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camgrinder camgrinder is offline
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Join Date: Feb 2004
Location: California
Posts: 921
The factory spring typically installs at 60+/- lbs. The performance spring installs at 90 lbs and the racing spring at 110 lbs.
I do not make a Ti retainer for the performance springs. The factory retainer works fine.

The idea higher spring pressures cause premature wear or failures is valid. However at these spring pressures (110 lbs @ installed height) I am not concerned with these types of faulures.
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John Dougherty
Dougherty Racing Cams
Old 11-15-2005, 03:09 PM
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