timing chain

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greatness

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has anyone had there timing chain replaced on a V6 and if so how much did it cost

and has anyone ever replaced it by themself
 
I would say at least 1k if you have someone do it.. maybe even more..

You can do it yourself if the valves haven't hit the piston..
 
FASTLLS said:
I would say at least 1k if you have someone do it.. maybe even more..

You can do it yourself if the valves haven't hit the piston..
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Prolly will cost more than $1000 seeing it broke while going down the highway. It will cost that if you do it yourself and more if someone else does it. A piston definitely hit a valve seeing it was running when it broke. These are zero tolerance motors so it hit a piston.

To Greatness: to fully know the damage, you need to take off the valve covers to see if it was a secondary or primary timing chain that broke. If it was a secondary chain then just the head on that side needs to be taken off and fixed. If it was a primary chain, then both heads would need to be removed and fixed. Good Luck!!
 
SlickLS said:
Prolly will cost more than $1000 seeing it broke while going down the highway. It will cost that if you do it yourself and more if someone else does it. A piston definitely hit a valve seeing it was running when it broke. These are zero tolerance motors so it hit a piston.

To Greatness: to fully know the damage, you need to take off the valve covers to see if it was a secondary or primary timing chain that broke. If it was a secondary chain then just the head on that side needs to be taken off and fixed. If it was a primary chain, then both heads would need to be removed and fixed. Good Luck!!
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have u replaced it urself before
 
greatness said:
have u replaced it urself before
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Yes I have, but like FastLS I have the V8 in mine. It is the same concept from the V8 to V6. Mine broke upon starting the car and I damaged some valves. I changed all the chains, tensioners, guides, and seals behind the timing cover. I didn't mess up a piston, but like I said mine broke while starting my car so it didn't have that much force behind it unlike yours seeing you was on the highway. I pulled the head, driver's side, with the motor still in the car.
 
FASTLLS said:
Drivers side is the sh!tty side too..
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Yea tell me about it. Most people have a problem changing the valve cover gasket on that side, let alone pull the head off from that side. I didn't have to remove the brake booster either. Don't get me wrong, it was a pain and I wanted to give up at times, but I pushed through it and now its been about 15,000 miles.
 
Holy crap ! Ok so I admit, after I was told that it was too much work for my Mech to spend time on I didn't really do any research I just called it quits. So if I was starting my car and a timing chain broke its less severe damage than if I were driving ? And it might be repairable by myself? I have a v8 btw 2000. Its tore down to the chain on the pass side but It got to cold to do the driver side. I need to look up some info on this before I sell anything else !! A rebuild might be possible after all !
 
one rotation of the motor - driving or not - will have valves hit pistons....

to pull the heads off an LS is $1000s - and it is the only way to know for sure how bent the valves are and how mashed the pistons are...
you cannot buy a piston, so if a piston is damaged, you are swapping engines - since swapping a loaded block costs more...
 
Quik LS said:
one rotation of the motor - driving or not - will have valves hit pistons....

to pull the heads off an LS is $1000s - and it is the only way to know for sure how bent the valves are and how mashed the pistons are...
you cannot buy a piston, so if a piston is damaged, you are swapping engines - since swapping a loaded block costs more...
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so i should just buy a new engine
 
Quik LS said:
one rotation of the motor - driving or not - will have valves hit pistons....

to pull the heads off an LS is $1000s - and it is the only way to know for sure how bent the valves are and how mashed the pistons are...
you cannot buy a piston, so if a piston is damaged, you are swapping engines - since swapping a loaded block costs more...
Click to expand...

When my chain broke, it did bend some valves but did not mess up the piston. The whole job cost me about $1100 but the was replacing all the chains, tensioners, seals, and guides. That also included the tab on getting the head fixed by a shop. Mine broke while starting so when things hit, it didn't hit that hard. Seeing you were going down the highway, I have a feeling you prolly damaged the piston pretty bad. I will agree with Quik and Joe on just saving some time by getting a used engine to put back in your car. Good luck and keep up posted on your decision.
 
I have a one of those cameras that you can feed into the spark plug hole and scope around - but it's still very tough to see if you bent the valves - if the chain is broke you can't rotate the engine to see everything close nicely - so unless the damage is very obvious it hard to be sure....
 
Quik LS said:
I have a one of those cameras that you can feed into the spark plug hole and scope around - but it's still very tough to see if you bent the valves - if the chain is broke you can't rotate the engine to see everything close nicely - so unless the damage is very obvious it hard to be sure....
Click to expand...

One way to check for valve damage is to pull the valve covers off and check the valve lash. If there's too much play, then they've been bent.
 
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