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techtalk:evo:engmech01g [2022/04/01 22:47] – [Machining Date (2004-up)] hippysmacktechtalk:evo:engmech01g [2022/04/04 14:17] (current) – [2004-E2007 Covers] hippysmack
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 |{{:techtalk:ih:engmech:1985_xl-xls_cam_cover_25208-84a_by_nitrofrankie_go-fast_hd_pic4.jpg?direct&300|}}|{{:techtalk:evo:engmech:1986-1990_sportster_cam_cover_25219-86_by_deadpartsmc_pic5.jpg?direct&300|}}|{{:techtalk:evo:engmech:1986-1990_sportster_cam_cover_date_codes.jpg?direct&300|}}| |{{:techtalk:ih:engmech:1985_xl-xls_cam_cover_25208-84a_by_nitrofrankie_go-fast_hd_pic4.jpg?direct&300|}}|{{:techtalk:evo:engmech:1986-1990_sportster_cam_cover_25219-86_by_deadpartsmc_pic5.jpg?direct&300|}}|{{:techtalk:evo:engmech:1986-1990_sportster_cam_cover_date_codes.jpg?direct&300|}}|
  
-===== Machining Date (2004-up) =====+===== Machining Dates (2004-up) =====
 2004-up cam covers have a several numbers pin stamped on the inside of the cover. \\ 2004-up cam covers have a several numbers pin stamped on the inside of the cover. \\
 Original location was on the rear near the oil tank breather fitting. \\ Original location was on the rear near the oil tank breather fitting. \\
 Later covers were stamped on the inside front in the round portion behind the oil filter mount. \\ Later covers were stamped on the inside front in the round portion behind the oil filter mount. \\
-There are 2 sets of numbers with the first being the month, day and year followed by a set of unknown numbers. \\ +There are 2 sets of numbers with the first being the month, day and year of machining (holes drilled, bushings installed/reamed etc.) \\ 
-The unknown numbers may be production, control or operator numbers and possibly a mix of these. \\+The next set of numbers are for unknown reasons at this time. \\ 
 +The unknown numbers may be production, control or operator numbers and possibly a mix of the same. \\
  
 2004-2006 covers also have a circled date stamp that was faded out for model season 2007. \\ 2004-2006 covers also have a circled date stamp that was faded out for model season 2007. \\
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 ====== 2004-Up Cam Covers ====== ====== 2004-Up Cam Covers ======
-**Casting number change**: \\+There are only 4 cam cover part number changes on 2004-2016 Sportsters, and most likely beyond and not counting XR models. \\ 
 +They are the same cover with different finishes: polished, chrome, black or gray. \\ 
 +The XR cover is a completely different design. \\  
 +Figuring that there was a casting/design change in 2007, that leaves a total of 2 versions of these covers not counting surface finish or XRs. \\ 
 +  
 +**2007 Casting number change**: \\
 The same casting design (25230-04) was used from 2004 through an early 2007 running design change to casting# (25230-04A). \\ The same casting design (25230-04) was used from 2004 through an early 2007 running design change to casting# (25230-04A). \\
 The casting number change has a direct correlation to the removal of casting bumps in the feed galley of the cover. \\ The casting number change has a direct correlation to the removal of casting bumps in the feed galley of the cover. \\
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 |{{:techtalk:evo:engmech:2007e_sportster_cam_cover-_inside_by_deadpartsmc.jpg?direct&300|}}| |{{:techtalk:evo:engmech:2007e_sportster_cam_cover-_inside_by_deadpartsmc.jpg?direct&300|}}|
  
-    +===== 2004-E2007 Covers ===== 
-  + 
 +===== L2007-Up Covers ===== 
  
 \\ \\

Trace: • EVO: Engine Mechanicals - Sub-01G • REF: Tools - 123