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11-14-2018, 11:55 AM | #1 |
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Valve springs
So, reading some of the many 86 valve spring recall threads, got me thinking...
...in a inline, slant inline, V, or W engine design, if a valve spring breaks, it can "drop a valve". What about in a boxer engine? does it "toss the valve to the side"? |
11-14-2018, 12:34 PM | #2 |
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I asked this same question in one of those threads and I believe someone told me that the FA20 is an interference engine so the pistons could uppercut the valves if the timing is off (or if the valve springs fail).
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11-14-2018, 01:41 PM | #3 | |
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Quote:
We didn't have this "valve dropping" problem back in the flathead days - humfrz |
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11-14-2018, 01:54 PM | #5 |
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I have a valve story for you. Once I was helping a friend tear down his blown V8 in his boat (wife and he did speed skiing competitions). We took one head off and one cylinder was missing a valve. It was just gone. The valve got sucked all the way to a cylinder on the other side. Block and everything was mangled.
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11-14-2018, 02:19 PM | #6 | |
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Quote:
humfrz |
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11-14-2018, 02:49 PM | #7 |
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11-14-2018, 05:04 PM | #8 |
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The wormhole geometry going from initial conditions to final end point are doing my head in.
Was Windows vers.xx in the block involved?
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11-21-2018, 02:49 PM | #9 |
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I think I'll go back to the term we used at a previous employer, when a jet engine had a blade failure, and say that the "valve liberated itself".
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The Following User Says Thank You to Gunman For This Useful Post: | Tcoat (11-21-2018) |
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