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So at a 30:1 compression ratio (assuming temperature of the compressed gas stays at 60f which ot won't), the spring will need to be able to resist (425 psi x (piston area)in2) roughly 4500lbs depending on piston size and the effective dynamic compression ratio.
Is that math right? Seems high.
If that is accurate, you're certainly not using a mechanical spring.
I re-ran some numbers using 17.3:1 compression of a cummins 6.7 and 15 psig of boost, roughly 2700 lbs of force.
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Last edited by ksa8907; 03-16-2017 at 09:16 PM..
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