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camgrinder camgrinder is offline
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Join Date: Feb 2004
Location: California
Posts: 921
Thats a tough question. I recommend the retainers and valve springs for camshafts that require them. I doubt an 8000 RPM 2.7 litre is going to last 100k.
I would recommend them on a street 930 that shifts at 7000 RPMs with a set of Evo camshafts. We have been selling Ti retainers for 911 Porsches for at least 14 years, and I have never even heard about a retainer breaking. We used to make chrome moly retainers for our old design valve springs but the demand was so low we discontinued them.
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John Dougherty
Dougherty Racing Cams
Old 07-21-2004, 04:35 PM
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