turbociv910

This is obviously not a product of valve train failure. .

Ive never seen a broken valve lock up an engine, with the weight of the car behind it, and lock up tires.

Sounds like you had other unkown issues to cuase that

great pics btw.

Andy@AMR

I clicked on this a few days ago, and don't remember seeing any pictures till now. Crap! I've never seen a B-series motor blow like that, that's crazy. I'm curious to see the head, and what your engine builder finds out.

shawty22

The valve broke and hit inside the cylinder just right (Sideways, not flat) that something had to take the shock. There's an engravement in the piston and a small hole, which wasn't enough to absorb all the shock. The rod didn't break or bend so that didn't absorb the shock. So it went down to the crank and the mains, which those just shattered. Then lodging itself in the block making everything lock up. Trust me I know it's hard to believe...I couldn't believe it that's for damn sure. Let's just say I'm pretty fond of my piston/rod combo. Custom Ross pistons with Crower I beam rods, they're both pretty strong from the looks of things.

turbociv910

your telling me that a vertical standing STEEL valve roughly the size of a quarter is weaker than your aluminum piston? More importantly, your crankshaft.

Ill be leaving now.

FlewByU352

In for more info. Seems odd valvetrain would cause such destruction. I've had holes punched through pistons from the valve breaking off and it continued to turn over battering the spark plug and head but never once destroyed the bottom end like that. The pistons and head took all the damage. Not saying it's not possible, but it seems unlikely. Someone call in the Hardly Boys.

The sweed

I think that the mainbearing sized and that broke the crank or block/mains and then the crank. And that caused the piston to hit the valves and so on.. The bearing failiar must have come before everything else.

rs250nut

I have suffered similar engine damage to this before from a valve head snapping off so can understand how it can destroy everything so quickly, this is 100% down to valve failure not the bottom end locking up.

shawty22

As you can see in the cylinder....the valve is still in one piece. As for my crank...not so much. Or are you suggesting that my crank split in half randomly breaking off two intake valves in cylinder three...? A valve floating, and hitting the piston caused this no doubt. Everything else was just a case of bad luck...

bigG

iTrader: (6)

i would go with a dropped valve on this one but still need to see the rest of the pics especially retainers, what keepers did you use?

DDTECH

Seat pressure on said springs?.. pics of retainers? Ill ask a question but I don't expect a honest answer, have you ever mis shifted this setup.

gringotegra

You should change your title until you have REAL proof on what the problem was.



In for more info, really find it hard to believe the valve breaking caused ALL of that....

Turbo-LS

iTrader: (4)

Bearing failure, piston hit valve, valve broke and the rest you see in pics. It's happens so fast there is no warning when the pistons is moving as fast as it is.

90teg

That's the first time I have seen a crank snap. I have blown my share of engines but man, breaking a crankshaft is not easy. Has anyone ever done that?

DDTECH

People make 1000+whp on stock cranks. Anythings possible, I see keepers fail all the time, same with retainers.. But I HIGHLY doubt this is just a valvetrain failure.. something in the bottom end, had to help this situation.

shawty22

Title was changed unti I have time to go back to the engine builders to get pics of the head.

All this isn't stopping me from racing. Two days later after this all happened I bought another turboed integra that me and a buddy put together with all of our old parts from previous builds. Going to the track tomorrow. Hopefully have better luck this time.

DDTECH

Its a really shitty situation, glad your up beat about it. I'm truly sorry this did happen.

Its racing, **** will break eventually, after pushing the limits over and over and over.. I don't know why everyone acts surprised when this kind of stuff happens..

gringotegra

It sucks i know but blaming it on the valvetrain, thats a hard one....

shawty22

It definatley dropped the valve first. It made that noise...the crazy misfire, eating itself noise. It did that for a split second...then **** hit the fan. So it's just easy to say that it was the valve trains fault, cuz that's what happened first.

Also, thank you for all the pms. I am going to be looking for parts soon. If anyone knows of a sleeved gsr block give me a holler. I think I'm going to be picking up a virgin head from someone local.

The sweed

So where in your timeline does the bearing failiare occur? I have had rods seize to the point that the rod broke and caused holes in the block. Eagle rod distortion caused heat buildup at that particular failiar.

I can not see how a valve dropped first in this disaster. Please enlighten me.

1lowek2007

I can see it happening cause of a valve dropping. I had a motor get tore up reallllllly bad because the machine shop put some cheap *** springs and retainers when I paid for the best. Needless to say steel retainers didn't like 9500rpm, cracked a few and dropped a few valves and tore the pistons up, cracked a sleeve almost in half, tore the head up beyond repair, spun two rod bearings (they were completely crushed/demolished, not just spun) and had some damage to the crank but wasn't broke in half. So yea, I can see a dropped valve causeing tons of damage.

BrothaSit

i have a stock b16a head and stock gsr short block for sale. PM me if youre interested.

System Lord

iTrader: (1)

I ran ran this thing the the weekend before lmao gl

motoxxxman

valvetrain definitely failed before the crank, you can see the marks in the piston of repeated hammering on the valve heads. if the crank seized/snapped first, there would only be one single set of marks. but there are piles of marks, meaning the crank still spun around multiple times after valve damage.

whether the valvetrain failure caused all the rest, I don't know, but it is very possible under the right circumstances, especially at high rpm

shawty22

About a month before this happened I took the car to my engine builder to pull the pan, windage tray off to just check things over. Engine had roughly 2-3k miles on it at the time. He said the bottom end looked brand new, as if he just put it together. At that time we check valve lash. We set valve lash cold when the engine was on the stand. When we check it hot that day, some were off 3-4 thousandths, some were perfect, some only off 1 thousandths. Very inconsistent. Didn't think of anything at the time, just figured it was because of the engine was broke in and cold vs hot.

shawty22

This. I'm at the track today. I'll try to get to pics in the next couple of days. I know it's hard to imagine all of this without pictures. I'm trying to disc robe everything as specific as I can.