Who runs 918's over 600lift???
05-31-2005, 05:26 AM
#2
TECH Senior Member
05-31-2005, 07:53 AM
#4
TECH Senior Member
You can run into PTV clearance issues.
IMO if you want a little more lift, go with 1.7 Crane "variable lifts" rockers. You'll gain down low in the lifts without affecting your ptv up high.
Cranes start at 1.79 ratio>.200/.300 where they go to 1.72, then back > 1.79 at closing.
IMO if you want a little more lift, go with 1.7 Crane "variable lifts" rockers. You'll gain down low in the lifts without affecting your ptv up high.
Cranes start at 1.79 ratio>.200/.300 where they go to 1.72, then back > 1.79 at closing.
Last edited by PREDATOR-Z; 05-31-2005 at 07:58 AM.
05-31-2005, 06:04 PM
#5
Crane's PDF showed the results for an aggressive SBC shaft rocker system. The claims for the individual rollers seem more nebulous. It seems that the ratio advantage is gone by .200 lift and going down rapidly from .100 to .200. Also, PTV is likely to be an issue at .100 lobe lift, just where the Crane rockers a struting their stuff.
You will need to check PTV...as many posts have shown. However, I would spring for a T&D or Jesel adjustable shaft rocker.
You will need to check PTV...as many posts have shown. However, I would spring for a T&D or Jesel adjustable shaft rocker.