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techtalk:ref:carb01j [2019/09/10 01:09] hippysmack [Throttle Cable] |
techtalk:ref:carb01j [2024/01/10 18:39] hippysmack |
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| ====== Mounting a Mikuni VM-38 ====== | ====== Mounting a Mikuni VM-38 ====== | ||
| - | With the VM38 there are several things you want to make sure you get with the carb, or purchase separately. ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=1286437&page=2)) \\ | + | With the VM38 there are several things you want to make sure you get with the carb, or purchase separately. ((piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/126559-best-carb-for-kick-only-72-xlch/page2?t=1286437&page=2)) \\ |
| The 90° elbow and the correct throttle cable to go with it. The p/n for the cable is either 657-900 or 657-901. \\ | The 90° elbow and the correct throttle cable to go with it. The p/n for the cable is either 657-900 or 657-901. \\ | ||
| The cable has a little longer inner cable (or a little shorter housing) due to the length of the elbow. \\ | The cable has a little longer inner cable (or a little shorter housing) due to the length of the elbow. \\ | ||
| Line 14: | Line 14: | ||
| The mounting angle for and aft inclination of the carb should not exceed app. 20° from horizontal. \\ | The mounting angle for and aft inclination of the carb should not exceed app. 20° from horizontal. \\ | ||
| - | The Mikuni VM-38 has a round venturi and mouth. You need an adapter to go between the round mouth carb and the manifold flange. ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=765846&page=2)) \\ | + | The Mikuni VM-38 has a round venturi and mouth. You need an adapter to go between the round mouth carb and the manifold flange. ((piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/93137-mikuni-vm38-success-story/page2?t=765846&page=2)) \\ |
| There was like a piece of rubber hose and is circa 1973 which uses a different (non flanged) manifold and came with a K&N air filter. \\ | There was like a piece of rubber hose and is circa 1973 which uses a different (non flanged) manifold and came with a K&N air filter. \\ | ||
| \\ | \\ | ||
| - | {{:techtalk:ref:carb:73_branch_rubber_carb_adapter_4_by_piniongear.jpg?direct&300|}} ((drawing by piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=1357783&page=6)) {{:techtalk:ref:carb:vm-38_mounts_by_ryder_rick.jpg?direct&300|}} ((photo by ryder rick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1357783&page=4)) | + | {{:techtalk:ref:carb:73_branch_rubber_carb_adapter_4_by_piniongear.jpg?direct&300|}} ((drawing by piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/129648-mikuni-38mm/page6?t=1357783&page=6)) {{:techtalk:ref:carb:vm-38_mounts_by_ryder_rick.jpg?direct&300|}} ((photo by ryder rick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/129648-mikuni-38mm/page4?t=1357783&page=4)) |
| - | |Early branch fitting. ((photos by piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=1357783&page=6))||| | + | |Early branch fitting. ((photos by piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/129648-mikuni-38mm/page6?t=1357783&page=6))||| |
| |{{:techtalk:ref:carb:73_branch_rubber_carb_adapter_1_by_piniongear.jpg?direct&250|}}|{{:techtalk:ref:carb:73_branch_rubber_carb_adapter_2_by_piniongear.jpg?direct&250|}}|{{:techtalk:ref:carb:73_branch_rubber_carb_adapter_3_by_piniongear.jpg?direct&250|}}| | |{{:techtalk:ref:carb:73_branch_rubber_carb_adapter_1_by_piniongear.jpg?direct&250|}}|{{:techtalk:ref:carb:73_branch_rubber_carb_adapter_2_by_piniongear.jpg?direct&250|}}|{{:techtalk:ref:carb:73_branch_rubber_carb_adapter_3_by_piniongear.jpg?direct&250|}}| | ||
| - | |With flange, rubber and clamps. ((photos by Twoturntables of the XLFORUM http://xlforum.net/forums/showthread.php?t=1469234))|| | + | |With flange, rubber and clamps. ((photos by Twoturntables of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/135674-mikuni-carb-issue?t=1469234))|| |
| |{{:techtalk:ref:carb:vm-38_pic_1_by_twoturntables.jpg?direct&200|}}|{{:techtalk:ref:carb:vm-38_pic_2_by_twoturntables.jpg?direct&200|}}| | |{{:techtalk:ref:carb:vm-38_pic_1_by_twoturntables.jpg?direct&200|}}|{{:techtalk:ref:carb:vm-38_pic_2_by_twoturntables.jpg?direct&200|}}| | ||
| The late adapter (left two pics) has a hose end on one end and a flange on the other, thus enabling you to use the standard Harley manifold. \\ It comes with a standard hose clamp and tightening down too hard can easily cut into the rubber. \\ | The late adapter (left two pics) has a hose end on one end and a flange on the other, thus enabling you to use the standard Harley manifold. \\ It comes with a standard hose clamp and tightening down too hard can easily cut into the rubber. \\ | ||
| [[https://www.amazon.com/gp/product/B007KPUC88/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1&tag=viglink22032-20|Mikuni (M-VM36-200K) 36mm-38mm Rubber Flange Adapter For Harley-Davidson Spigot-Type Carbs]] \\ | [[https://www.amazon.com/gp/product/B007KPUC88/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1&tag=viglink22032-20|Mikuni (M-VM36-200K) 36mm-38mm Rubber Flange Adapter For Harley-Davidson Spigot-Type Carbs]] \\ | ||
| - | {{:techtalk:ref:carb:mikuniadapter1_by_ironmick.jpg?direct&300 |}} ((photo by IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?p=4369215#post4369215)) {{:techtalk:ref:carb:mikuniadapter3_by_ironmick.jpg?direct&200|}} ((photo by IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?p=4369215#post4369215)) \\ | + | {{:techtalk:ref:carb:mikuniadapter1_by_ironmick.jpg?direct&300 |}} ((photo by IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144559-first-startup-w-mikuni-vm38-9/page3#post3178140)) {{:techtalk:ref:carb:mikuniadapter3_by_ironmick.jpg?direct&200|}} ((photo by IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144559-first-startup-w-mikuni-vm38-9/page3#post3178140)) \\ |
| This was bought off Ebay and is thicker than the Branch rubber one. It also has a better clamp. \\ | This was bought off Ebay and is thicker than the Branch rubber one. It also has a better clamp. \\ | ||
| [[https://www.amazon.com/Mikuni-Rubber-Mounting-Flange-Typical/dp/B000WJ5L76/ref=pd_cp_263_2?pd_rd_w=nk8RL&pf_rd_p=ef4dc990-a9ca-4945-ae0b-f8d549198ed6&pf_rd_r=T20Y9S6EZB0BBW46YHTG&pd_rd_r=a57d456a-53ef-4e31-8789-5f52fb24a191&pd_rd_wg=JOPHq&pd_rd_i=B000WJ5L76&psc=1&refRID=T20Y9S6EZB0BBW46YHTG|Mikuni (KHS-004) Rubber Mounting Flange - Typical Carb Size 36 - 40mm]] \\ | [[https://www.amazon.com/Mikuni-Rubber-Mounting-Flange-Typical/dp/B000WJ5L76/ref=pd_cp_263_2?pd_rd_w=nk8RL&pf_rd_p=ef4dc990-a9ca-4945-ae0b-f8d549198ed6&pf_rd_r=T20Y9S6EZB0BBW46YHTG&pd_rd_r=a57d456a-53ef-4e31-8789-5f52fb24a191&pd_rd_wg=JOPHq&pd_rd_i=B000WJ5L76&psc=1&refRID=T20Y9S6EZB0BBW46YHTG|Mikuni (KHS-004) Rubber Mounting Flange - Typical Carb Size 36 - 40mm]] \\ | ||
| - | {{:techtalk:ref:carb:mikuniadapter2_by_ironmick.jpg?direct&200|}} ((photo by IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?p=4369215#post4369215)) {{:techtalk:ref:carb:vm-38_project_5_by_ironmick.jpg?direct&250|}} ((photo by IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1567528&page=2)) {{:techtalk:ref:carb:vm-38_project_7_by_ironmick.jpg?direct&250|}} ((photo by IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1567528&page=2)) \\ | + | {{:techtalk:ref:carb:mikuniadapter2_by_ironmick.jpg?direct&200|}} ((photo by IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144559-first-startup-w-mikuni-vm38-9/page3#post3178140)) {{:techtalk:ref:carb:vm-38_project_5_by_ironmick.jpg?direct&250|}} ((photo by IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144559-first-startup-w-mikuni-vm38-9/page2?t=1567528&page=2)) {{:techtalk:ref:carb:vm-38_project_7_by_ironmick.jpg?direct&250|}} ((photo by IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144559-first-startup-w-mikuni-vm38-9/page2?t=1567528&page=2)) \\ |
| - | These type metal adapters are also available. ((photos by GA_Ironhead of the XLFORUM http://xlforum.net/forums/showpost.php?p=2163034&postcount=5)) \\ | + | These type metal adapters are also available. ((photos by GA_Ironhead of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/81692-quick-relpy-need-carb-fitment?postcount=5#post1683898)) \\ |
| + | (Right) - Carb Adapter, HRS-42 and OEM CV Carb To S-and-S Super E Manifold. ((https://secure.vulcanworks.net/store/Carb-Adapter-HRS-42-and-OEM-CV-Carb-To-S-and-S-Super-E-Manifold.html)) \\ | ||
| {{:techtalk:ref:carb:press-on_carb_adapter.jpg?direct&300|}} {{:techtalk:ref:carb:non_press_carb_adapter.jpg?direct&300|}} | {{:techtalk:ref:carb:press-on_carb_adapter.jpg?direct&300|}} {{:techtalk:ref:carb:non_press_carb_adapter.jpg?direct&300|}} | ||
| Another way to mount the carb to manifold is by cutting a section of radiator hose with the carb end cut at a 45° | Another way to mount the carb to manifold is by cutting a section of radiator hose with the carb end cut at a 45° | ||
| T-bolt clamps were used to secure the hose. \\ | T-bolt clamps were used to secure the hose. \\ | ||
| - | {{:techtalk:ref:carb:vm-38_mounted_by_dooberdad.jpg?direct&300|}} ((photo by dooberdad of the XLFORUM http://xlforum.net/forums/showthread.php?t=1237331)) \\ | + | {{:techtalk:ref:carb:vm-38_mounted_by_dooberdad.jpg?direct&300|}} ((photo by dooberdad of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/124291-mikuni-awsome?t=1237331)) \\ |
| For the carb to intake connection, you'll need the KHS-004 as in above or a good friend with machine tools (unless you have your own) to produce a press on adapter. \\ | For the carb to intake connection, you'll need the KHS-004 as in above or a good friend with machine tools (unless you have your own) to produce a press on adapter. \\ | ||
| Be sure also to have a brace from the backing plate to one of the tappet bolts for added support/vibration dampening especially with the KHS-004 piece. \\ | Be sure also to have a brace from the backing plate to one of the tappet bolts for added support/vibration dampening especially with the KHS-004 piece. \\ | ||
| - | {{:techtalk:ref:carb:homemade_mikuni_vm_mount_1_by_doodah_man.jpg?direct&250|}} ((photo by doodah man of the XLFORUM http://xlforum.net/forums/showthread.php?t=2065863)) {{:techtalk:ref:carb:homemade_mikuni_vm_mount_4_by_doodah_man.jpg?direct&250|}} ((photo by doodah man of the XLFORUM http://xlforum.net/forums/showthread.php?t=2065863)) \\ | + | {{:techtalk:ref:carb:homemade_mikuni_vm_mount_1_by_doodah_man.jpg?direct&250|}} ((photo by doodah man of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/192812-mikuni-to-branch-back-plate?t=2065863)) {{:techtalk:ref:carb:homemade_mikuni_vm_mount_4_by_doodah_man.jpg?direct&250|}} ((photo by doodah man of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/192812-mikuni-to-branch-back-plate?t=2065863)) \\ |
| ====== Spacer for VOES ====== | ====== Spacer for VOES ====== | ||
| If you are running a VOES, you can add a tapped spacer between the manifold and carb for a vacuum line out. \\ | If you are running a VOES, you can add a tapped spacer between the manifold and carb for a vacuum line out. \\ | ||
| There are spacers out there with the tap already in them. \\ | There are spacers out there with the tap already in them. \\ | ||
| - | You can also make your own tap for the VOES line. The hole in the piece needs only top be very tiny, like 1/16". ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1760302)) \\ | + | You can also make your own tap for the VOES line. The hole in the piece needs only top be very tiny, like 1/16". ((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/163769-installing-voes-w-mikuni-vm38-9?t=1760302)) \\ |
| You can make a 1/16" hole thru the manifold or the flange of the carb, then make half the depth of that hole larger, say 1/8" or 3/16", for a tube. \\ | You can make a 1/16" hole thru the manifold or the flange of the carb, then make half the depth of that hole larger, say 1/8" or 3/16", for a tube. \\ | ||
| You can then press in a 1" piece of fluted metal brake line into the manifold. \\ | You can then press in a 1" piece of fluted metal brake line into the manifold. \\ | ||
| Line 57: | Line 58: | ||
| {{:techtalk:ref:carb:hose_barb_for_voes_125-1u10-sb.jpg?direct&100 |}} You can search online for a brass hose barb fitting part number (125-1U10-SB), Tubing ID: 1/16", Thread: 10-32 UNF. \\ | {{:techtalk:ref:carb:hose_barb_for_voes_125-1u10-sb.jpg?direct&100 |}} You can search online for a brass hose barb fitting part number (125-1U10-SB), Tubing ID: 1/16", Thread: 10-32 UNF. \\ | ||
| - | {{:techtalk:ref:carb:spacer_for_voes_by_cave-in.jpg?direct&300|}} ((photo by Cave-in of the XLFORUM http://xlforum.net/forums/showthread.php?t=1760302)) \\ | + | {{:techtalk:ref:carb:spacer_for_voes_by_cave-in.jpg?direct&300|}} ((photo by Cave-in of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/163769-installing-voes-w-mikuni-vm38-9?t=1760302)) \\ |
| - | The line running to the VOES should run uphill so as not to allow condensation to run into it. ((IronMock of the XLFORUM http://xlforum.net/forums/showthread.php?t=1760302&page=2)) \\ | + | The line running to the VOES should run uphill so as not to allow condensation to run into it. ((IronMock of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/163769-installing-voes-w-mikuni-vm38-9/page2?t=1760302&page=2)) \\ |
| ====== Air Cleaner ====== | ====== Air Cleaner ====== | ||
| - | |||
| The best way to go is buy the Mikuni with the air cleaner. This is sold in kit form and without a doubt is the easiest way to attach a Mikuni. \\ | The best way to go is buy the Mikuni with the air cleaner. This is sold in kit form and without a doubt is the easiest way to attach a Mikuni. \\ | ||
| Unless you have the air cleaner backing plate with the deep indention, this thing is going to stick out like a bull with an erection. ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=765846&page=4)) \\ | Unless you have the air cleaner backing plate with the deep indention, this thing is going to stick out like a bull with an erection. ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=765846&page=4)) \\ | ||
