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techtalk:evo:engmech09c [2021/07/28 04:41] – [Evo Motor Mount Specs] hippysmacktechtalk:evo:engmech09c [2024/05/31 00:49] (current) – ixl2relax
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 ====== Evo Motor Mount Specs ====== ====== Evo Motor Mount Specs ======
  
-The 1986-1990 FSM lists no torque specs for the rear mounts or lower front mounts. \\+The 1986-1991 FSMs list no torque specs for the rear mounts or lower front mounts. \\
 There is only one spec in the 79-85 FSM (rear motor mounting bolt-nut: 16 to 24 ft lbs) and the 86-90 rear mount is the same part from 84-90. \\ There is only one spec in the 79-85 FSM (rear motor mounting bolt-nut: 16 to 24 ft lbs) and the 86-90 rear mount is the same part from 84-90. \\
 For the rest, there are general "Torque Value" charts in the front of the service manual. ((1986-1990 HD Sportster FSM pg 1-8)) \\ For the rest, there are general "Torque Value" charts in the front of the service manual. ((1986-1990 HD Sportster FSM pg 1-8)) \\
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 Below is a list of torque values from the different year model FSMs. \\ Below is a list of torque values from the different year model FSMs. \\
  
-^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}|||||| +^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}|||||||| 
-|  Torque Specs in HD Service Manuals  |||||| +|  **1986-2003 Motor Mount Torque Specs in HD Service Manuals**  |||||||| 
-|  1986-1990 Engines  |||||| +|Point of \\ Torque|SAE|Metric|Year Model|Point of Torque|SAE|Metric|Year Model| 
-|Upper Front Mount to Head|25-30 ft-lbs ((1986-1990 HD Sportster FSM pg 3-3))|34-40 Nm|Upper Front Mount to Frame|30-35 ft-lbs ((1986-1990 HD Sportster FSM pg 3-3))|40-47 Nm| +|Rear Mount \\ Fasteners|16-24 ft-lbs \\ 25-30 ft-lbs|21-33 Nm \\ 34-41 Nm|1985→1990 \\ 1994-2003|Neg Cable Nut \\ to Rear Mount Stud|68-80 in-lbs|7-10 Nm|1994-2003|  
-|Top Front Mount to Heads|25-30 ft-lbs ((1986-1990 HD Sportster FSM pg 3-3))|34-40 Nm|Top Front Mount to Frame|30-35 ft-lbs ((1986-1990 HD Sportster FSM pg 3-3))|40-47 Nm|+|Lower Front Mount \\ to Engine|25-30 ft-lbs|34-41 Nm|1994-2003| Lower Front Mount \\ to Frame|25-30 ft-lbs|34-41 Nm|1994-2003| 
 +|Upper Front Mount \\ to Head|21-27 ft-lbs \\ 25-30 ft-lbs|28-36 Nm \\ 34-41 Nm|1986-1989 \\ 1990-2003|Upper Front Mount \\ to Frame|30-35 ft-lbs |40-47 Nm|1986-2003| 
 +|Top Center Mount \\ to Heads|21-27 ft-lbs \\ 25-30 ft-lbs|28-36 Nm \\ 34-41 Nm|1986-1989 \\ 1990-2003|Top Center Mount \\ to Frame|30-35 ft-lbs|41-47 Nm|1986-2003|
  
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 ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}|||||||| ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}||||||||
-|  SAE  Torque Value Chart per Bolt Type  ||||||||+|  **SAE  Torque Value Chart per Bolt Type**  ||||||||
 |Bolt size|SAE 2 \\ 74,000 psi \\ Low carbon|SAE 5 \\ 120,000 psi \\ Medium carbon \\ heat treat|SAE 7 \\ 133,000 psi \\ Medium carbon \\ alloy|SAE 8 \\ 150,000 psi \\ Medium carbon \\ alloy|Socket head \\ cap screw \\ 160,000 psi \\ High carbon \\ quenched tempered|Socket head \\ set screw \\ 212,000 psi \\ High carbon \\ quenched tempered|Studs| |Bolt size|SAE 2 \\ 74,000 psi \\ Low carbon|SAE 5 \\ 120,000 psi \\ Medium carbon \\ heat treat|SAE 7 \\ 133,000 psi \\ Medium carbon \\ alloy|SAE 8 \\ 150,000 psi \\ Medium carbon \\ alloy|Socket head \\ cap screw \\ 160,000 psi \\ High carbon \\ quenched tempered|Socket head \\ set screw \\ 212,000 psi \\ High carbon \\ quenched tempered|Studs|
 |#6|-|-|-|-|-|9 in/lb|Use \\ SAE \\ 2,5 and 8 \\ values \\ when \\ grade \\ is known \\ with nut \\ and \\ sufficient \\ strength| |#6|-|-|-|-|-|9 in/lb|Use \\ SAE \\ 2,5 and 8 \\ values \\ when \\ grade \\ is known \\ with nut \\ and \\ sufficient \\ strength|
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 ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}|||||||| ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}||||||||
-|  Metric  Torque Value Chart per Bolt Type  ||||||||+|  **Metric  Torque Value Chart per Bolt Type**  ||||||||
 |Bolt size|SAE 2 \\ 5,202 kg/cm² \\ Low carbon|SAE 5 \\ 8,436 kg/cm² \\ Medium carbon \\ heat treat|SAE 7 \\ 9,350 kg/cm² \\ Medium carbon \\ alloy|SAE 8 \\ 10,545 kg/cm² \\ Medium carbon \\ alloy|Socket head \\ cap screw \\ 11,248 kg/cm² \\ High carbon \\ quenched tempered|Socket head \\ set screw \\ 14,902 kg/cm² \\ High carbon \\ quenched tempered|Studs| |Bolt size|SAE 2 \\ 5,202 kg/cm² \\ Low carbon|SAE 5 \\ 8,436 kg/cm² \\ Medium carbon \\ heat treat|SAE 7 \\ 9,350 kg/cm² \\ Medium carbon \\ alloy|SAE 8 \\ 10,545 kg/cm² \\ Medium carbon \\ alloy|Socket head \\ cap screw \\ 11,248 kg/cm² \\ High carbon \\ quenched tempered|Socket head \\ set screw \\ 14,902 kg/cm² \\ High carbon \\ quenched tempered|Studs|
 |2|-|-|-|-|-|-|Use \\ SAE \\ 2,5 and 8 \\ values \\ when \\ grade \\ is known \\ with nut \\ and \\ sufficient \\ strength| |2|-|-|-|-|-|-|Use \\ SAE \\ 2,5 and 8 \\ values \\ when \\ grade \\ is known \\ with nut \\ and \\ sufficient \\ strength|

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