dapiper Posted November 23, 2005 Share Posted November 23, 2005 Observed wierd power band on my custom turbo. Peak torque occurs 300 RPM lower at 4400 and power maxes out at 5300 RPM and is flat up to 6000. This cam used to be 4700/6200 RPM for peak torque and power. Peak torque and power were always equal, i.e. 330 ft-lb and 330 RWHP at 13 psig boost. Now peak power is only 300 with the flat curve. Anyone ever observed this limitation and what can cause it? Increased AFR from 10.8 to 11.8 and improved midrange but did not change max figures. Acts like some big restriction. Air mass sensor maxed out at 5300 RPM also whereas used to keep increasing. Could cam be that retarded? Cam set at 0 adv, but has been refurbished and using adj cam sprocket. TDC chks OK. Maybe cam has been ruined when refurb? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.