Differences
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| techtalk:evo:transfinal02 [2019/01/09 02:49] – ↷ Links adapted because of a move operation ixl2relax | techtalk:evo:transfinal02 [2024/01/09 02:00] (current) – hippysmack | ||
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| ====== EVO: Transmission & Final Drive ====== | ====== EVO: Transmission & Final Drive ====== | ||
| - | ^Click here for tips on [[techtalk: | + | ^Click here for tips on [[techtalk: |
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| - | | 1990 4 Speed Transmission ((photos by Dave 76 of the XLFORUM | + | | 1990 4 Speed Transmission ((photos by Dave 76 of the XLFORUM |
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| - | | 1990 4 Speed Transmission ((photos by Dave 76 of the XLFORUM | + | | 1990 4 Speed Transmission ((photos by Dave 76 of the XLFORUM |
| ====== Specifications ====== | ====== Specifications ====== | ||
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| |Spring Force|Engaged: | |Spring Force|Engaged: | ||
| |Clutch shell bearing on clutch gear (loose)|0.0000 in-0.0010 in. / (0.0254 mm)| | |Clutch shell bearing on clutch gear (loose)|0.0000 in-0.0010 in. / (0.0254 mm)| | ||
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| ===== Primary Drive (engine to transmission) ===== | ===== Primary Drive (engine to transmission) ===== | ||
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| |The MoCo publishes for 1986-1990 ((1986-1990 HD Sportster FSM pg 2-1))|1.5 pints (24 oz), (710 ml)| | |The MoCo publishes for 1986-1990 ((1986-1990 HD Sportster FSM pg 2-1))|1.5 pints (24 oz), (710 ml)| | ||
| * This quantity is for a dry application. When changing oil, use your own judgement not to overfill as you won't need a full 1.5 pints to re-fill the oil. | * This quantity is for a dry application. When changing oil, use your own judgement not to overfill as you won't need a full 1.5 pints to re-fill the oil. | ||
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| ===== Transmission ===== | ===== Transmission ===== | ||
| * Internal Gear Ratios are the number of clutch gear revolutions to drive the mainshaft sprocket one revolution. | * Internal Gear Ratios are the number of clutch gear revolutions to drive the mainshaft sprocket one revolution. | ||
| * Overall Gear Ratios are the number of engine revolutions to drive rear wheel one revolution. | * Overall Gear Ratios are the number of engine revolutions to drive rear wheel one revolution. | ||
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| ^Year (all models) Internal Gear Ratios^^^^^ | ^Year (all models) Internal Gear Ratios^^^^^ | ||
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| |1987-1990|9.12|6.59|4.98|3.97| | |1987-1990|9.12|6.59|4.98|3.97| | ||
| + | ===== Clutch Gear Mainshaft Ball Bearing ===== | ||
| - | + | 1986-1990 Mainshaft Ball Bearing - Used on All Models ((86-90 HD Sportster Parts Catalog)) | |
| - | + | * 9025A - Ball Bearing | |
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| ===== Final Drive (Trans to Wheel) ===== | ===== Final Drive (Trans to Wheel) ===== | ||
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| ^Year^Domestic Model(s)^Transmission Sprocket^Rear Wheel Sprocket^Ratio^ | ^Year^Domestic Model(s)^Transmission Sprocket^Rear Wheel Sprocket^Ratio^ | ||
| |1986-1990|All Models((1986-1990 HD Sportster FSM pg 6-1))|21 Teeth|48 Teeth|2.29: | |1986-1990|All Models((1986-1990 HD Sportster FSM pg 6-1))|21 Teeth|48 Teeth|2.29: | ||
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| ===== Fastener Torque Specs ===== | ===== Fastener Torque Specs ===== | ||
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| |Mainshaft nut locking screw|50 - 60 in-lbs.| | |Mainshaft nut locking screw|50 - 60 in-lbs.| | ||
| |Mainshaft nut|35 - 65 ft-lbs.| | |Mainshaft nut|35 - 65 ft-lbs.| | ||
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| * Mainshaft fourth gear and second gear: .040 min. - .080 in. max. | * Mainshaft fourth gear and second gear: .040 min. - .080 in. max. | ||
| * Mainshaft third gear and second gear: .040 min. - .080 in. max. | * Mainshaft third gear and second gear: .040 min. - .080 in. max. | ||
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| ===== Countershaft Group ===== | ===== Countershaft Group ===== | ||
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| * Countershaft end bearings: Retained needle roller bearings | * Countershaft end bearings: Retained needle roller bearings | ||
| * Countershaft needle bearing journal diameter: | * Countershaft needle bearing journal diameter: | ||
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| * Countershaft second gear and third gear: .040 - .080 in. max. | * Countershaft second gear and third gear: .040 - .080 in. max. | ||
| * Countershaft end play: .004 - .015 in. max. | * Countershaft end play: .004 - .015 in. max. | ||
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| ==== Countershaft Low Gear Changes ==== | ==== Countershaft Low Gear Changes ==== | ||
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| ^Countershaft Low Gear -17T^Change Year^Model(s)^Notes^ | ^Countershaft Low Gear -17T^Change Year^Model(s)^Notes^ | ||
| |35760-84A \\ Late 1984-1990 ((1979-1985 HD Sportster Parts Catalog pg 51)) ((1986-1990 HD Sportster Parts Catalog pg 37))|Late 1984| | |35760-84A \\ Late 1984-1990 ((1979-1985 HD Sportster Parts Catalog pg 51)) ((1986-1990 HD Sportster Parts Catalog pg 37))|Late 1984| | ||
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| ===== Discussion ===== | ===== Discussion ===== | ||
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| 1986-90 Evo Sportsters: What every owner should know but were afraid to ask\\ | 1986-90 Evo Sportsters: What every owner should know but were afraid to ask\\ | ||
| - | An [[http:// | + | An [[https://www.xlforum.net/ |
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