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Originally Posted by Excaliber
...if you use solid ROLLER lifters you can expect a shortened life for the rollers.
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This is the key, solid rollers vs hydraulic rollers. Hydraulic rollers work fine even in older engines assuming they can run hydraulics. The solid roller lifters evidently get beat up because of the lash. Crower makes HIPPO solid rollers, which force feed
oil to the rollers, but again the engine has to be able to run hydraulics, as that's where the
oil for the rollers comes from. Other companies also make pressure-fed solid rollers, and if you want a solid roller cam, these are the only ones besides some ultra-expensive types that will last on a street car; that's why most run hydraulic rollers.
Dan