going to break something, do it well.

Thats one hell of a job :)

~v6

Hahaha, I agree.

So, did you get that cam fixed?:p

twlai,

As I mentionned in a previous post, I had "mis"diagnosed the problem to cam clearance. The cams on that cylinder were clicking away a bit too loud so I figured I'd check the clearance and it was off, maybe a bit too off in hindsight.

But I thought none of it and simply swapped the underbucket shims to thicker ones, and off I went... It all went to hell on the highway, I guess the stress on the valve from being slightly bent was enough under higher rev to break it.

I got my melted piston pics too, as a souvenir!!!

..there should be a club for this :)

http://www.imagestation.com/album/?id=4291305785

http://www.imagestation.com/album/?id=4291305785

http://www.imagestation.com/album/?id=4291305785

Pic's are inside, like 4, 5, and 6...

~B

Edit: for URL's

Edit: again, cause I suck!