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[Svo] SVO - Roller cams {1}


Could somebody out there say a few words about why a roller cam can't be
designed with the same follower characteristics as a "tappet" cam?  In other
words, why is it that a roller cannot be made to provide the same valve
opening and closing characteristics as the best performing non-roller cams,
with the added benefits that accrue from the reduced friction?  Is it the
added weight or maybe the lack of distance within which to place a good
roller or what?

(bitchin' 86 white SVO)