Melling Oil Pump Relief Springs

Looking for information on oil pump relief valve springs? What color spring denotes a certain pressure?  Perhaps this will help:

Melling Oil Pump Relief Springs

About Roger

Driver of our '57 Chev from 1972-2019, Vietnam veteran (A Troop, 3/17th Air Cavalry Scout helicopter Line Chief and later Cobra Periodic Inspection team leader), retired ASE rated automotive mechanic. Roger became involved in drag racing during his high school days and after his stint in the Army ran E & F/MP [Modified Production] here in Division 6 before switching to bracket racing when the '57 became obsolete for class racing. He often raced at Puyallup, Kent-Pacific Raceways, Bremerton, Portland & the original Mission, B.C. track.
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