Carb identification
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1st Gear
Joined: Jan 2019
Posts: 5
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From: Israel
Carb identification
Hey guys,
I've just bought my first HD, its an 1974 XLCH and i'm starting to build it.
I'm not sure what type of carb I have on it, your help will be much appreciated
Thanks,
Gilad.
https://imgur.com/S7DfwsV
https://imgur.com/Ix2scYD
https://imgur.com/4Jrb78r
I've just bought my first HD, its an 1974 XLCH and i'm starting to build it.
I'm not sure what type of carb I have on it, your help will be much appreciated
Thanks,
Gilad.
https://imgur.com/S7DfwsV
https://imgur.com/Ix2scYD
https://imgur.com/4Jrb78r
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,071
Likes: 1,006
that is not a stock or should i say original item for the 74.
that carb is built by keihin. hd also sold them as a screaming chicken item.
http://sportsterpedia.com/doku.php
here is a site specific for the sportster and has a lot of info including carbs.
that carb is built by keihin. hd also sold them as a screaming chicken item.
http://sportsterpedia.com/doku.php
here is a site specific for the sportster and has a lot of info including carbs.
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,071
Likes: 1,006
bird in hand so give it a try. the sportsterpedia is a good sorce of info.
hands down the most popular carb for the iron was mikuni vm38 round slide carb. i run one on my 74ch since 1975 and over 175k miles. they are easy to tune and perform well. they are simple and have the best start circuit i have seen and no accel pump for young kids to twist on and flood the engine. i also run the compu-fire ignition with the mechanical advancer. the ultima ignition is a good upgrade and with the timing cup and electronic adv control. i had p cam and 9:1 setup but now run 10:1 and y cams.
hands down the most popular carb for the iron was mikuni vm38 round slide carb. i run one on my 74ch since 1975 and over 175k miles. they are easy to tune and perform well. they are simple and have the best start circuit i have seen and no accel pump for young kids to twist on and flood the engine. i also run the compu-fire ignition with the mechanical advancer. the ultima ignition is a good upgrade and with the timing cup and electronic adv control. i had p cam and 9:1 setup but now run 10:1 and y cams.
Thread Starter
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1st Gear
Joined: Jan 2019
Posts: 5
Likes: 0
From: Israel
Thank you for your replies.
In order to get new jets and air cleaner, I need to know what is the specific model of this carb, and for some reason I can't find the exact one with these serial numbers.
In order to get new jets and air cleaner, I need to know what is the specific model of this carb, and for some reason I can't find the exact one with these serial numbers.
Last edited by Gilad; Jan 16, 2019 at 09:32 AM.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
It looks a much later carb than your bike, which suggests it is worth keeping IMHO. It's H-D part number is on that red label: #27502-86B. The 'B' simply means that it is an upgraded carb relative to when it was originally introduced, which is 1986, as indicated by the -86. If you post that number into a search engine you should see confirmation that it is a stock 1100cc Sportster carb. By coincidence the 1100 was introduced in 1986.
It is unlikely you will be able to get any genuine Harley spares for that carb, but you should find parts, such as a rebuild kit, in the aftermarket.
It is unlikely you will be able to get any genuine Harley spares for that carb, but you should find parts, such as a rebuild kit, in the aftermarket.
Grand HDF Member
Joined: May 2014
Posts: 3,843
Likes: 1,174
From: florida
Its the old Keihin non cv performance carb. Properly jetted, they can work very well. Jets are available in the aftermarket if there is no one old enough or knowledgeable enough yo help you at your local H D dealer.
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