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#1
11-09-2025, 09:16 PM
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Correct. The spring closes the valve. Exhaust pressure opens it. When the spring gets hot the valve could sit any place though not fully closed.
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#2
11-10-2025, 11:57 AM
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Ali Express is a source for bimetallic spring material. I could not find a domestic supplier. You could buy a coil of the stuff and wind your own spring. Would probably take some trial and error to get what your looking for. But for $20.00 might be worth the effort.
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