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Message: Lifter replacement is not an engine out job. The dealership doesn't bother cleaning them..
Changed By: MarcW
Change Date: May 08, 2014 12:30PM
Lifter replacement is not an engine out job. The dealership doesn't bother cleaning them..
Change Date: May 08, 2014 12:30PM
Lifter replacement is not an engine out job. The dealership doesn't bother cleaning them..
[quote=tonyd]
To give an optimistic example of Fixes, the Lifter issue is interesting.
Apparently the lifters can be dismantled,clean the ball, check the spring, inspect for cracks ,refill with oil and refit. The problem is I think this is an 'engine-out' job . So even if you have no lifter noise ,cleaning and inspecting them should(?) be on the to-do list when you have the engine out and apart. It would be a pity to miss this and then get lifter noise after you've re-installed the engine.
I wish the Variocam units were as easy/inexpensive to service as a dirty lifter..[/quote]
but instead replaces them. All on that bank. This follows the factory repair guidelines. The concern is there are bad batch of lifters so to reduce the possibility of a bring back and an even worse customer experience -- I heard of one new owner refusing to accept his new 996 back after it had its lifters to replace so even just having one or some get noisy and replacing them doesn't always leave a customer with the warm fuzzies... -- the factory says to replace all lifters.
Out of warranty, of course, an owner could clean and replace and hope the lifter wasn't damaged and thus compromised and would cause problems later on.
Also, I was told the other day that sometimes the lifter if it collapses can damage the cam lobe. The lifter remaining stationary or with limited movement causes the cam lobe to wear. The lobe is lubed by leakage of oil from around the lifter body and if this leakage is diminished this can ruin the cam.At its lowest point, this nearly exposes the oil hole which feds oil into the lifter bore and the lifter body. But the body's oil hole is out of position so no oil can flow into it. But this as I said nearly exposes the oil hole and copious amount of oil comes out and floods the cam lifter face against which the cam lobe is pressing.
To give an optimistic example of Fixes, the Lifter issue is interesting.
Apparently the lifters can be dismantled,clean the ball, check the spring, inspect for cracks ,refill with oil and refit. The problem is I think this is an 'engine-out' job . So even if you have no lifter noise ,cleaning and inspecting them should(?) be on the to-do list when you have the engine out and apart. It would be a pity to miss this and then get lifter noise after you've re-installed the engine.
I wish the Variocam units were as easy/inexpensive to service as a dirty lifter..[/quote]
but instead replaces them. All on that bank. This follows the factory repair guidelines. The concern is there are bad batch of lifters so to reduce the possibility of a bring back and an even worse customer experience -- I heard of one new owner refusing to accept his new 996 back after it had its lifters to replace so even just having one or some get noisy and replacing them doesn't always leave a customer with the warm fuzzies... -- the factory says to replace all lifters.
Out of warranty, of course, an owner could clean and replace and hope the lifter wasn't damaged and thus compromised and would cause problems later on.
Also, I was told the other day that sometimes the lifter if it collapses can damage the cam lobe. The lifter remaining stationary or with limited movement causes the cam lobe to wear. The lobe is lubed by leakage of oil from around the lifter body and if this leakage is diminished this can ruin the cam.At its lowest point, this nearly exposes the oil hole which feds oil into the lifter bore and the lifter body. But the body's oil hole is out of position so no oil can flow into it. But this as I said nearly exposes the oil hole and copious amount of oil comes out and floods the cam lifter face against which the cam lobe is pressing.
Original Message
Author: MarcWDate: May 08, 2014 12:20PM
Lifter replacement is not an engine out job. The dealership doesn't bother cleaning them..
[quote=tonyd]
To give an optimistic example of Fixes, the Lifter issue is interesting.
Apparently the lifters can be dismantled,clean the ball, check the spring, inspect for cracks ,refill with oil and refit. The problem is I think this is an 'engine-out' job . So even if you have no lifter noise ,cleaning and inspecting them should(?) be on the to-do list when you have the engine out and apart. It would be a pity to miss this and then get lifter noise after you've re-installed the engine.
I wish the Variocam units were as easy/inexpensive to service as a dirty lifter..[/quote]
but instead replaces them. All on that bank. This follows the factory repair guidelines. The concern is there are bad batch of lifters so to reduce the possibility of a bring back and an even worse customer experience -- I heard of one new owner refusing to accept his new 996 back after it had its lifters to replace so even just having one or some get noisy and replacing them doesn't always leave a customer with the warm fuzzies... -- the factory says to replace all lifters.
Out of warranty, of course, an owner could clean and replace and hope the lifter wasn't damaged and thus compromised and would cause problems later on.
Also, I was told the other day that sometimes the lifter if it collapses can damage the cam lobe. The lifter remaining stationary or with limited movement causes the cam lobe to wear. The lobe is lubed by leakage of oil from around the lifter body and if this leakage is diminished this can ruin the cam.At its lowest point, this nearly exposes the oil hole which feds oil into the lifter bore and the lifter body. But the body's oil hole is out of position so no oil can flow into it. But this as I said nearly exposes the oil hole and copious amount of oil comes out and floods the cam lifter face against which the cam lobe is pressing.
To give an optimistic example of Fixes, the Lifter issue is interesting.
Apparently the lifters can be dismantled,clean the ball, check the spring, inspect for cracks ,refill with oil and refit. The problem is I think this is an 'engine-out' job . So even if you have no lifter noise ,cleaning and inspecting them should(?) be on the to-do list when you have the engine out and apart. It would be a pity to miss this and then get lifter noise after you've re-installed the engine.
I wish the Variocam units were as easy/inexpensive to service as a dirty lifter..[/quote]
but instead replaces them. All on that bank. This follows the factory repair guidelines. The concern is there are bad batch of lifters so to reduce the possibility of a bring back and an even worse customer experience -- I heard of one new owner refusing to accept his new 996 back after it had its lifters to replace so even just having one or some get noisy and replacing them doesn't always leave a customer with the warm fuzzies... -- the factory says to replace all lifters.
Out of warranty, of course, an owner could clean and replace and hope the lifter wasn't damaged and thus compromised and would cause problems later on.
Also, I was told the other day that sometimes the lifter if it collapses can damage the cam lobe. The lifter remaining stationary or with limited movement causes the cam lobe to wear. The lobe is lubed by leakage of oil from around the lifter body and if this leakage is diminished this can ruin the cam.At its lowest point, this nearly exposes the oil hole which feds oil into the lifter bore and the lifter body. But the body's oil hole is out of position so no oil can flow into it. But this as I said nearly exposes the oil hole and copious amount of oil comes out and floods the cam lifter face against which the cam lobe is pressing.