PART# 216821 OR 494071. Andrews 216821 – 21N Twin 88 Conversion cams – 99-06 Twin Cam (except 06 Dyna). ANDREWS TWIN CAM 88 UPGRADE KIT. Eliminate spring powered chain adjusters. Engines converted to 2007 type cams and chain drives will have higher output due to less power loss from older spring powered chain tensioners. Instead of the original spring adjusters, new roller cam chains use engine oil pressure to maintain proper chain tension. Designed for use with stock Harley Davidson hydraulic lifters. Installing 2007 roller cam chains on earlier engines requires series N Andrews camshafts. Stock Harley Davidson parts are required: 2007 cam support plate, 2007 or later oil pump, cam sprockets and chains and both hydraulic chain adjusters. EZ-install pushrods do not require removal of gas tanks or rocker boxes when installing bolt-in camshafts. Bolt-in cam more torque for all around riding with heavy bikes, stock compression ratios and stock pistons. Specification readings are as follows, with Timing and Duration measured at. Intake Timing Open (in degrees): 10. Intake Timing Closed (in degrees): 30. Intake Valve Duration (in degrees): 220. Exhaust Timing Open (in degrees): 40. Exhaust Timing Closed (in degrees): 08. Exhaust Valve Duration (in degrees): 228. Fits the following Harley Davidson models. The item “Andrews 216821 21N Twin Cam 88 Conversion Cams Kit Upgrade 99-06 Roller Chain” is in sale since Wednesday, November 18, 2015. This item is in the category “eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Other Engines & Engine Parts”. The seller is “americanclassicmotors” and is located in Zieglerville, Pennsylvania. This item can be shipped worldwide.
- Manufacturer Part Number: 216821
- Brand: ANDREWS