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techtalk:ref:carb01 [2017/12/31 05:29]
hippysmack [Keihin BD]
techtalk:ref:carb01 [2018/04/17 22:58] (current)
ixl2relax
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 |27155-70R| (XR) (27823-66R)| |27155-70R| (XR) (27823-66R)|
 |**Bendix / Zenith I6P12 (1972-Early 1976)**|| |**Bendix / Zenith I6P12 (1972-Early 1976)**||
-|27155-72 ((http://​xlforum.net/vbportal/​forums/​showthread.php?​t=1981918))|1972-| +|27155-72 ((http://​xlforum.net/​forums/​showthread.php?​t=1981918))|1972-| 
-|27155-72A ((http://​xlforum.net/vbportal/​forums/​showthread.php?​t=1981918))|1972-Early 1975| +|27155-72A ((http://​xlforum.net/​forums/​showthread.php?​t=1981918))|1972-Early 1975| 
 |27155-72B(( HD Sportster Parts Catalog (99451-78B) ))|1975-Early 1976| |27155-72B(( HD Sportster Parts Catalog (99451-78B) ))|1975-Early 1976|
 |**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/vbportal/​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))|
 |TM38-85 (47mm spigot dia.) \\ TM38-86 (43mm spigot dia.) \\ TM38-85 (47mm spigot dia.) \\ TM38-86 (43mm spigot dia.)|1989-2003 XR-750 / 38 mm with a flat slide((1972-2003 HD XR-750 Service Manual pg 39))| |TM38-85 (47mm spigot dia.) \\ TM38-86 (43mm spigot dia.) \\ TM38-85 (47mm spigot dia.) \\ TM38-86 (43mm spigot dia.)|1989-2003 XR-750 / 38 mm with a flat slide((1972-2003 HD XR-750 Service Manual pg 39))|
 |**Keihin** butterfly (non-CV)(Late 1976-1987)||  ​ |**Keihin** butterfly (non-CV)(Late 1976-1987)||  ​
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   * 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 ​     * 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 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 ​ ((http://​xlforum.net/vbportal/​forums/​showthread.php?​t=132922)) ​+  * 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 ​ ((http://​xlforum.net/​forums/​showthread.php?​t=132922)) ​
  
 ^Carb #​27001-88^^^^^^ ^Carb #​27001-88^^^^^^
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 |27895-87 |70 |        |27895-87 |70 |       
 |27897-78 |72 |  |27897-78 |72 | 
- ​((http://​xlforum.net/vbportal/​forums/​showthread.php?​t=132922)) ​   ​+ ​((http://​xlforum.net/​forums/​showthread.php?​t=132922)) ​   ​
  
  *in carburetor ​                                                                  *in carburetor ​                                                                
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-  * When tuning, it's best to go by the Mikuni manual.Take your time, follow the Mikuni tuning guide carefully (including the throttle position tape) and you will get her close. If she is not as smooth at cruise, you may need to drop the needle back down and then switch it out for a different needle maybe. All needles are the same length and have the same taper, just different diameter of the straight portion. 96 is one richer than a 97. They only make a 95, 96, 97 and 98 needle. 165 main is probably close. But do the wide open throttle test in the manual to verify. ((Shu from the XLFORUM http://​xlforum.net/vbportal/​forums/​showthread.php?​t=14060&​page=3))+  * When tuning, it's best to go by the Mikuni manual.Take your time, follow the Mikuni tuning guide carefully (including the throttle position tape) and you will get her close. If she is not as smooth at cruise, you may need to drop the needle back down and then switch it out for a different needle maybe. All needles are the same length and have the same taper, just different diameter of the straight portion. 96 is one richer than a 97. They only make a 95, 96, 97 and 98 needle. 165 main is probably close. But do the wide open throttle test in the manual to verify. ((Shu from the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=14060&​page=3))
   * HSR 42/ 45/ 48 Tuning Manual [[http://​xlforum.net/​misc/​hsr_tuningmanual_021003.pdf]]   * HSR 42/ 45/ 48 Tuning Manual [[http://​xlforum.net/​misc/​hsr_tuningmanual_021003.pdf]]
   * Also you can click on the discussion tab above or click here [[talk:​techtalk:​ref:​carb01#​mikuni_hsr|Tuning the Mikuni HSR]] for more information from the XLFORUM on tuning the Mikuni.   * Also you can click on the discussion tab above or click here [[talk:​techtalk:​ref:​carb01#​mikuni_hsr|Tuning the Mikuni HSR]] for more information from the XLFORUM on tuning the Mikuni.
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 |{{techtalk:​ref:​carb:​breather_options_for_mikuni_by_c53.jpg?​direct&​300|}}|{{techtalk:​ref:​carb:​breather_options_1_for_mikuni_by_jordan1200.jpg?​direct&​300|}}|{{techtalk:​ref:​carb:​breather_options_2_for_mikuni_by_jordan1200.jpg?​direct&​300|}}| |{{techtalk:​ref:​carb:​breather_options_for_mikuni_by_c53.jpg?​direct&​300|}}|{{techtalk:​ref:​carb:​breather_options_1_for_mikuni_by_jordan1200.jpg?​direct&​300|}}|{{techtalk:​ref:​carb:​breather_options_2_for_mikuni_by_jordan1200.jpg?​direct&​300|}}|
-|((photo by c53 of the XLFORUM http://​xlforum.net/vbportal/​forums/​showthread.php?​t=14060&​page=16))|The horseshoe pipe system over the top of the carb allows for easy access to the mixture screw.((photos by jordan1200 of the XLFORUM http://​xlforum.net/vbportal/​forums/​showthread.php?​t=14060&​page=16))||+|((photo by c53 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=14060&​page=16))|The horseshoe pipe system over the top of the carb allows for easy access to the mixture screw.((photos by jordan1200 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=14060&​page=16))||