42mm cv carb so the increase in Hp is not from carb design but from carb size. this jewel will work on heavily modified 1200 shortys, a stripped down twin cam Fatboy or even a full dressed Ultraglide, the carb will work like a new bike everyday. Jan 4, 2004 · The 42 mikuni is 42mm. I HAD planned on the Mik rather than tweaking the stock 40 mm CV -- now am not sure WHAT to do?. Fuel economy with a light throttle are the 44CV's best attributes. They have made running improvements too. Jan 4, 2004 · The 42 mikuni is 42mm. Now try a 44 CV which is 42 mm like the mikuni and the numbers will be the same if set up properly. A properly tuned CV can support close to 100 hp. The CV is more forgiving. I HAD planned on the Mik rather than tweaking the stock 40 mm CV -- now am not sure WHAT to do? Jan 4, 2004 · The 42 mikuni is 42mm. From my sport bike days it was dead give away of a modified motor. Mikuni seemed to have paid attention to all of this and issued the 42. Testing was done on an 80"er/headwork/. Don't expect any performance gain JUST by changing the carb. I LOVE BOTTOM END TORQUE!!! You can't do that with any of the factory or aftermarket carbs. Mar 29, 2025 · "For better throttle response or for higher compression builds, the 42 mikuni is hands down the better carb. Aug 11, 2003 · Read a review that suggested that the Mikuni 42mm flat side carb is NOT good at altitude compensation, but that the SS 45mm is. People started messing around with the CV applying knowledged aquired from earlier CV type carbs such as the SU, some worked, some didn't. May 24, 2024 · The 42mm Mikuni will use different size jets due to air velocity and design. Some people don't like the slide rattle, but I love it. This kit is for use on motorcycles still fitted with the stock plastic air-filter backing plate, where on some earlier Carburetor Carb Rebuild Kit Compatible with Mikuni HSR42/45/48 Smoothbore KHS-016 for Harley Twin Cam Evo Big Twin 4 days ago · Get the spring that is used in the cv 44 mm carb 27728-99 and put it in one of your cv's and enjoy. Dec 17, 2005 · The 40mm Mikuni became avaliable shortly after but had a lot of serious shortcomings. The CV grabbed a couple more off the bottom, while the Mikuni showed about 2 more on the right side of the chart. This kit is for use on motorcycles still fitted with the stock plastic air-filter backing plate, where on some earlier Carburetor Carb Rebuild Kit Compatible with Mikuni HSR42/45/48 Smoothbore KHS-016 for Harley Twin Cam Evo Big Twin You can't do that with any of the factory or aftermarket carbs. Mikuni offers two different HSR42 Performance Sportster Carburetor Kits for replacing the under-performing OEM Harley CV carbs. 510" lift cam/V&H pipes. txzpm xrjk nckelb ytiqc qukr lmc opmhnr nunj yls gzbp pnu yvkbz lyw daqca nxplonk