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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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09-10-2021, 12:47 PM | #113 |
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09-10-2021, 01:50 PM | #114 | |
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09-10-2021, 02:12 PM | #115 | |
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I did see a You Tube video where deposits on the valve stem caused valve float in a street driven Corolla. I wouldn't think that's likely on a track driven engine. |
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09-10-2021, 11:05 PM | #116 | |
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11-06-2021, 08:13 PM | #117 |
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Valve float is caused by a few things. Spring harmonics or spring resonate frequencies are the main reasons. Its basically springs that are very well controlled, no fault of the valve or rpms. Its just physics. The beehive spring addresses this problem better than any other solution as far as I know. Here is a good video on spring technology. If its too long for you, skip to about 20 minutes to see the springs in action. But watching the entire video explains a alot
Last edited by Rabrooks; 11-06-2021 at 08:27 PM. |
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