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911nut 911nut is offline
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Join Date: May 2001
Location: Michigan
Posts: 2,511
Originally Posted by 911st View Post
you get a factory hardened cam with full diameter lobes that keeps the rockers at the correct angle to the cam.
Keith, almost all production cams are made of chilled iron. In other words, they are thru hardened. When the new base circle is ground into the cams, they are just as hard as when they came from the factory. Then the only worry is if there is enough adjustment with the jack screw. According to those who re-grind 911 cams, there is.
Now if a cam is cut from steel billet material, it will need a surface hardening treatment.
Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 04-22-2010, 04:11 PM
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