Differences

This shows you the differences between two versions of the page.

--- techtalk:ref:carb01 [2017/12/27 05:43]
ixl2relax ↷ Links adapted because of a move operation
+++ techtalk:ref:carb01 [2018/04/17 22:58]
ixl2relax
@@ Line 42: / Line 42: @@
 |27155-70R| (XR) (27823-66R)|
 |**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|
 |**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))|
 |**Keihin** butterfly (non-CV)(Late 1976-1987)||
@@ Line 169: / Line 169: @@
 ====== PERFORMANCE OPTIONS ======
-===== Keihin BD =====
+===== Keihin BD (Screaming Eagle 40mm Kit) =====
   * Used in the Screaming Eagle Package line from HD as an Evolution XLH HI-FLO Carburetor & Air Cleaner.
   * 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  ((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^^^^^^
@@ Line 189: / Line 190: @@
 |27895-87 |70 |
 |27897-78 |72 |
- ((http://xlforum.net/vbportal/forums/showthread.php?t=132922))
+ ((http://xlforum.net/forums/showthread.php?t=132922))
  *in carburetor
+==== Accelerator Pump ====
+  * **Accelerator pump rod length**: A number of Screaming Eagle carb kits (91731-85A), packaged during March of 1988 (3/88 date code), contained carburetors with accelerator pump rods that were too short. The incorrect pump rods were only 2.35" long, end to end, and completely disabled the accelerator pump and caused the engine to stumble upon fast acceleration. The correct length pump rod (27374-88) is 2.55". ((HD Service Bulletin #M-961 dated April 8, 1988))
+  * Dealers were to check their parts stock and replace any pump rods that measured short and also check the pump rod length on any motorcycles that exhibited a stumble upon acceleration.
 ----
@@ Line 209: / Line 220: @@
-  * 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]]
   * 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.
@@ Line 217: / Line 228: @@
 |{{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))||

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