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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.
John Dougherty
Dougherty Racing Cams
Old 07-21-2004, 04:35 PM
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