Bent Rod Anyone? (hydrolocked motor tear down results)

[turboglenn]

Well, here's the only damage the motor that hydrolocked took... the bearings in the crank and all rods (even this bad one) were in great shape and almost looked new. The cylinders still had cross hatchings and i think i will be able to put new rings on a set of 2g pistons on 1g rods with ARP bolts i have layin downstairs and make a complete running shortblock as a backup.

Here's a pic of the only damaged part of the motor.... It took on close to 2 gallonsof water between the IC , IC pipes and what was added to the oil (not counting what flew out of the polug holes when i pulled them and crnked it over)

Anytime i revved past 3500 RPM or was more than 50% in the throttle the J&S would go crazy so i knew i had either wiped bearings or bet a rod and since there was no bearing noise i took my bet on the rod. I went to my parents house where i did the swap today to get some things and decided to pull the motor apart and see how well shemade out..

here's the pics - there's also one of my baffle-less valve cover that is being setup with some rather large vents that ihope should keep the gaskets in check under daily 30psi blasts down the roads/highways.. I will re-paint it before it goes on, still trying to figure my routing the best way before putting it in - The black part in the middle of the -6 lien is where i spliced the factory PCV valve into the line.. i will keep it in there, probably in a different spot though, between the can and intake

 

[ali]

nice job

 

[silvreclips]

Glenn - You always seem to be one of the more knownlwdgable people on this site, how did you allow this to happen to your motor? Was this in the 2g? Must have been one hell of a puddle if that much water got sucked up by the filter.

 

[El Cuervo]

Hey man, how did it happened? How did you absorb all that water? The same thing happened to me. I will never forget it. It was in November 4th 2003 at 2am. I had a very clean black 98 2g. I was driving on 120th Qst. behind were Q cinema 9 used to be. By the golf course. It was rainning. I went through a puddle. Though I put it in neutral. It still happened. Hydrolock. The car was repo and up to this day, I'm still paying for it. .

 

[toofast82]

Nice Rod, nice little curve to it! At least it didnt fly out of your block. Were those ARP rod bolts that held it on?

 

[DSMGraveyardinc]

Nice Mod!

 

[mobythevan]

Interesting that detonation will destroy a piston, but the hydro lock didn't seem to hurt the piston although the pressure was so great it bent the rod. Nice even pressure I guess. Pretty cool.

 

[Jeff99GS]

Interesting that detonation will destroy a piston, but the hydro lock didn't seem to hurt the piston although the pressure was so great it bent the rod. Nice even pressure I guess. Pretty cool.

Oh he got off lucky...I have seen hydrolock destroy blocks/pistons/rods and all.
Water doesn't like to compress so its got to go somewhere. Usually out the side of the block is a good place for it.

Seeing as our cars are lower compression the water may have gotten squeezed past the rings instead of Bursting the block.

 

[92AWDHX40]

Like the cover, wish i had one.

 

[turboglenn]

The drains were blocked with sandbags at the 120th abd L intersection, I was left turning on a yellow arrow. I slowed as best i could and even going through it at an idle it just f*ckered up my motor

I should have sued the city, but id still be waiting with the car broken MY air folter sits where the factory sidemount use to be ... i should probably change that *hmmm*

 

[crimsondragon]

This is why I would never have a true cold air intake. I'd rather make piping for air to follow through and to the filter.

 

[rEclipserGST]

That is lucky, but yea i def would move that Filter. Im sure the risk vs hp gain isnt reasonable.

 

[turboglenn]

Yea, it's getting relocated this coming week when the new turbo goes on...funny thing is that filer has been there for at least 5 years and no issues at all...then the dumbasses at the city department of roads puts sandbags in thee drains and forgets to remove them when it rains the next day and BAM... bye bye motor

BUT... it was a GREAT reason to build the lovely power house of a motor i now have ( at least it's a power house to me anyway)

 

[shredwin]

wow man... time for some Eagle Rods

 

[Mr Peepers]

Hell, it doesn't look much worse than this and it came out of a running car

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Didn't even know it till it was torn down.

 

[turboglenn]

wow man... time for some Eagle Rods

I now have eagle rods H-beams mated to some 9:1 wisecos

Hell, it doesn't look much worse than this and it came out of a running car

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Didn't even know it till it was torn down.

Peepers...what was the cause of yours bending?


The car was still running just fine, even the bearing didn't even take a beating... the only real clue i had that something was wrong was watching how the J&S was performing/acting after this happened.. Without it i wouldn't have noticed until i revved it p beating it and threw the rod through the side of the motor, but once again the J&S unit i constantly brag so heavily about saved me from driving my beater bronco around, and kept me informed enough that i didn't trash my "spare block" ( I always like to keep one running short block and a spare good head for those "just in case moments")

I'm going to put my 2g pistons that are on 1g rods and fitted with ARP bolts into this motor, button it back up and store it for that bad day that it might be needed by myself or a close friend... ( BUT i REALLY want it for my RWD project car ,,, that's what the HX35 is now going to go on, and the 20g will go on this my DD car)

 

[Mr Peepers]

Don't know really, perhaps an injector stuck open causing it to hydrolock, but I don't know any history of it sucking up water. The reason for teardown was unrelated.

 

[turboglenn]

^^.... Hmmm, Odd indeed...were you seeing a lot of phantom knock from that motor by chance? I ask because the J&S is really good at distinguishing real knock from phantom and the way it displays them you can tell them apart 90% of the time.... And i was getting TONS of PK all the time from the initial free ref to take off, and anywhere over 3500 RPM of 50% throttle

I think it would be about impossible to list everything that could cause PK.. you might as well just post an exploded diagram of the wholee care and title it "check all"

 

[Mr Peepers]

Never had anything to log with on that one. I want to say it wouldn't get phantom knock as long as the rod wasn't tapping the side of the cylinder, which it wasn't.