[Z06] one of my valves broke @ 82,000
10-11-2012, 02:49 PM
#1
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one of my valves broke @ 82,000
The engine is sleeved correct? so i can get a new piston and sleeve and get it honed? just wanted to make sure before i start taking the engine apart. Has anyone else had this happen? Hopefully the head is salvagable. We shall see.
10-11-2012, 04:57 PM
#4
Melting Slicks
10-11-2012, 07:17 PM
#7
Le Mans Master
My guess is the spring let go, causing the valve to get crunched. The LS7s have had issues with the hollow exhaust valves snapping the heads off, but I've never heard of that problem with the LS6.
10-13-2012, 12:17 PM
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the engine is getting taken out net week and going to the machine shop, ill know a lot more from there. Im hoping i can just get a new piston and sleeve as far as the bottom end is concerned, we shall see. i'll let ya'll know if it was the spring or the actual valve that broke. I just got the car 3 months ago and was planning on getting new springs and a port job on my heads, but i guess i was a week too late with those plans.
10-13-2012, 02:37 PM
#11
Race Director
the engine is getting taken out net week and going to the machine shop, ill know a lot more from there. Im hoping i can just get a new piston and sleeve as far as the bottom end is concerned, we shall see. i'll let ya'll know if it was the spring or the actual valve that broke. I just got the car 3 months ago and was planning on getting new springs and a port job on my heads, but i guess i was a week too late with those plans.
Last edited by MY03C5Z; 10-13-2012 at 02:39 PM.
10-13-2012, 02:52 PM
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More than likely the spring broke then the valve dropped and broke after contacting the piston. I've not heard of many people having one cylinder resleeved after this happening, most seem to end up with a new block. I assume the machining cost is pretty high. Also as far as I know you can't just replace one piston. Your going to need to tear down the motor and go with all new bearings have rods resized etc...as far as $$$ your probably better off trying to find a low mile motor in good shape. Depends what you want to do with the car though. Let us know how it works out.
10-13-2012, 05:36 PM
#15
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Seen many broken valves in LS6's (generally spring breaks first) and the damage ends up being pretty costly.
Generally speaking, the ls6 blocks are not great candidates to be re-sleeved and in all likelihood the cylinder head is toast.
Sorry for the pessimistic outlook and hope I'm wrong.
10-14-2012, 05:21 AM
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Sorry for the issues.
Seen many broken valves in LS6's (generally spring breaks first) and the damage ends up being pretty costly.
Generally speaking, the ls6 blocks are not great candidates to be re-sleeved and in all likelihood the cylinder head is toast.
Sorry for the pessimistic outlook and hope I'm wrong.
Seen many broken valves in LS6's (generally spring breaks first) and the damage ends up being pretty costly.
Generally speaking, the ls6 blocks are not great candidates to be re-sleeved and in all likelihood the cylinder head is toast.
Sorry for the pessimistic outlook and hope I'm wrong.
10-14-2012, 10:58 AM
#18
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Dude, dont take offense. maybe the guy was talking about himself and not having common sense? I dunno... just let it slide off your back either way.
Now... first, as a father of a US Marine, myself, my wife and my son thank you for your courage and service to our country.
Second... Unfortunately you were the victim of a common issue with the LS6. You just missed thwarting the issue. Vettes can be expensive to repair, its true... but dont get discouraged. For every problem story with an LS6 theres 500 stories that are great experiences. In general, the LS6 is a hearty engine that can take abuse. Look at this as a chance to upgrade your Z06 and take advantage of the opportunity to make it a beast. Ask some guys with modded Z06's what theyve done and find out what works best.
Lastly, dont give up and go back to imports... You can do all kinds of suspension upgrades if thats your thing.... but you will never have an import with the complete package that a Z06 offers.
Good luck and just ask anyone for help when you need it.
Now... first, as a father of a US Marine, myself, my wife and my son thank you for your courage and service to our country.
Second... Unfortunately you were the victim of a common issue with the LS6. You just missed thwarting the issue. Vettes can be expensive to repair, its true... but dont get discouraged. For every problem story with an LS6 theres 500 stories that are great experiences. In general, the LS6 is a hearty engine that can take abuse. Look at this as a chance to upgrade your Z06 and take advantage of the opportunity to make it a beast. Ask some guys with modded Z06's what theyve done and find out what works best.
Lastly, dont give up and go back to imports... You can do all kinds of suspension upgrades if thats your thing.... but you will never have an import with the complete package that a Z06 offers.
Good luck and just ask anyone for help when you need it.
10-14-2012, 03:25 PM
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Dude, dont take offense. maybe the guy was talking about himself and not having common sense? I dunno... just let it slide off your back either way.
Now... first, as a father of a US Marine, myself, my wife and my son thank you for your courage and service to our country.
Second... Unfortunately you were the victim of a common issue with the LS6. You just missed thwarting the issue. Vettes can be expensive to repair, its true... but dont get discouraged. For every problem story with an LS6 theres 500 stories that are great experiences. In general, the LS6 is a hearty engine that can take abuse. Look at this as a chance to upgrade your Z06 and take advantage of the opportunity to make it a beast. Ask some guys with modded Z06's what theyve done and find out what works best.
Lastly, dont give up and go back to imports... You can do all kinds of suspension upgrades if thats your thing.... but you will never have an import with the complete package that a Z06 offers.
Good luck and just ask anyone for help when you need it.
Now... first, as a father of a US Marine, myself, my wife and my son thank you for your courage and service to our country.
Second... Unfortunately you were the victim of a common issue with the LS6. You just missed thwarting the issue. Vettes can be expensive to repair, its true... but dont get discouraged. For every problem story with an LS6 theres 500 stories that are great experiences. In general, the LS6 is a hearty engine that can take abuse. Look at this as a chance to upgrade your Z06 and take advantage of the opportunity to make it a beast. Ask some guys with modded Z06's what theyve done and find out what works best.
Lastly, dont give up and go back to imports... You can do all kinds of suspension upgrades if thats your thing.... but you will never have an import with the complete package that a Z06 offers.
Good luck and just ask anyone for help when you need it.
10-24-2012, 12:42 AM
#20
Melting Slicks
Any updates?
