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996 3.4 blown engine

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Old 03-05-2013, 09:54 AM
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rickgrande
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Default 996 3.4 blown engine

Recent problem I need some guidance on.

I was changing the coil packs and plugs on the passenger side. I jacked up the car from right rear, pretty high. After doing the work, I made the mistake of starting the car before I lowered the car to make sure everything ran right. So, car was tilted heavily to the driver's side. Because of the car's tilt, I guess the 6cyl was starved of oil (being the highest elevated cylinder) and the engine basically grenaded. Towed the car to my shop and 6 piston is no longer connected to the crank.

Is it really possible in this scenario that the engine really blew up of the cylinder being oil starved?
Old 03-05-2013, 10:45 AM
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KrazyK
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Man thats awful. Sorry to hear. Must have really been on its side to starve for oil. I have run mine many times on jack stands with no problems. You may want to contact Jake at Flat6 and ask.
Old 03-05-2013, 12:05 PM
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perryinva
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You seriously started your car, with one side up on jack stands? Not smart in the least, but while it may have been a factor, it would not normally grenade an engine. it culd only be up so high, or you couldn't have gotten in the car to start it. But yes, if it was oil starved (for whatever reason), that could easily happen.
Old 03-05-2013, 12:25 PM
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halik
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I would be surprised if jacking the car us is all it takes to blow the motor; probably d-chunk that finally let go.
Old 03-05-2013, 12:25 PM
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Byprodriver
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Originally Posted by rickgrande
Recent problem I need some guidance on.

I was changing the coil packs and plugs on the passenger side. I jacked up the car from right rear, pretty high. After doing the work, I made the mistake of starting the car before I lowered the car to make sure everything ran right. So, car was tilted heavily to the driver's side. Because of the car's tilt, I guess the 6cyl was starved of oil (being the highest elevated cylinder) and the engine basically grenaded. Towed the car to my shop and 6 piston is no longer connected to the crank.

Is it really possible in this scenario that the engine really blew up of the cylinder being oil starved?
I don't see how the piston & or rod is no longer connected to the crank. Spun rod bearings enough to lockup the crank maybe. How long did the engine run in this postion??
Old 03-05-2013, 12:48 PM
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Byprodriver
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Just saw that you are in Atlanta. Call flatsixinnovations.com & talk to them.
Old 03-05-2013, 12:48 PM
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KrazyK
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Surely pics and details will follow. Either way its a CEF and very bad for the OP. I truly am sorry but see if the engine can be saved before you give up.
Old 03-05-2013, 01:18 PM
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Nedster
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Sucks this happened to you. I doubt that it was slanted made much difference. That would imply that every time you would start your car on an incline there is a risk of engine blowing up?! From what i can see your car was supercharged at one point and you track it pretty hard, that might have done some damage.
Old 03-05-2013, 01:22 PM
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KrazyK
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I would be surprised if jacking the car us is all it takes to blow the motor; probably d-chunk that finally let go.
Sometimes just starting it can cause this.

Call flatsixinnovations.com & talk to them.
How many times does this need to be posted? Hope he does so.

From what i can see your car was supercharged at one point and you track it pretty hard, that might have done some damage.
Impossible, remember the thread where we were assured SC'ing an M96 caused no problems or risks?

Last edited by KrazyK; 03-05-2013 at 01:50 PM.
Old 03-05-2013, 01:42 PM
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groovzilla
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damn - that idea of a turbo is sounding better and better every day
Old 03-05-2013, 02:01 PM
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Ahsai
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That sux! Sorry to hear that...especially after giving it some TLC
Old 03-05-2013, 02:21 PM
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Goldenwarrior1
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Originally Posted by rickgrande
Recent problem I need some guidance on.

I was changing the coil packs and plugs on the passenger side. I jacked up the car from right rear, pretty high. After doing the work, I made the mistake of starting the car before I lowered the car to make sure everything ran right. So, car was tilted heavily to the driver's side. Because of the car's tilt, I guess the 6cyl was starved of oil (being the highest elevated cylinder) and the engine basically grenaded. Towed the car to my shop and 6 piston is no longer connected to the crank.

Is it really possible in this scenario that the engine really blew up of the cylinder being oil starved?
I find this HIGHLY unlikely... if that was the case then why wouldn't your engine grenade when on a race track? For example, Daytona's steepest angle is about 31 degrees... that's pretty steep! While starting a car on jacks is not a safe way of doing maintnenance, I doubt if it caused your issues. Sorry for the bad luck...
Tom
Old 03-05-2013, 02:36 PM
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Imo000
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How far into the redline did you rev it when the corner was jacked?
Old 03-05-2013, 02:41 PM
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M3BimmerBilly
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Originally Posted by rickgrande

Is it really possible in this scenario that the engine really blew up of the cylinder being oil starved?
No.
Old 03-05-2013, 02:54 PM
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fpb111
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More likely hydrolocked from oil pooling under the piston.


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