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Old 11-30-2014 | 08:51 PM
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I was thinking I'd seen them on suspension coils on a high end auto, BMW or MB maybe? Basically as the coil compresses it tries to rotate, but there's more resistance in compression or loading than unloading. By adding the bearing you get a smoother cycle.

I'ze just wondering if anyone had ever built some heads like that!
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Old 11-30-2014 | 09:28 PM
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Most of the overpriced junk Bmw and Mercedes I work on have air hydraulic suspension. Just curious cause I've never seen what you are describing.
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Old 11-30-2014 | 09:41 PM
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Originally Posted by Cole2534
I was thinking I'd seen them on suspension coils on a high end auto, BMW or MB maybe? Basically as the coil compresses it tries to rotate, but there's more resistance in compression or loading than unloading. By adding the bearing you get a smoother cycle.

I'ze just wondering if anyone had ever built some heads like that!
They (aftermarket for drag race, circle track, etc)have bearings that press in place of control arm bushings. Is that possibly what you are thinking of ?
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Old 12-01-2014 | 05:53 AM
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Maybe I am just a crazy person. Lol, oops...
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Old 12-01-2014 | 06:11 AM
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How are these springs rotating without a bearing and without wearing the head down?

https://www.youtube.com/watch?v=nsa6kq-qqIE#t=165
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Old 12-01-2014 | 07:34 AM
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Good question. Is the valve rotating in its seat a little with each cycle?
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