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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #1  
Old 3 Weeks Ago
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Default Question about CV carb on iron head.

Hello,
I have one question i can't seem to anwser or figure out with my carb setup.
I have a 76 xlh with a 40mm cv carb 170main jet and 45 slow jet. With a screened velocity stack.
While riding or on the side stand at part throttle or above i can feel gas being spit out on my leg. And i can see fuel on my vStack. I've played with the jetting to no avail. I can't seem to get it to stop. I have no leaks and the bike runs really good and strong.

Am I missing something? Or is this normal for CV without an air cleaner?
Thanks
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Running drag pipes? They make a phenomenon known as reversion even worse, which results in fuel going the wrong way out of the carb.
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Default

Quote:
Originally Posted by doodah man View Post
Running drag pipes? They make a phenomenon known as reversion even worse, which results in fuel going the wrong way out of the carb.
Yes 40" 1.75" drag pipes
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Default

A good 2:1 exhaust is the best cure, but for us cheap bastardos who can’t afford that there is always lollipops
http://www.nightrider.com/biketech/exhaust.htm

Here’s an old post speaking directly to the fuel expulsion...
http://xlforum.net/forums/showpost.p...4&postcount=21
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  #5  
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Other Motorcycle Year: 2003
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Default

Quote:
Originally Posted by doodah man View Post
A good 2:1 exhaust is the best cure, but for us cheap bastardos who can’t afford that there is always lollipops
http://www.nightrider.com/biketech/exhaust.htm
Will this help with my issue? This is surprising.
I will make this thumb screw mod today!

I would be happy to do a 2-1 on it. Thoughts on the sportyparts 2-1
https://sportyparts.com/products/iro...=6602335715367
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I think that sporty parts exhaust would be a good replacement, but for that price I imagine you could make it yourself for a lot less, or have an exhaust shop make it for you. Either way. But, just to keep the gas off of your leg, yes the lollipops will definitely work.
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Sportster/Buell Model: XLCR "Blacky"
Sportster/Buell Year: 1977
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Sportster/Buell Year #2: 1976
Other Motorcycle Model: Sold 883R / 1425
Other Motorcycle Year: 2003
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Default

Quote:
Originally Posted by doodah man View Post
I think that sporty parts exhaust would be a good replacement, but for that price I imagine you could make it yourself for a lot less, or have an exhaust shop make it for you. Either way. It just to keep the gas off of your leg, yes the lollipops will definitely work.
Perfect thank you!
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Sportster/Buell Model: XLCR "Blacky"
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Sportster/Buell Year #2: 1976
Other Motorcycle Model: Sold 883R / 1425
Other Motorcycle Year: 2003
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Thumb screws installed and test ride ridden. Worked like a charm. Thank you kind sir!
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Awesome!!! Did you have to re-tune the carb any?
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