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carburetor, choke, keihin, keihin butterfly, rebuild

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  #1  
Old 14th November 2016
RatCityReturns RatCityReturns is offline
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Default Rebuild? Or new carb?

Hey folks,

Just bought my first Ironhead and harley in general. I have a 1979 XLH 1000, its got 16K miles on it and its running like a champ for the most part.

My question is for the carb folks... It currently has the (I think) stock keihin butterfly carb but it has had some alterations done to it... Someone in the past took out the choke cable and assembly and filled the hole with some sort of silicone. they also added some sort of return fuel line on the other side that runs to the overflow on the bottom of the bowl. It doesn't have any trouble starting but i have had some trouble with gas dumping from the overflow when idling. I took the bowl off and cleaned it and adjusted the float and it stopped and then did it again and then stopped. Going to add a fuel filter to hopefully curb that a little.

I'm wondering if its worth buying a parts carb to get the choke back running and rebuild the whole thing or if I should just get a new carb instead. If you think new carb, what are the best options?

Thanks.
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  #2  
Old 14th November 2016
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Folkie Folkie is offline
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I've merged your threads, and moved it to the 'Ironhead' section.
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  #3  
Old 15th November 2016
John Harper John Harper is offline
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If it was me, I'd sure try to fix the original stock carb if at all possible. Unless someone butchered it in critical spots or stripped out stuff. Hopefully it's only silicone and not JB Weld, that shit is permanent.

Here's a rebuild kit for under $20.
http://www.ebay.com/itm/Drag-Special...RW7D7J&vxp=mtr

Couldn't find the P/N for the choke assembly on Ronnie's microfiche, perhaps someone with a 1979 FPM can help out. Get the part numbers and try Ebay.



John
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  #4  
Old 15th November 2016
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IronMick IronMick is offline
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There are usually lots of compatible Keihin carbs on eBay. Anything from late 1976 up to about 1988 will bolt on and work well. They all "look" about the same but there are differences. Best may be the late 1976 to 1978 keihin butterfly. It is 38 mm, and does not suffer the government mandated modifications that are in the 1979-on Keihins.

Here is a late 1976 that has been refurbished, but you may be able to get one cheaper ...

http://www.ebay.com/itm/Rebuilt-AMF-...9YJmeu&vxp=mtr

Here's a 1979 that has been refurbished, but you may be able to get one cheaper ...

http://www.ebay.com/itm/HARLEY-SPORT...JYCZKX&vxp=mtr
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  #5  
Old 15th November 2016
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My favorite carb ...

First StartUp w/Mikuni VM38-9
http://xlforum.net/forums/s....php?t=1567528

I love my Mikuni VM38-9 because ...
http://xlforum.net/forums/s....php?t=1576003

The Branch Flowmetrics back plates used in the above threads are now more difficult to come by than when I wrote these. Here is one [you would want to verify that the 2 1/8 INCH HOLE is correct for a Mikuni VM38-9; I believe that it is] ...

http://www.ebay.com/itm/HARLEY-DAVID...dXRxmR&vxp=mtr
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  #6  
Old 15th November 2016
RatCityReturns RatCityReturns is offline
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Quote:
Originally Posted by IronMick View Post
My favorite carb ...
Wow, very affordable too. Thanks for the response. Those threads have a lot of good info.
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Old 15th November 2016
RatCityReturns RatCityReturns is offline
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Quote:
Originally Posted by John Harper View Post
Couldn't find the P/N for the choke assembly...
Yea I'm interested in just rebuilding it but I'm worried that it looks like the choke assembly is peened on one end and not sure if I can just change out that part...Going to keep digging though. Thanks for the response!
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