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Registered
Join Date: May 2005
Location: Christchurch, Zealand
Posts: 21
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Cam regrind ??
Hi all,
do you need to harden the cams after a regrind ?? 1 of my lobes was worn 1/4" and had to be rebuilt, couple of other had pitting on the lobes cheers hayden Pearce 74 911 targa
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Hayden Pearce |
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05-26-2005, 07:10 PM
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Registered
Join Date: Feb 2004
Location: California
Posts: 926
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Porsche 911 cams are chill cast. The factory hardness goes deep enough to regrind and remove the normal pitting. The lobe worn 1/4 inch would have to be welded. The common welding material finishes at 58rc hardness. very close to the factory spec.
No additional heat treat is required.
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John Dougherty Dougherty Racing Cams |
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05-26-2005, 10:01 PM
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Banned
Join Date: Feb 2003
Location: So California
Posts: 3,787
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Don't forget to have the cam followers resurfaced or you will be regringing cams very soon.
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05-27-2005, 10:50 AM
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