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TOPIC: carb noise with hypercharger Forum Tools Post New Topic Show latest posts Rules

#233710 Violett (User) Fresh Boarder Posts: 14 carb noise with hypercharger 2 Years, 7 Months ago   Hi, I put a hypercharger on my 07 Roadstar and jetted it. It seems to be running great but when I first start it and put my ear next to the hypercharger opening I can hear a tapping noise.I checked out what I could for something vibrating, but it seems to be coming from the carb. After I ride for a while it goes away.I used the jets that came with the kit,182.5 main, needle in 2nd groove, air bleed 1.3 and 37.5 pilot pms out 3 turns ,this is what they suggested. I also removed the ais system.Any ideas what this may be or am I worried about nothing? Thanks   Logged     The administrator has disabled public write access. #233754 davej (User) Platinum Boarder Posts: 4201 Re:carb noise with hypercharger 2 Years, 7 Months ago   Sorry I can't help. BUT   Logged     dave   The administrator has disabled public write access. #233758 Jon D (User) Junior Boarder Posts: 175 Re:carb noise with hypercharger 2 Years, 7 Months ago   sounds like the lifter noise. perfectly normal when the bike is first started up and the when the noise goes away the lifters have pumped up and are working correctly   Logged     The administrator has disabled public write access. #233787 Violett (User) Fresh Boarder Posts: 14 Re:carb noise with hypercharger 2 Years, 7 Months ago   Thanks for the reply! I still find it a little strange because my Dad has a hypercharger too and it dosen't make the same noise. Could it be caused by the jetting? Thanks for the advice   Logged     The administrator has disabled public write access. #233882 BadBikerBob (User) "Ride your Roadie like a Rice Rocket!" Expert Boarder Posts: 404 Re:carb noise with hypercharger 2 Years, 7 Months ago   I don't have a HyperCharger, but helped a friend install one on his Vulcan 800. I do know this, the butterflies on the HyperCharger are vacuum-actuated & open when engine vacuum increases. When we idled his Vulcan down like he likes to get that "lope", the vacuum was low & the butterflies "fluttered" & created a tapping sound opening & closing so rapidly. If your Roadie idles very low, especially cold, this could be your tapping sound. Does it go away if you rev it a little?   Logged     Last Edit: 2009/10/29 10:09 By BadBikerBob.   The administrator has disabled public write access. #233885 Rayjay (User) Friends make life enjoyable. Platinum Boarder Posts: 1347 Re:carb noise with hypercharger 2 Years, 7 Months ago   Violett   Logged     Ray   The administrator has disabled public write access. #233903 Violett (User) Fresh Boarder Posts: 14 Re:carb noise with hypercharger 2 Years, 7 Months ago   Hi, when I rev it up cold my pipes drown out the tap,but it goes away when I ride around a while. Its not the butterflies either because mine dosen't flutter. I asked Kury about that and they said its because I put the vacuum line directly on the intake manifold because I removed my ais. Thanks for your help.   Logged     The administrator has disabled public write access. #233916 BadBikerBob (User) "Ride your Roadie like a Rice Rocket!" Expert Boarder Posts: 404 Re:carb noise with hypercharger 2 Years, 7 Months ago   Like Jon D stated, it's probably just the normal sounds of an air-cooled, overhead valve, pushrod engine. What type/weight engine oil are you using?   Logged     The administrator has disabled public write access. #233918 Violett (User) Fresh Boarder Posts: 14 Re:carb noise with hypercharger 2 Years, 7 Months ago   I'm got yamalube 20w50 in now but I'm switching to castrol next oil change.   Logged     The administrator has disabled public write access. #233926 BadBikerBob (User) "Ride your Roadie like a Rice Rocket!" Expert Boarder Posts: 404 Re:carb noise with hypercharger 2 Years, 7 Months ago   What's the climate like where you live? You might try a 10W-40 or something close. 20W-50 is pretty thick & takes awhile to get circulated up to the valvetrain. I have in the past, but have ceased using car oil in my motorcycles. If you want Castrol I'd like to recommend the "Act>evo X-TRA 4T 10W-40" or "Power RS V-Twin 20W-40". I personally use Shell Rotella T 5W-40 Synthetic & my valvetrain is very quiet.   Logged     The administrator has disabled public write access.

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