E... 55 Report post Posted October 10, 2022 New SHRICK 284/272 performance camshaft to suit m20b20, b23,b25 Nice bump in bower band, noticeable change in idle (lumpy) Purchased from BAR-TEK Motorsport Germany Still in box. $900. could potentially be interested in a trade for larger degree cam. Pickup Pukekohe Quote Share this post Link to post Share on other sites
Neil McCauley 248 Report post Posted October 14, 2022 Do you know if this needs valvetrain upgrades, and do you know the duration? Quote Share this post Link to post Share on other sites
E... 55 Report post Posted October 15, 2022 On 10/14/2022 at 9:33 PM, Neil McCauley said: Do you know if this needs valvetrain upgrades, and do you know the duration? M20 284/272 cam specs: Intake Lobe Duration: 284° Exhaust Lobe Duration: 272° Intake Valve Lift: 11.4mm Exhaust Valve Lift: 11.0mm Intake Valve Lift @ TDC: 2.2mm Exhaust Valve Lift @ TDC: 1.7mm Valve Timing (IO-IC-EO-EC): 32-72 66-26 Intake Valve Clearance: 0.25mm (0.0098") Exhaust Valve Clearance: 0.25mm (0.0098") Id suggest shrink sports double vavle springs, and perhaps adj timing gear. Quote Share this post Link to post Share on other sites
