Once you get them to 0 lash, you go 1 turn. I went 1 turn on mine and they ended up too tight I had to go in and re adjust and go 3/4 turn. If the rockers are too tight the motor will not rev and have any power you will need to re-adjust them. Here's a link to Crane Cams Installation Instruction of Alum Stud Mount Rocker arms.
http://64.90.9.168/cranecams/pdf/425e.pdf
If that doesn't work go to
www.cranecams.com installation instructions
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[This message has been edited by Rick 91GT (edited 05-13-2001).]