Harley Butterfly Carburetor Clean Kehin AMF Era
HTML-код
- Опубликовано: 31 июл 2022
- Pulled the carb on the 81 Ironhead to give it a quick cleanup trying to chase a stumble that BBC and up on acceleration. I was already doing some other work so a quick cleanup seemed like a good idea too.
Авто/Мото
Great video, cheers man !
Glad you liked it! Thanks for watching!
Great video, thank you !
Glad I could help!! Thanks for watching!
Hi, I see you reply to these comments & I hope you reply to mine.
My carb runs good, but it leaks out the throat when not running, even when it`s cold & even though the petcock is off.
The petcock is new & doesn`t leak.
The carb has been rebuilt.
The float has been set & reset & set lower.
The float has been checked not to leak.
The needle is new. I tried 2 of them.
I have even magnified the seat (what they call "the float cup") & saw some discoloration of the brass, so I polished that with a drill & buffing compound, then with a fine Dremel stone & again buffing compound.
It still drips out of the throat of the carb.
I haven`t been able to find a new seat (float cup) & for now I`m putting another style of carb on my 84 Ironhead, but would still like to get to the bottom of this mystery & run my original butterfly Keihin carb...I just don`t want it catching fire!
Any ideas?
Thanks.
Same butterfly type carb? It's strange it still leaks when the petcock is off. How is the alignment of the carb on the intake/cylinders? Any chance the carb/intake combo isn't level where it mounts up to the motor? Verify if isn't pitched downards at all. I have had one do that when the alignment was off on the motor.
@@WrenchingWrecked Hey thanx for the reply.
Yes, same type of Keihin Butterfly carb & it leaks even when cold & with the petcock shutoff until all the gas is out of the fuel line.
I sat & watched as an air bubble blurps up the line & the carb bowl fills again, then drip, drip, drip.
I did consider the pitch of the carb & wondered if I should re-set the manifold, but now I put on another (same type) carb & it doesn`t leak!
So, problem partially solved & I`m riding.
I already had the carb so it`s basically free
(just time & hair pulling)
but I`d still like to make the leaking carb work.
It`s a mystery & I guess it will just go in the junk box for small parts, but thanx for your consideration.
By the way, my bike is bitchin' & I see yours are too!
Thanx for your vids.
Great video! Currently cleaning up one of these off an ‘84 ironhead. Could you explain how to go about reversing the emissions crap they did to the accelerator pump? Do I need to find an accelerator from an older carb? Thanks!
On this one I used some old parts I had laying around, but if I remember correctly I swapped the housing (the lower base) of the older body accelerator pump. I may have drilled a hole to match where the check ball sits too. I think there is a dimple already in either the body or the base of the pump that I took a drill bit and cleared the passage. They come with the dimple in the casting, even though it's not a through passage. On the motor, I just ditched the stock Q cams for a good set of P cams from an earlier motor. The drilling/housing change allows you to make the accelerator pump drop a full burst of fuel, whereas the late model carbs only squirt some of the shot into the motor and some of it into the bowl. Hope this helps. Good luck with the build!
@@WrenchingWrecked Thanks so much for taking the time to explain! Hopefully won’t have to get into the cams anytime soon, but I’m definitely going todo some more research on how people drill out the passageway to get that maximum fuel shot from the carb!
Thanks for posting. I am working on one of these now for an 1980 Shovel. I rebuilt the carb and when I turn on the fuel it comes right out of the overflow hose. Think that could be float level, is what I am thinking and it seems to be where it should be according to the manual. Do you have a better way to set the float level? Other than the manuals way " hold the carb like this and check the measurement", LOL with the diagram
Usually if it's overflowing it's a stuck float or way out of adjustment on the float. What carb are you running?
Completely stock carb Keihin
27471-80A
@@WrenchingWrecked
@@WrenchingWrecked Thanks, I just kept adjusting it till the it stopped leaking out of the overflow. But it is way off from the manual though. Now I am not getting any gas to squirt twisting the throttle. Any Advice, TIA
The little black plug on the idel jet? Recently bought a ironhed it runs terribly when i give it throttle. It does not have this black plug. It also has had a auto choke installed. I need help 😂
It's my understanding that they need the black plug to run proper. I'd start there for sure!
I got given this carb due to my su carb mis behaving !! Im running it on a 1972 1200 shovel, it's got a 70 idler jet ,do you think this is correct? Pops a bit !cheers ,Lee
It's been a while since I had one of these on a shovel, but I think somewhere in the 70 -75 range should be about right for a shovel off the top of my head. Should be close enough to start and give you a baseline at least. I'd just make sure you triple check the jets for clear passages if it has been sitting a while. Cheers!
Hey man do you know if there’s a Jett kit compatible with these butterfly carbs? Noobie just trying to get his bike running mint with these butterfly carbs. Just don’t want to buy different Jetts and realize they don’t fit.
You should be able to find jets for it, I can't remember where I got mine. I thought most kehins use the same size though.
Hello!
Can you tell me the basic screw settings?
Idle speed 1 1/4 turns, rest?
Thanks!
i have iron 1985 sportster
I usually set the idle speed to seated on the idle adjustment then 1/4 turn in and adjust as needed once running. I run the mix screw at 1.5 out from light seat and adjust once warmed up.
Know anywhere to find a new float? Mine broke and its a pain in the ass to find them
That I do not. Ebay have any? Or Sudco perhaps?
Can you show how to properly adjust the Float.
I’ll try and do one soon on the next carb video. I have four from a Honda and will also be tuning the 883/1200 swap evo with a cv. If you want a butterfly specific one I may be able to do that too.
All my shovelheads have the butterfly carb I love keeping them original. They run very well. I need.to.lean how to adjust the squirt I would.like to shut it off also it squirts to.the far left I need to turn it to the center so the front a d rear get the fuel equally. I dont.know how to.do that.
Give me a bit but I’ll try and do a re adjust video on the pump for you at some point! That is a big part of making em run better. I wish I had the camera on when I first built the blue ironhead for that reason. Lots of time on dialing that carb but off camera
You see nothing because your hands and that awfully big tool prevents seeing.
I'll admit this wasn't the best view.. I'll have a new video next time I mess with another Kehin butterfly. Thanks for the input!
Really bad Video 🙄
Noted. Thanks
What about checking and adjusting float height? Maybe you don’t know how …sorry.
Float height on this one was actually good. Always a good idea to check that while your in there though!