Whats the best method for fixing dings in piston face?
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Joined: Nov 2001
Posts: 2,985
From: In a house by the bay
Originally posted by WS6 TA
94Sleeper- I think that you're looking for a bigger problem then a broken valve spring or valve guide. it's fairly unlikely that something would make it from one bank of the engine to the other. Broken valve guides usually go along with bent valves and/or valves contacting something. One or the other just letting go... well, it might happen, but neither is very likely to cause the other and both happing by themselves at the same time is unlikely. I wouldn't be that suprised if this was caused by overreving the engine or possibly a problem with how the heads were originally assembled.
94Sleeper- I think that you're looking for a bigger problem then a broken valve spring or valve guide. it's fairly unlikely that something would make it from one bank of the engine to the other. Broken valve guides usually go along with bent valves and/or valves contacting something. One or the other just letting go... well, it might happen, but neither is very likely to cause the other and both happing by themselves at the same time is unlikely. I wouldn't be that suprised if this was caused by overreving the engine or possibly a problem with how the heads were originally assembled.
Having broken quite a few valvesprings, valve keepers and other stuff in the valvetrain over the past 25 years of racing I've seen first hand the damage it can cause. You drop a valve and you will end up with pieces of shrapnel in just about every cylinder. How do I know? Well I've dropped a fair share and that's why I'm so **** about keeping an eye on the valvetrain.
With the valve gone, there's nothing keeping pieces of it from traveling back up the intake port and into the plenum where it is likely to make it into other cylinders. As I said, this is not an uncommon thing to see, if you've been around for a while.
-Mindgame
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Joined: Dec 1969
Posts: 10,745
From: Buffalo, New York
Originally posted by Mindgame
You won't be surprised to hear that I don't agree.
Having broken quite a few valvesprings, valve keepers and other stuff in the valvetrain over the past 25 years of racing I've seen first hand the damage it can cause. You drop a valve and you will end up with pieces of shrapnel in just about every cylinder. How do I know? Well I've dropped a fair share and that's why I'm so **** about keeping an eye on the valvetrain.
With the valve gone, there's nothing keeping pieces of it from traveling back up the intake port and into the plenum where it is likely to make it into other cylinders. As I said, this is not an uncommon thing to see, if you've been around for a while.
-Mindgame
You won't be surprised to hear that I don't agree.
Having broken quite a few valvesprings, valve keepers and other stuff in the valvetrain over the past 25 years of racing I've seen first hand the damage it can cause. You drop a valve and you will end up with pieces of shrapnel in just about every cylinder. How do I know? Well I've dropped a fair share and that's why I'm so **** about keeping an eye on the valvetrain.
With the valve gone, there's nothing keeping pieces of it from traveling back up the intake port and into the plenum where it is likely to make it into other cylinders. As I said, this is not an uncommon thing to see, if you've been around for a while.
-Mindgame
Rich Krause
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