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techtalk:evo:carb01 [2024/12/06 06:04] – [Factory Keihin Butterfly (non-CV) 34mm Carb by Sportster Model/Year] hippysmacktechtalk:evo:carb01 [2025/01/04 21:19] (current) – [Overview - Basic Stock Carb Model Info] hippysmack
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 ====== Overview - Basic Stock Carb Model Info ====== ====== Overview - Basic Stock Carb Model Info ======
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 From 1986-1987, the stock Sportster carburetor was a Keihin 34mm, fixed-venturi "butterfly" model, as used on the Ironhead models from 1979 onward (BT models still used the 38mm version). Contrary to popular folklore, all Keihin non-CV carbs did come with accelerator pumps. From 1986-1987, the stock Sportster carburetor was a Keihin 34mm, fixed-venturi "butterfly" model, as used on the Ironhead models from 1979 onward (BT models still used the 38mm version). Contrary to popular folklore, all Keihin non-CV carbs did come with accelerator pumps.
  
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 In 1989 and thru 2006, the Keihin CV40 carburetors were produced with an accelerator pump to smooth out initial throttle response. In 1989 and thru 2006, the Keihin CV40 carburetors were produced with an accelerator pump to smooth out initial throttle response.
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-\\  ====== Keihin Butterfly (non-CV) Carburetor (Stock on L1976-1987 Sportsters) ====== 
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 +====== Keihin Butterfly (non-CV) Carburetor (Stock on L1976-1987 Sportsters) ======
 See also in the Sportsterpedia: * [[:techtalk:ih:carb01#keihin_butterfly_or_non-cv_carb_late_1976-1987|Keihin Butterfly Carb Basic Information]] See also in the Sportsterpedia: * [[:techtalk:ih:carb01#keihin_butterfly_or_non-cv_carb_late_1976-1987|Keihin Butterfly Carb Basic Information]]
  
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 Interesting discussion here: [[https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/172520-stock-carb-size-on-1100-sportster?t=1847273|https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/172520-stock-carb-size-on-1100-sportster?t=1847273]] Interesting discussion here: [[https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/172520-stock-carb-size-on-1100-sportster?t=1847273|https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/172520-stock-carb-size-on-1100-sportster?t=1847273]]
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- \\  ====== Keihin BD / Screaming Eagle Carb ====== +====== Keihin BD / Screaming Eagle Butterfly Carb ====== 
- +[[techtalk:ref:carb01|Click Here]] to go the page in the REF section on these carbs.
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- +
-//Harley-Davidson motorcycles equipped with some Screamin’ Eagle® high-performance engine parts may not be used on public roads. (and in some cases must be restricted to closed course competition) This engine related performance part is intended for racing applications and is not legal for sale or use in California on pollution controlled motor vehicles. // +
- +
-  * Used in the Screaming Eagle Package line from HD as an Evolution XLH HI-FLO Carburetor & Air Cleaner. The carb was a (27001-88) +
-  * The kit Number is 29081-90C for 86 and later Sportsters. Carb stamping is (27FA) plus a 4 character date code. +
-  * Adjustable Accelerator Pump stroke +
-  * Incorporated a special intake manifold to carb spacer that had to be drilled and tapped (1/4 x 28) in the side for included Voes connection adapter +
-  * Required a 1987 replacement style intake manifold for 1988 and up models +
-  * Required possible grinding of the right rear corner of the front cylinder head, due to interference with the carburetor throttle pulley and cable guides, for proper clearance ((https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/43694-keihin-carb-diagram-and-settings?t=132922)) +
-  * Build kits and the bowl gasket are obsolete and hard to find.  +
-      * The bowl gasket (27013-85) has been found at JW Boon.com but not the build kit. [[https://jwboon.com/index2.php?content=https%3A//jwboon.com/dbhtml/catalog/Bool_OR/Fits_FLT%2520%2522Tour%2520Glide%2522/Section_inlet|Click here for a Link to their add]]. However, they do not ship to the U.S. +
-      * Dennis Kirk sells a kit that looks to have the correct bowl O-ring included under Parts Unlimited branding. Kit (1003-1671). [[https://www.denniskirk.com/parts-unlimited/carb-rebuild-kit-1003-1671.p175288.prd/175288.sku|Click here for the link]]. However, according to the Q&A at the bottom of the page, the O-ring doesn't fit the SE carb. That needs to be verified. +
-      * Parts Unlimited shows kit# 175288 (1003-1671) as a replacement for the stock paper gasket on Yamahas, still a Keihin though and the gasket (O-ring) looks the same. [[https://www.parts-unlimited.com/prod...umber=10031671|Click for the link]] +
-      * You can use a Yamaha part# (8G6-14984-00-00) gasket. +
- +
-^  JET PART NUMBERS & SIZES (IN MM) FOR KEIHIN BD CARBURETORS  ^^^^^^^| +
-^Slow Jet  ^Size| ^Int. Air/Fuel Jet^Size  | ^Main Jet^Size  | +
-|27383-88|42| |27113-87|Blank*| |27106-85|1.30| +
-|27302-84|50| |27109-87|55  | |27107-85|1.35| +
-|27329-83|52| |27172-89|60*  | |27149-85|1.40| +
-|27284-85|55| |27110-87|80  | |27151-85|1.45| +
-|27310-85|58| |27111-87|1.00  | |27150-85|1.50| +
-|27318-85|60| |27112-87|1.20  | |27108-87|1.60*| +
-|27283-85|62| |27173-89|1.70  | |27119-88|1.65| +
-|27896-79|65| |   || |27134-89|1.70| +
-|27894-78|68*| | || | || +
-|27895-87|70| | || | || +
-|27897-78|72| | || | || +
-|  * in carburetor  |||||||| +
- +
-((https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/43694-keihin-carb-diagram-and-settings?t=132922)) +
- +
-^  XLH Hi-Flo Carburetor and Air Cleaner Kit (29081-90C) Parts List  ^^^^^| +
-|Item Description|Part No.|Item Description|Part No.|Item Description|Part No.| +
-|VOES fitting|29190-85|Backplate|29075-91|Crankcase breather hose fitting|29034-85| +
-|Gasket|27022-88|Button head screw|927A|O-ring|11110| +
-|Manifold spacer|29275-88|Support spacer, \\ small I.D.|6786|Hose clamp|9946| +
-|Carburetor assembly|27001-88|Support spacer, \\ large I.D.|6785|Venturi|29148-90| +
-|Allen head bolts|3485A|Hex head bolt|3427|Air cleaner element|29025-88B| +
-|Washer|6702|Allen head bolt|3587A|Vacuum hose kit|26553-94| +
-|Lockwasher|7041|Washer|6333|Air cleaner trim|29024-88| +
-|Air cleaner adapter|27041-90|Washer|6738|Bowl O-ring|27013-85| +
-|Allen head bolt|885A|Gasket|27077-78|Rebuild Kit|91731-85A \\ See [[:techtalk:miscres:miscres05#tsb_950-999|TSB M-961]]| +
-|Nut|7686|Lockwasher|7068| | | +
-|Washer|6228W|Air cleaner cover spacer|31523-88| | | +
-|Carburetor gasket|27044-90|Counter-sunk allen head screw|3795| | | +
- +
-{{:techtalk:evo:carb:se_carb_functions.jpg?direct&300|se_carb_functions.jpg}} +
- +
-{{:techtalk:evo:carb:se_high_flow_carb_1_by_88hugger.jpg?direct&300|se_high_flow_carb_1_by_88hugger.jpg}}((photo by 88hugger of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/72194-carb-questions#post1906502)) {{:techtalk:evo:carb:se_high_flow_carb_2_by_88hugger.jpg?direct&300|se_high_flow_carb_2_by_88hugger.jpg}}((photo by 88hugger of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/72194-carb-questions#post1906502))+
  
 ====== Keihin CV 40mm Carb (1988-2006) ====== ====== Keihin CV 40mm Carb (1988-2006) ======
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-\\  ===== Sub Documents ===== 
  
-</code>+===== Sub Documents =====
  
   * [[:techtalk:evo:carb01b|Keihin CV Carb Identification]]   * [[:techtalk:evo:carb01b|Keihin CV Carb Identification]]

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