| Author |
Message |
magoo (Magoo)
| | Posted on Friday, October 12, 2001 - 11:43 pm: | |
Peter, I think he is referring to shim wear. He is asking if overheating was the cause. In my opinion ,no, not changing the oil at proper intervals or excessive mileage and no service could have a bearing on it. If coolant was in the oil for a long period of time to wear the shims I think his problems would be much greater. However let me say, as I said before, that my opinion would never win a court case for you. Too many varibles. |
'75 308 GT4 (Peter)
| | Posted on Friday, October 12, 2001 - 11:30 pm: | |
Check cylinder head warpage. Any coolant in the oil and vice-versa?
Are you sure your mechanic meant to say "excessive valve SHIM wear"? A realistic problem. |
Eric de Back (Eric328)
| | Posted on Friday, October 12, 2001 - 7:05 pm: | |
well, when I said valve spring wear, I meant that I was told they were "out of tolerance". Could excessive engine heat cause this, Herbert? I have had a couple of very hot engines which have probably led to the gasket degrading, the car losing more coolant and more engine overheating.
Wonder if it's caused other things aswell? |
Michael A. Niles (Man90tr)
| | Posted on Friday, October 12, 2001 - 6:10 am: | |
I was about to write the same thing as Herbert. Airplanes are worse. I have had valves wear out of limits in 500 hours and then some last 1500 hours and test as brand new. Other go as far as 2000 hours. No way to tell.
If the car was running great then don't worry about it. Just do the maintenance and drive on happily. |
Herbert Edward Gault (Irfgt)
| | Posted on Friday, October 12, 2001 - 5:34 am: | |
There is no way anyone can tell a vehicles actual mileage by valve spring wear. A valve spring does not actually wear, but can loose tension or break, which can be caused by excessive heat that could have occured in the first 5 miles in the car's life. I have seen valve springs with 500,000 miles on them that tested as good as new. |
magoo (Magoo)
| | Posted on Thursday, October 11, 2001 - 10:44 pm: | |
Eric, I hate to say it, but unless you have documented proof you are helpless. Try proving "wear factor" in a court of law. Have you researched the VIN. number? Maybe you could find a mileage rollback there. Otherwise, Oh Well. |
Eric de Back (Eric328)
| | Posted on Thursday, October 11, 2001 - 10:33 pm: | |
Any ideas what I can do?
I've had my car, a 1989 328GTS 28000km, for just under a year. Last month my mechanic started work on a head gasket replacement job and recons, with the engine open and based on the valve spring wear, that the car has done more than 28000 odometer kms. Given the state of the rest of the car, 28000km isn't hard to believe but engine wear, I guess, doesn't lie does it? |
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