When to rebuild/re-fresh Blown 540s?
#11
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Leakdown test tells it all, I rebuild;ld my 1000 hp blown 540 every 100-120 hours BUT I am running 13-14 psi of boost, I find leakdown starting to get where it needs to be re-rung plus bearings, lifters and valve springs at my interval but again, a much higher amount of stress and wear, fwiw, Smitty