Well guys about a week or two ago my car shut off on the highway, jut down shifted and pushed it a little bit, maybe revved to about 7k, this is the outcome. They are trying to say it was from a miss shift, my friend was driving, I was passenger, there was absolutely not a miss shift, anybody have any ideas how this can happen.

The piston was completely gone and the rod to, the whole engine has scars and pieces of metal everywhere. I need some ideas of any other ways this might have happened.







Although me FTW for making a piston disappear.

 

I'd say it looks like you broke a valve and that took everything else out with it.

 

thats what my thought was as well, but how does one just break a valve, poor installation of the valve, not the right size for a port and polished head, rev to high???

 

The valve could have been damaged for a while and just finally had enough. Was the car ever overreved?

 

well if the engine shut itself off on the freeway
1- valve could have bin damaged there
2-possibly broke it
reason why it shut

then downshifting it to jumpstart it could possibly just made the damage more extensive,

not saying that is what happend,
jus a possibility , cuz if the engine suddenly shut itself... ther must be a reason why it did...

 

Looks like you dropped the valve first. It's all downhill after that .

 

Is that a rod bolt embedded into the exhaust valve and trapped under the intake valve? yikes

 

wow that suck's.happen to me on the hwy also with a 5th to 4th downshift pull droped a vavle up around 8500 rpm car jus mad bunch click n clanks and shut off..
my piston didnt disaper like that one did tho..



1week later

 

Valves can break. How old is the head? if it is a 1st or 2nd gen then your looking at valves that could be anywhere from 11 to 17 years old.

 

the head is only 2 months old, the valves were new, Also if i miss shifted bad enough to cause this damage wouldn't the trans be messed up to, cause my trans is perfectly fine. I'm just trying to grasp the concept of how this can happen, because it was no miss shift.

The first time my engine get dynoed after the build about 3 months ago or so, it jumped timing on the dyno, Could it have slightly bent a valve then and just taken until now to actually destroy everything.

 

B19 can you help me by describing how it looks like the valve was dropped first, if I can prove that I may have a free engine be built, because I can't except the fact that it was over revved because it didn't happen.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by simplsi &raquo;</TD></TR><TR><TD CLASS="quote">
The first time my engine get dynoed after the build about 3 months ago or so, it jumped timing on the dyno, Could it have slightly bent a valve then and just taken until now to actually destroy everything.</TD></TR></TABLE>

There you go..

You might have bent/cracked the valve from its shaft a little after it kissed a piston from your timing jump.. Than it just took a while for it to fully break off and dick up your pistons.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by simplsi &raquo;</TD></TR><TR><TD CLASS="quote">The first time my engine get dynoed after the build about 3 months ago or so, it jumped timing on the dyno, Could it have slightly bent a valve then and just taken until now to actually destroy everything.</TD></TR></TABLE>

Ding, Ding, Ding

 

yea I'm going to take that up with them tomorow, but also about the transmission would that be busted to because of such a "hard miss shift" Thanks for all the guys.

 

It should be fine. The motor takes the hit when you misshift, not the trans.

 

Screw fall out of your throttle plate? Just a shot in the dark.

 

What kind of valves?
I had a similar experience with Rev valves and my engine

 

sorry to say man, but you dunk'd a valve. Same thing happend to me. I had a perfectly built ls/vtec that we built and had 888miles on it when coming down the street to my house the thing "popd" and shut it's self off. Couldn't get it started again and when I tore off the head..... it look'd like a warzone. sadly to say, and I never knew it before that, but a defective valve can take a whole motor. (Damn defective valve BS!)

 

i'm kinda scared to ask but what kind of valves?

 

yes please can everyone who has had this problem and other poroblems please list
your valves company,pistons company,rod company,and instaler/builders
So theres no future defective valves used or poor quialty thanks

 

Valves were OEM, Pistons were OEM, Rods OEM, installer I am not going to put any names out because of further deduction of the engine I have yet to prove that it was the builder or the driver error.

 

how high were u reving this motor?

 

had you ever done a compression test at any time?

were the valves refaced?

 

Man, that happened to me too over a year ago. Two pistons were shattered, one half destroyed the other one just hanging in there. The head was gone too, needless to say it sucked big donkey dicks!!

JG

 

couldnt this be a rod issue as well because i dont think dropping a valve could completely take the rod off the crank? pull off your oil pan and post up a picture.... theres gotta be parts in there somehwere