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07-07-2014, 11:03 PM | #1 |
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valve spring change?
Forgot to ask this, at 100k would changing valve springs be good investment given these high revving motors must stress springs? I've spent a lot of time above 7500rpms. Is this a big job?
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07-08-2014, 01:45 PM | #3 |
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At 100k miles, you are well over 10^8 cycles on a valve spring. As this is beyond the fatigue limit of most steels, it is very improbable that a spring would ever fail. Any manufacturing flaws would have either caused a failure well before 100k, or will remain dormant for the balance of the life of the engine.
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07-08-2014, 02:18 PM | #4 | |
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Quote:
Most spring failures I've seen have been on lower mileage cars.
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07-08-2014, 06:56 PM | #8 |
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07-28-2015, 03:58 PM | #9 |
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My car has something going on in cylinder 7 and they are opening it up today at 22k miles. I think it may be a broken valve spring considering it wasn't ignition coil or fuel injector. Would be totally lame if it were. I haven't had my car since Friday and I I'm losing my mind in this loaner.
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