| 1. | The dual valve springs are of coaxial type and made out of titanium.
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| 2. | In 1935 the Matchless / AJS hairpin valve springs made their first appearance.
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| 3. | The new heads are equipped with stronger valve springs and larger fuel injectors.
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| 4. | He founded Waterloo Valve Spring Compressor Co . in 1922.
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| 5. | He led 170 of 180 laps before a broken valve spring ended his day.
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| 6. | The first commercial implementation was done in the United States on automotive valve springs.
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| 7. | The camshaft is held in position using valve spring pressure.
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| 8. | Sure enough, Burton broke a valve spring and finished 30th.
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| 9. | We got caught up in a few wrecks and broke a valve spring one time.
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| 10. | The only flaws in the KL-ZE design were the weaker valve springs on the intake valves.
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