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techtalk:ih:carb01 [2022/04/19 02:57] hippysmack [Sportster Keihin Butterfly Carburetors by Year Model] |
techtalk:ih:carb01 [2022/09/29 21:21] hippysmack [Heat Spacer / Insulator Block] |
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===== Mikuni XR-750 racing engines only ===== | ===== Mikuni XR-750 racing engines only ===== | ||
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**1972-1980** | **1972-1980** | ||
- | Through 1980, XR-750 engines were equipped with a 36mm Round Slide((http://xlforum.net/forums/showthread.php?t=2006195&page=3)) Mikuni. Below is a chart of the standard jetting of these carbs. Final jetting may vary. ((1972-2003 HD XR-750 Service Manua pg 39)) | + | Through 1980, XR-750 engines were equipped with a 36mm Round Slide((http://xlforum.net/forums/showthread.php?t=2006195&page=3)) Mikuni. Below is a chart of the standard jetting of these carbs. Final jetting may vary. ((1972-2003 HD XR-750 Service Manual pg 39)) |
+ | ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}||||||| | ||
|36mm Carb Types|Main|Pilot|Needle|Needle Jet|Slide|Air Correction Jet| | |36mm Carb Types|Main|Pilot|Needle|Needle Jet|Slide|Air Correction Jet| | ||
|VM-36-1 \\ VM-36-4 \\ VM36/39|240|25|6F5|159-P4|2.0|1.0| | |VM-36-1 \\ VM-36-4 \\ VM36/39|240|25|6F5|159-P4|2.0|1.0| | ||
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Engine upgrades prompted HD to recommend the use of Mikuni's 38mm Flat Slide carburetor (not supplied with the engine kit). Recommended jetting chart below.((1972-2003 HD XR-750 Service Manua pg 39)) | Engine upgrades prompted HD to recommend the use of Mikuni's 38mm Flat Slide carburetor (not supplied with the engine kit). Recommended jetting chart below.((1972-2003 HD XR-750 Service Manua pg 39)) | ||
- | |38mm Carb Types|Main|Pilot|Needle Jet|Slide| | + | ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}|||||| |
+ | |38mm Carb Types|Main|Pilot|Needle Jet|Slide|| | ||
|TM38-85 (47mm spigot dia.) \\ TM38-86 (43mm spigot dia.)|210-260|20-25|6FM46|Q0,Q2,Q4|4.0| | |TM38-85 (47mm spigot dia.) \\ TM38-86 (43mm spigot dia.)|210-260|20-25|6FM46|Q0,Q2,Q4|4.0| | ||
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So any of these 3 sizes will work. | So any of these 3 sizes will work. | ||
+ | ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}|| | ||
|**Mikuni** (**XR-750 Racing Engines Only**)|| | |**Mikuni** (**XR-750 Racing Engines Only**)|| | ||
|VM-36-1 \\ VM-36-4 \\ VM36/39|1972-1980 XR-750 / 36 mm with a round slide ((http://xlforum.net/forums/showthread.php?t=2006195&page=3))((1972-2003 HD XR-750 Service Manual pg 39))| | |VM-36-1 \\ VM-36-4 \\ VM36/39|1972-1980 XR-750 / 36 mm with a round slide ((http://xlforum.net/forums/showthread.php?t=2006195&page=3))((1972-2003 HD XR-750 Service Manual pg 39))| | ||
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The VM38-"9" was setup and extensively tested by Jerry Branch for the stock Sportster engine using flow bench tech for the time. ((simeli of the XLFORUM http://xlforum.net/forums/showthread.php?t=1636803&page=2)) \\ | The VM38-"9" was setup and extensively tested by Jerry Branch for the stock Sportster engine using flow bench tech for the time. ((simeli of the XLFORUM http://xlforum.net/forums/showthread.php?t=1636803&page=2)) \\ | ||
+ | ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}||||||| | ||
|38mm Carb Types|Main|Pilot|Needle Jet|Throttle Valve|Jet Needle|Air Jet| | |38mm Carb Types|Main|Pilot|Needle Jet|Throttle Valve|Jet Needle|Air Jet| | ||
|VM38-9 (43mm spigot)((IronMick http://xlforum.net/forums/showthread.php?t=2006195&page=2))|330|30|Q-2|2.5|6DP1|0.5 \\ 2.0| | |VM38-9 (43mm spigot)((IronMick http://xlforum.net/forums/showthread.php?t=2006195&page=2))|330|30|Q-2|2.5|6DP1|0.5 \\ 2.0| | ||
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==== Other HD Keihin Carburetors by Year Model ==== | ==== Other HD Keihin Carburetors by Year Model ==== | ||
- | + | ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&850|}}|||||||| | |
- | ^Other HD Model^Year \\ Carb Used^Serial Number^Flange / \\ Casting \\ Number^ Main Jet \\ Size ^Low Speed \\ Jet Size^Initial Mixture \\ screw setting^Accel Pump \\ spring position^ | + | |Other HD Model|Year \\ Carb Used|Serial Number|Flange / \\ Casting \\ Number| Main Jet \\ Size |Low Speed \\ Jet Size|Initial Mixture \\ screw setting|Accel Pump \\ spring position| |
|All FX|76|27155-76| 860A ((Hd TSB #M-713 dated June 10, 1977)) \\ 860B |185 ((Hd TSB #M713 dated June 10, 1977))|100|7/8|center| | |All FX|76|27155-76| 860A ((Hd TSB #M-713 dated June 10, 1977)) \\ 860B |185 ((Hd TSB #M713 dated June 10, 1977))|100|7/8|center| | ||
|All FL|76-E77|:::|:::|:::|:::|:::|:::| | |All FL|76-E77|:::|:::|:::|:::|:::|:::| | ||
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**Here are some part numbers for the different insulator blocks used on 4 stroke Harleys**. \\ | **Here are some part numbers for the different insulator blocks used on 4 stroke Harleys**. \\ | ||
- | There is no known insulator block that was factory installed on a Bendix Carb. \\ | + | There is no known insulator block that was factory installed on a Bendix Carb as used on Sportsters. \\ |
* 27412-57 for 57-65 XL FL, FX. (Linkert) | * 27412-57 for 57-65 XL FL, FX. (Linkert) |