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techtalk:ih:carb01p [2019/09/09 00:18]
hippysmack [IH: Carburetor, Intake Manifold & Exhaust - Sub-01P]
techtalk:ih:carb01p [2019/10/20 16:05] (current)
hippysmack [27155-76A]
Line 4: Line 4:
 \\ \\
 ====== Keihin Butterfly Carb Identification ====== ====== Keihin Butterfly Carb Identification ======
 +See also in the Sportsterpedia:​ \\
 +  * [[techtalk:​ih:​carb01#​keihin_Butterfly_or_non-cv_carb_late_1976-1987|Keihin Butterfly Carb Basic Information]]
 +  * [[techtalk:​ih:​carb01q|Rebuilding a Keihin Butterfly Carb]]
 +  * [[techtalk:​ih:​carb01r|Keihin Butterfly Carb Function and Tuning]]
 +\\
  
-{{:​techtalk:​ih:​carb:​kehien_butterfly_carb_1_by_racedvl.jpg?​direct&​400|}} ((photo by racedvl of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1791419)) {{:​techtalk:​ih:​carb:​kehien_butterfly_carb_2_by_racedvl.jpg?​direct&​400|}} ((photo by racedvl ​of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1791419)) ​\\+76-78 Keihin carbs do not have an HD number on it or a stamp pad for numberingThe Keihin number is stamped in the flange\\ 
 +The best way to identify a 79-up Harley Keihin carb is to read the Keihin number\\ 
 +It's the first 4 characters stamped on the (Rchoke cable side just above the bowl\\ 
 +The HD part number on some models is on a sticker placed on the top of the carb\\ 
 +Older carbs either weren'​t labeled or the sticker may either be missing or unreadable. \\
  
-|{{:​techtalk:​ih:​carb:​keihin_carb_1_by_freewheeler.jpg?​direct&​200|}}|{{:​techtalk:​ih:​carb:​keihin_carb_2_by_freewheeler.jpg?​direct&​200|}}|{{:​techtalk:​ih:​carb:​79_up_keihin_butterfly_carb_by_pan-shovel-head51-79.jpg?​direct&​300|}}|+As for interchangeability between butterfly carbs; \\ 
 +Any Harley Keihin butterfly ​carb will interchange but the ones for big twins will need to be re-jetted for a Sportster engine\\ 
 +The chart on the [[techtalk:​ih:​carb01#​sportster_keihin_carburetors_by_year_model|Basic ​carb information page]] has the factory jetting information for Sportsters\\ 
 +You may have to go up or down from there depending on what's already in your carb and your specific engine/​A/​C/​exhaust setup\\
  
-{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_1_by_sifty.jpg?​direct&​250|}} ​((photo by sifty of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4294940#​post4294940)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_2_by_sifty.jpg?​direct&​250|}} ((photo by sifty of the XLFORUM http://xlforum.net/​forums/​showthread.php?​p=4294940#​post4294940)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_3_by_sifty.jpg?​direct&​250|}} ​((photo by sifty of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4294940#post4294940)) \\+Also, 76-78 Sportster carbs have a 38mm venture ​(measured at the smallest point near the throttle plate)\\ 
 +79-87 Sportster carbs have a 34mm ventureHowever, the carbs installed on BT's may be 38mm\\ 
 +To find the venture size of the one you have, cut a piece of cereal ​kleenex box cardboard 34mm wide and insert it into the most narrow part of the venturi. ((IronMick ​of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4457592&​highlight=keihin+bowl#post4457592)) \\ 
 +Tight fit = 34 mm, loose fit = 38 mm. \\
  
 +See the pics below for a visual confirmation of year model features. \\
 +
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_id_3.jpg?​direct&​300|}} {{:​techtalk:​ih:​carb:​keihin_butterfly_27155-76_860d_.jpg?​direct&​300|}} \\
 +
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_id_2.jpg?​direct&​300|}} ​ {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_id_1.jpg?​direct&​300|}} ​ \\
 +
 +==== Late 1976-Early 1978 ====
 +
 +      * Features:
 +        * 38mm venture ((Hopper http://​xlforum.net/​forums/​showthread.php?​t=276157&​page=2))
 +        * Pump adjusting screw
 +        * Idle mixture Screw
 +        * Throttle stop screw
 +        * Rocker arm
 +        * Intake manifold ( 27021-71A )(( HD Sportster Parts Catalog (99451-78B) ))
 +        * Accelerator pump rod attached at throttle cam ((HD XLH XLCH-1000 Parts Catalog (99451-78B) ))
 +        * 1977
 +          * New diaphragm accelerator pump ((HD XLH XLCH-1000 Parts Catalog (99451-78B) ))
 +          * Optional main jets were made available ((HD Parts and Accessories Bulletin dated February 8, 1977)) ​
 +       
 +
 +==== Late 1978-1980 ====
 +Changes were made to L78-up carbs due to the [[sportster_history:​99xx-01f|U.S. Clean Air Act of 1978]]. \\
 +      * Features/ Upgrades:
 +        * Changed to 34 mm venture ((Hopper http://​xlforum.net/​forums/​showthread.php?​t=276157&​page=2))
 +        * Fast idle cam
 +        * Limiter Cap (over idle mixture )-late 1978-1979 \\ Square block behind the idle mix tower as a stop for the limiter cap.
 +        * Throttle stop screw, throttle lever
 +        * Choke plate
 +        * Choke lever shaft
 +        * Mounting flange
 +        * Accelerating pump lever
 +        * Rocker arm
 +        * Intermediate lever
 +        * 1979
 +          * Optional high altitude modification kit
 +          * Accelerator pump housing redesigned ((HD Sportster Parts Catalog pg 17))
 +          * Fast idle cam
 +        * 1980-up
 +          * Idle mixture screw is set and sealed off at the factory due to EPA regulations ((HD Service Letter #ML-131 dated September 14, 1979))
 +
 +==== 1981-1983 ====
 +
 +      * Features/ Upgrades:
 +        * 34mm venture
 +        * A second cable added at the throttle (idle cable)
 +        * Throttle lever
 +        * Throttle stop
 +        * Fast idle cam
 +        * Fast idle cam adjusting screw
 +        * Accelerator pump
 +        * 1983
 +          * VOES port
 +          * Evaporative port \\ **Note**: \\ For those sold for use in California (as part of the evaporative emissions kit) the fuel overflow fitting was capped and the overflow line was removed. ((HD Service Bulletin #M-905 dated August 26, 1985))
 +==== 1984-1985 ====
 +
 +      * Features/ Upgrades:
 +        * 34mm venture
 +        * Dual throttle cables
 +        * Throttle lever
 +        * Throttle lever stop
 +        * Voes vacuum port
 +        * Fast idle cam
 +        * Fast idle cam adjusting screw
 +        * VOES port
 +        * Evaporative port
 +
 +====== Sportster Keihin Butterfly Carbs ======
 +
 +===== (B50A) =====
 +L1976 27153-76 Sportster '76 only' Keihin butterfly carb. \\
 +Float bowl (27359-76). \\
 +Accelerator pump (27364-76), inside casting# (1-2). \\
 +It has a solid choke, meaning that the choke plate (butterfly) has no spring action in the linkage. ((Dr Dick of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1035453)) \\
 +You can begin to identify -76 only carb cause there is no plastic pieces on the choke shaft. \\
 +It also has a idle mixture adjusting screw that was not hidden under a plug. It was rite out in the open where you can get to it. \\
 +That is what you can tell from the outside. \\
 +{{:​techtalk:​ih:​carb:​l76_keihin_carb_1_by_ddddylan.jpg?​direct&​300|}} ((photo by DDDDylan of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4428805&​highlight=keihin+bowl#​post4428805)) {{:​techtalk:​ih:​carb:​l76_keihin_carb_2_by_ddddylan.jpg?​direct&​300|}} ((photo by DDDDylan of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4428805&​highlight=keihin+bowl#​post4428805)) \\
 +
 +The real scoop to tell if it's -76 is on the inside. \\
 +Inside, there was no hole drilled between the main jet well and the low speed well to feed the low speed jet. \\
 +That made it the only one that didn't use the low speed jet rubber plug you see when you take off the float bowl. \\
 +This hole can be seen when you remove the rubber plug and look at the wall between the wells on 77 and up Keihin butterfly carbs. \\
 +77-up carbs have a hole to connect the low speed well to the main well. 76 only had no hole. \\
 +If you have a 76 only and install rubber plug, your bike won't run. \\
 +In the float bowl, the accelerator pump discharge nozzle has a .040" orifice, (stamped 100), as apposed to the .031" (stamped 75) used on 77 up. \\
 +But most importantly,​ it didn't have an accelerator pump "​relief"​ port. You can observe the relief action (if you have a 77-up bowl). \\
 +Remove the bowl and the "​L"​ shaped linkage that actuates the pump. Drop the "​L"​ into its hole on the side of the bowl. \\
 +Pour enough fuel in the bowl so that you have it about 1/4 full and actuate the pump by depressing the "​L"​ link (don't squirt on yourself). \\
 +On the 77-up, there is a little hole down on the bowl floor that fuel squirts out of, as well as the brass nozzle at the gasket surface. \\
 +The quicker you press, the more goes thru the "​relief"​. \\
 +All "​relief"​ bowls have a steel rod installed under the discharge nozzle. This rod is free in its movement and you can hear it if you shake the bowl. \\
 +This rod acts as "​variable"​ resistance to fuel flow to the actual discharge nozzle. \\
 +If the pump is actuated slowly enough, all fuel will exit the relief because there isnt enough force to lift the rod. \\
 +
 +'76 only' didn't have the rod at all. Instead, it used a check ball assembly in the small cover that is screwed onto the bowl (the one with the 3 holes). \\
 +When you shake the small cover when it's removed from the bowl, you will hear the ball. There is no ball on 77-up. \\
 +'76 only' has even more differences but those are the biggies. \\
 +
 +The JP Cycles Deluxe Carb Rebuild Kit (4000050) will work. ((DeeDay of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1035453)) \\
 +
 +L76 (only) XLH, XLCH main jet 140, slow jet 100, \\
 +
 +{{:​techtalk:​ih:​carb:​76_keihin_carb_1_by_tld93030.jpg?​direct&​200|}} ((photo by TLD93030 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1035453)) {{:​techtalk:​ih:​carb:​76_keihin_carb_2_by_tld93030.jpg?​direct&​200|}} ((photo by TLD93030 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1721746&​page=2)) {{:​techtalk:​ih:​carb:​76_keihin_carb_3_by_tld93030.jpg?​direct&​200|}} ((photo by TLD93030 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1721746&​page=2)) \\
 +
 +===== (B50B) - (B50C) ​ =====
 +1977-1978 ​ 27153-77 Sportster XLH, XLCH, XLT Keihin Butterfly carb. \\
 +Float bowl (27384-77). \\
 +Accelerator pump (27364-76), inside casting# (1-2). \\
 {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_1_by_maritimer.jpg?​direct&​300|}} ((photo by maritimer of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​postid=1920224)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_2_by_maritimer.jpg?​direct&​300|}} ((photo by maritimer of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​postid=1920224)) \\ {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_1_by_maritimer.jpg?​direct&​300|}} ((photo by maritimer of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​postid=1920224)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_2_by_maritimer.jpg?​direct&​300|}} ((photo by maritimer of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​postid=1920224)) \\
  
-====== 27029-88 ======+{{:​techtalk:​ih:​carb:​77-78_keihin_carb_3_by_pala.jpg?​direct&​250|}} ((photo by pala of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1771280&​highlight=keihin+bowl&​page=2)) {{:​techtalk:​ih:​carb:​77-78_keihin_carb_2_by_pala.jpg?​direct&​250|}} ((photo by pala of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1771280&​highlight=keihin+bowl&​page=2)) {{:​techtalk:​ih:​carb:​77-78_keihin_carb_1_by_pala.jpg?​direct&​250|}} ((photo by pala of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1771280&​highlight=keihin+bowl&​page=2)) \\ 
 + 
 +===== (B83A) - (B83B)===== 
 +1979 Sportster ​ 27469-78,​((1979 HD Sportster Parts Catalog -79 pg 17))  27469-78A ((1980 HD Sportster Parts Catalog -80 pg 17)) XL, XLCH, XLS models, main jet 165, slow jet 65, limiter cap over the idle mixture screw. \\ 
 +Float bowl (27890-78) (B78A). \\ 
 +Accelerator pump (27891-78). Accel pump 27891-80 was sold in 1985 as a replacement on carb 27469-78A. ((1979-1985 HD Sportster Parts Catalog -85 pg 23)) \\ 
 +Idle mixture screw tower has a block made on the back ofit as a stop for the limiter cap. \\ 
 + 
 +{{:​techtalk:​ih:​carb:​79_keihin_idle_mix_tower.jpg?​direct&​200|}} 
 + 
 +**B83A**: \\ 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_by_mickey_t.jpg?​direct&​300|}} ((photo by mickey t of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073560&​highlight=keihin&​page=3)) \\ 
 + 
 +**B83B**: \\ 
 +{{:​techtalk:​ih:​carb:​keihin_carb_1_by_fireboy2600.jpg?​direct&​200|}} ((photo by Fireboy2600 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5676463&​highlight=keihin#​post5676463)) {{:​techtalk:​ih:​carb:​keihin_carb_4_by_fireboy2600.jpg?​direct&​200|}} ((photo by Fireboy2600 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5676463&​highlight=keihin#​post5676463)) {{:​techtalk:​ih:​carb:​keihin_carb_2_by_fireboy2600.jpg?​direct&​200|}} ((photo by Fireboy2600 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5676463&​highlight=keihin#​post5676463)) {{:​techtalk:​ih:​carb:​keihin_carb_3_by_fireboy2600.jpg?​direct&​200|}} ((photo by Fireboy2600 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5676463&​highlight=keihin#​post5676463)) \\ 
 + 
 +===== (B83D) ===== 
 +1980 XL, XLS 27469-80, ((1980 HD Sportster Parts Catalog -80 pg 17)) 27469-80A ((1981 HD Sportster Parts Catalog -81 pg 19)) \\ 
 +Main jet 165, slow jet 65. \\ 
 +Float bowl (27890-78) (B78A). \\ 
 +Accelerator pump (27891-78). Accel pump 27891-80 was sold in 1985 as a replacement on carb 27469-80A. ((1979-1985 HD Sportster Parts Catalog -85 pg 23)) \\ 
 +Soft plug over the A/F mixture screw. \\ 
 + 
 +===== (B83E) ===== 
 +E1981-E1982 XL, XLS 27469-81 ((1981 HD Sportster Parts Catalog -81 pg 21)) ((1983 HD Sportster Parts Catalog -83 pg 23)) \\ 
 +Main jet 160, slow jet 68. \\ 
 +Soft plug over the A/F mixture screw. \\ 
 +Float bowl(27890-78) (B78A). \\ 
 +Accelerator pump (27891-78). \\ 
 +===== (B83F) ===== 
 +L1981-E1982 XL, XLS 27469-81A. ((1983 HD Sportster Parts Catalog -83 pg 23)) \\ 
 +Main jet 160, slow jet 68. \\ 
 +Soft plug over the A/F mixture screw. \\ 
 +Float bowl (27890-78) (B78A). \\ 
 +Accelerator pump (27891-80). \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_1_by_terd_ferguson.jpg?​direct&​300|}} ((photo by terd ferguson of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1515905)) {{:​techtalk:​ih:​carb:​keihin_butterfly_2_by_terd_ferguson.jpg?​direct&​300|}} ((photo by terd ferguson of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1515905)) \\ 
 + 
 +===== (B83G) ===== 
 +L1982 XL, XLS 27469-82. ((1983 HD Sportster Parts Catalog -83 pg 23)) \\ 
 +Main jet 150, slow jet 68. \\ 
 +Soft plug over the A/F mixture screw. \\ 
 +Float bowl(27890-78) (B78A). \\ 
 +Accelerator pump (27891-80). \\ 
 +===== (B83H) ===== 
 +Float bowl (27331-83) (B83H). Casting marks inside the bowl: 328:1 \\ 
 +Accelerator pump (27891-80). \\ 
 + 
 +**E1983** 27469-83 XL, XLS, XLX. ((1984 HD Sportster Parts Catalog -84 pg 27)) \\  
 +\\ 
 +**L1983** 27469-83A XL, XLS, XLX. ((1984 HD Sportster Parts Catalog -84 pg 27)) \\ 
 +Main jet 160, slow jet 52. \\ 
 +Soft plug over the A/F mixture screw. \\ 
 +Accelerator pump (27891-80). \\ 
 +Black plug over evaporative port. \\ 
 +{{:​techtalk:​ih:​carb:​83_keihin_butterfly_carb_by_ratrodder.jpg?​direct&​300|}} ((photo by RatRodder of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​threadid=1670881)) \\ 
 + 
 +===== (B83K) ===== 
 +1984 27469-83B XL, XLS, XLX. \\ 
 +Main jet 160, slow jet 52. \\ 
 +Soft plug over the A/F mixture screw. \\ 
 +Black plug over evaporative port. \\ 
 +Float bowl (27331-83) (B83H). Casting marks inside the bowl: 328:1 \\ 
 +Accelerator pump (27891-80). \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_off_84_pic_1_by_froddy.jpg?​direct&​200|}} ((photo by froddy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=861684&​page=2)) {{:​techtalk:​ih:​carb:​keihin_butterfly_off_84_pic_2_by_froddy.jpg?​direct&​200|}} ((photo by froddy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=861684&​page=2)) {{:​techtalk:​ih:​carb:​keihin_butterfly_off_84_pic_3_by_froddy.jpg?​direct&​200|}} ((photo by froddy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=861684&​page=2)) \\ 
 + 
 +===== (B83K) ===== 
 +1985 27469-83C XL, XLS, XLX \\ 
 +Main jet 160, slow jet 52. \\ 
 +Soft plug over the A/F mixture screw. \\ 
 +Float bowl (27331-83) (B83H). Casting marks inside the bowl: 328:1 \\ 
 +Accelerator pump (27891-80). \\ 
 +Black plug over evaporative port. \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_1_by_hcrashster.jpg?​direct&​300|}} ((photo by hcrashster of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1786621)) \\ 
 + 
 +====== Other HD Keihin Butterfly Carbs ====== 
 +There are usually lots of compatible Keihin carbs on eBay. Anything from late 1976 up to about 1988 will bolt on and work well. ((Ironmick of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5465749&​highlight=keihin+bowl#​post5465749)) \\ 
 +They all "​look"​ about the same but there are differences. (As for factory Sportster carbs), best may be the late 1976 to 1978 keihin butterfly. \\ 
 +It is 38 mm, and does not suffer the government mandated modifications that are in the 1979-on Keihins. \\ 
 + 
 +===== 27155-76A ===== 
 +Application for all 76-E1978 FX models. ((1971-1984 HD FX Model Parts Catalog pg 31)) \\ 
 +No choke spring, no plastic on choke. ((Alford of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1035453)) \\ 
 +Air Fuel Screw is on top, not buried under a cap. \\ Accelerator pump has check ball, not the rod. \\ 
 +Low speed jet is covered with rubber plug and there is a hole between the low speed and main well. \\ 
 +Float bowl: ((1970-1978 HD Electra Glide and Super Glide Parts Catalog pg 17)) \\ 
 +76-E77 (27359-76). \\ 
 +L77-78 (27359-76A). \\ 
 +Accelerator pump 76-78 (27364-76). ((1970-1978 HD Electra Glide and Super Glide Parts Catalog pg 17)) \\ 
 + 
 +===== (B28K) ===== 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_b28k_pic_1_by_jezter.jpg?​direct&​300|}} ((photo by jester of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1392914)) {{:​techtalk:​ih:​carb:​keihin_b28k_pic_2_by_jezter.jpg?​direct&​300|}} ((photo by jester of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1392914)) {{:​techtalk:​ih:​carb:​keihin_b28k_pic_3_by_jezter.jpg?​direct&​300|}} ((photo by jester of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1392914)) \\ 
 +===== (B81B) ===== 
 + 
 +27468-78A. \\ 
 +L1978-1979 FX, FXE, FXS \\ 
 +{{:​techtalk:​ih:​carb:​keihin_buttefly_1_by_spuggy.jpg?​direct&​300|}} ((photo by spuggy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5694195&​highlight=keihin#​post5694195)) \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_buttefly_2_by_spuggy.jpg?​direct&​300|}} ((photo by spuggy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5694195&​highlight=keihin#​post5694195)) {{:​techtalk:​ih:​carb:​keihin_buttefly_3_by_spuggy.jpg?​direct&​300|}} ((photo by spuggy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5694195&​highlight=keihin#​post5694195)) {{:​techtalk:​ih:​carb:​keihin_buttefly_4_by_spuggy.jpg?​direct&​300|}} ((photo by spuggy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5694195&​highlight=keihin#​post5694195)) \\ 
 + 
 +===== (B8?D) ===== 
 +27467-80. \\ 
 +This is reportedly a 1980 Shovelhead carburetor. ((stu Elpaso of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=951659)) \\ 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_2_by_big_e78.jpg?​direct&​250|}} ((photo by Big_e78 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=951659)) {{:​techtalk:​ih:​carb:​keihin_butterfly_1_by_big_e78.jpg?​direct&​250|}} ((photo by Big_e78 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=951659)) {{:​techtalk:​ih:​carb:​keihin_butterfly_3_by_big_e78.jpg?​direct&​250|}} ((photo by Big_e78 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=951659&​page=2)) \\ 
 + 
 +===== (B78B) ===== 
 + 
 +{{:​techtalk:​ih:​carb:​79_up_keihin_butterfly_carb_by_pan-shovel-head51-79.jpg?​direct&​300|}} ((photo by pan-shovel-head51-79 of the XLFORUM)) \\ 
 + 
 +===== (B78E) ===== 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_b78e_pic_1_by_jezter.jpg?​direct&​300|}} ((photo by jezter of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1392914)) {{:​techtalk:​ih:​carb:​keihin_b78e_pic_2_by_jezter.jpg?​direct&​300|}} ((photo by jezter of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1392914)) {{:​techtalk:​ih:​carb:​keihin_b78e_pic_3_by_jezter.jpg?​direct&​300|}} ((photo by jezter of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1392914)) \\ 
 + 
 +===== (B79A) ===== 
 +27472-79. \\ 
 +This was the factory carb mounted to a 1979 FXS / FXEF-80, main jet 160, low speed jet 72. \\ 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_27472-79_pic_4_by_jesse_eads.jpg?​direct&​300|}} ((photo by jesse_eads of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5778439#​post5778439)) {{:​techtalk:​ih:​carb:​keihin_butterfly_27472-79_pic_1_by_jesse_eads.jpg?​direct&​300|}} ((photo by jesse_eads of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5778439#​post5778439)) \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_27472-79_pic_2_by_jesse_eads.jpg?​direct&​300|}} ((photo by jesse_eads of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5778439#​post5778439)) {{:​techtalk:​ih:​carb:​keihin_butterfly_27472-79_pic_3_by_jesse_eads.jpg?​direct&​300|}} ((photo by jesse_eads of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5778439#​post5778439)) \\ 
 + 
 +===== (B79B) ===== 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb1_by_brendan.jpg?​direct&​220|}} ((photo by Brendan of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5759341)) \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb2_by_brendan.jpg?​direct&​220|}} ((photo by Brendan of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5759341)){{:​techtalk:​ih:​carb:​keihin_butterfly_carb4_by_brendan.jpg?​direct&​220|}} ((photo by Brendan of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5759341)){{:​techtalk:​ih:​carb:​keihin_butterfly_carb3_by_brendan.jpg?​direct&​220|}} ((photo by Brendan of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5759341)) 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb5_by_brendan.jpg?​direct&​220|}} ((photo by Brendan of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5759341)){{:​techtalk:​ih:​carb:​keihin_butterfly_carb6_by_brendan.jpg?​direct&​220|}} ((photo by Brendan of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5759341)){{:​techtalk:​ih:​carb:​keihin_butterfly_carb7_by_brendan.jpg?​direct&​220|}} ((photo by Brendan of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5759341)) 
 + 
 + 
 +===== (B79E) ===== 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_b79e_pic_1_by_jezter.jpg?​direct&​300|}} ((photo by jester of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1392914)) {{:​techtalk:​ih:​carb:​keihin_b79e_pic_2_by_jezter.jpg?​direct&​300|}} ((photo by jester of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1392914)) {{:​techtalk:​ih:​carb:​keihin_b79e_pic_3_by_jezter.jpg?​direct&​300|}} ((photo by jester of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1392914)) \\ 
 + 
 +===== (B79F) ===== 
 +27472-81A. \\ 
 +1981-1983 FXEF-80 /  FXE-80 \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_carb3_by_abzy.jpg?​direct&​200|}} ((photo by abzy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=276157&​page=13)) {{:​techtalk:​ih:​carb:​keihin_carb1_by_abzy.jpg?​direct&​200|}} ((photo by abzy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=276157&​page=13)) {{:​techtalk:​ih:​carb:​keihin_carb2_by_abzy.jpg?​direct&​200|}} ((photo by abzy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=276157&​page=13)) {{:​techtalk:​ih:​carb:​keihin_carb4_by_abzy.jpg?​direct&​200|}} ((photo by abzy of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=276157&​page=13)) \\ 
 + 
 + 
 + 
 + 
 +===== 27029-86 ===== 
 +1988 FLT or FXR. 38mm venture. ((NH86XL883 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1258235)) \\ 
 +{{:​techtalk:​evo:​carb:​idle_mixture_screw_1_by_sifty.jpg?​direct&​300|}} ((photo by sifty of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1592463&​page=48)) ​ \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_1_by_sifty.jpg?​direct&​250|}} ((photo by sifty of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4294940#​post4294940)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_2_by_sifty.jpg?​direct&​250|}} ((photo by sifty of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4294940#​post4294940)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_3_by_sifty.jpg?​direct&​250|}} ((photo by sifty of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4294940#​post4294940)) \\ 
 + 
 +===== (02BP) ===== 
 + 
 +Part number unknown at this time, BT carb . Possible 83 model carb due to the black rubber cap on the top of the carb's evaporative port. ((IronMick of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1661384&​highlight=keihin+bowl)) ((http://​xlforum.net/​forums/​showthread.php?​t=1918803&​highlight=keihin&​page=2)) \\ 
 +Just leave it capped. It has no practical use. \\ 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_1_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_2_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_3_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_4_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_5_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_6_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_7_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_8_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_9_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_10_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_11_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_12_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) \\ 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_13_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_14_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_15_by_robicycle.jpg?​direct&​300|}} ((photo by Robicycle of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1663198&​highlight=keihin+bowl)) \\ 
 + 
 +===== (02BQ) ===== 
 + 
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_1_by_maustarman.jpg?​direct&​200|}} ((photo by Maustarman of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2020910)) {{:​techtalk:​ih:​carb:​keihin_butterfly_2_by_maustarman.jpg?​direct&​200|}} ((photo by Maustarman of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2020910)) \\ 
 + 
 +===== (02BR) ===== 
 + 
 +27029-86B. \\ 
 +All 1987 FXR, Softail models, main jet 162, slow jet 50 \\ 
 +{{:​techtalk:​ih:​carb:​keihin_carb_by_popgadget.jpg?​direct&​300|}} ((photo by Popgadget of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5722462&​highlight=keihin#​post5722462)) {{:​techtalk:​ih:​carb:​kehien_butterfly_carb_1_by_racedvl.jpg?​direct&​300|}} ((photo by racedvl of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1791419)) {{:​techtalk:​ih:​carb:​kehien_butterfly_carb_2_by_racedvl.jpg?​direct&​300|}} ((photo by racedvl of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1791419)) \\ 
 + 
 +===== 27029-88 ​=====
  
 Other numbers on body: (0695) and (F58A) (BH28) ​ for 88-89 FLT, FXR and SOFTAIL models (except Cal.) ((https://​serviceinfo.harley-davidson.com/​sip/​service/​procedure/​5697/​PDF/​f52c2fcc-9daa-4115-a6f7-006df7a9d140/​en_US?​uid=f52c2fcc-9daa-4115-a6f7-006df7a9d140&​time=1480204850000&​baseUrl=%2Fcontent%2Fdocument%2Fview%3Fid%3D5697)) \\ Other numbers on body: (0695) and (F58A) (BH28) ​ for 88-89 FLT, FXR and SOFTAIL models (except Cal.) ((https://​serviceinfo.harley-davidson.com/​sip/​service/​procedure/​5697/​PDF/​f52c2fcc-9daa-4115-a6f7-006df7a9d140/​en_US?​uid=f52c2fcc-9daa-4115-a6f7-006df7a9d140&​time=1480204850000&​baseUrl=%2Fcontent%2Fdocument%2Fview%3Fid%3D5697)) \\
 +
 +{{:​techtalk:​ih:​carb:​keihin_carb_1_by_freewheeler.jpg?​direct&​200|}} ((photo by Freewheeler of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1918803&​highlight=keihin)) {{:​techtalk:​ih:​carb:​keihin_carb_2_by_freewheeler.jpg?​direct&​200|}} ((photo by Freewheeler of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1918803&​highlight=keihin)) ​ {{:​techtalk:​ih:​carb:​keihin_carb_by_icefire.jpg?​direct&​300|}} ((photo by Icefire of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=84429)) \\
  
 {{:​techtalk:​ih:​carb:​kehien_butterfly_carb_1_by_vwtopia.jpg?​direct&​300|}} ((photo by vwtopia of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​threadid=1662810)) {{:​techtalk:​ih:​carb:​kehien_butterfly_carb_2_by_vwtopia.jpg?​direct&​300|}} ((photo by vwtopia of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​threadid=1662810)) ​ {{:​techtalk:​ih:​carb:​kehien_butterfly_carb_3_by_vwtopia.jpg?​direct&​300|}} ((photo by vwtopia of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​threadid=1662810)) \\ {{:​techtalk:​ih:​carb:​kehien_butterfly_carb_1_by_vwtopia.jpg?​direct&​300|}} ((photo by vwtopia of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​threadid=1662810)) {{:​techtalk:​ih:​carb:​kehien_butterfly_carb_2_by_vwtopia.jpg?​direct&​300|}} ((photo by vwtopia of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​threadid=1662810)) ​ {{:​techtalk:​ih:​carb:​kehien_butterfly_carb_3_by_vwtopia.jpg?​direct&​300|}} ((photo by vwtopia of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​threadid=1662810)) \\
  
-====== 27026-88A ====== +===== (F59B) ​===== 
-Body casting ​ (0565) and (F59B) for 88-89 FLT, FXR and SOFTAIL models (Cal. and Swiss models only) ((https://​serviceinfo.harley-davidson.com/​sip/​service/​procedure/​5697/​PDF/​f52c2fcc-9daa-4115-a6f7-006df7a9d140/​en_US?​uid=f52c2fcc-9daa-4115-a6f7-006df7a9d140&​time=1480204850000&​baseUrl=%2Fcontent%2Fdocument%2Fview%3Fid%3D5697)) \\ +27026-88A. \\ 
 +88-89 FLT, FXR and SOFTAIL models (Cal. and Swiss models only) ((https://​serviceinfo.harley-davidson.com/​sip/​service/​procedure/​5697/​PDF/​f52c2fcc-9daa-4115-a6f7-006df7a9d140/​en_US?​uid=f52c2fcc-9daa-4115-a6f7-006df7a9d140&​time=1480204850000&​baseUrl=%2Fcontent%2Fdocument%2Fview%3Fid%3D5697)) \\
  
 {{:​techtalk:​ih:​carb:​27026-88a_keihin_by_tuanis.jpg?​direct&​200|}} ((photo by Tuanis of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2029663)) \\ {{:​techtalk:​ih:​carb:​27026-88a_keihin_by_tuanis.jpg?​direct&​200|}} ((photo by Tuanis of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2029663)) \\
  
 +===== (F20Q) =====
 +
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_2_by_mrironhead.jpg?​direct&​300|}} ((MrIronHead of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2072120)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_1_by_mrironhead.jpg?​direct&​300|}} ((MrIronHead of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2072120)) \\
 +
 +{{:​techtalk:​ih:​carb:​keihin_butterfly_carb_3_by_mrironhead.jpg?​direct&​300|}} ((MrIronHead of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2072120)) {{:​techtalk:​ih:​carb:​keihin_butterfly_carb_4_by_mrironhead.jpg?​direct&​300|}} ((MrIronHead of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2072120)) \\
 +
 +====== Helpful Links ======
 +**Video**: \\
 +Here are some excellent videos of servicing the pre-CV Keihin Butterfly carbs: ((Used by permission - SportsterPaul at the XLForum - http://​xlforum.net/​forums/​showthread.php?​t=2055701))
 +
 +  * [[https://​youtu.be/​f_Ek37GEEN4|#​1 - Tips and tricks.]]\\
 +  * [[https://​youtu.be/​OC75jFhAwLc|#​2 - Disassembly and cleaning.]]\\
 +  * [[https://​youtu.be/​WaZHg2Brl3U|#​3 - Assembly and testing.]]\\
 +  * [[https://​youtu.be/​5Q26WDIxWek|#​4 - Testing and start-up.]]\\
  
 \\ \\