Fat boy decel
Tourer
Joined: Feb 2009
Posts: 362
Likes: 1
From: New York
No I understand about altitude and carburetion but he said mountains and didn't specify any elevation. There are mountains below sea level. Does not necessarily mean it's high enough to make a difference. May only be noticing the lean decel pops because of the long downhill decents. Pops in the exhaust are usually caused by a leak in the exhaust or a lean condition. Using the context clues in his post... stock bike, slips ons, never jetted. The bike is lean...
in higher altitude a carbed bike will run richer because the air is thinner. just to prove what way to go you can add a little choke. if the issue is still there then you need to go leaner
here is a good place to start. read and learn.
http://www.harley-performance.com/index.html
here is a good place to start. read and learn.
http://www.harley-performance.com/index.html
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Joined: Feb 2009
Posts: 90
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From: South Carolina
Thanks to all for the opinions and I will try some of your suggestions. THe only thing I done to the carb was went from a 45mm to 48mm on the slow jet. The stealership suggested this to stop the "carb farting" and it did. I found a local shop yesterday to rejet for around 60 bucks so I will give that a try too.
Thanks again to all for the advice.
Thanks again to all for the advice.
Ultimate HDF Member
Joined: Oct 2007
Posts: 5,257
Likes: 6
From: Leander Texas
that is good to find a shop if they know what they are doing. rejecting is something you will want to do your self and save the money. i did that on my sportster. i went thru about 4 jets until i found the right combination. If i was going to do over i would have make the stage 1 mods and paid for a dyno tune. as it turned out the first kit i bought from the link here was the correct kit, it just took hours of study to get it tuned right.
http://www.harley-performance.com/index.html
http://www.mummbrothers.com/SRF_Stuf...e/Air_Fuel.htm
http://members.aol.com/roundr1/CVK40.html
http://www.sportster.org/tech/carb/r...ng-bussy.shtml
http://www.keihin-us.com/tune2.htm
http://www.jetsrus.com/main_page.htm
http://www.jetsrus.com/main_page.htm
http://www.jetsrus.com/FAQ_rejetting.htm
http://www.keihin-us.com/tune1.htm
http://www.keihin-us.com/am/
http://www.harley-performance.com/index.html
http://www.mummbrothers.com/SRF_Stuf...e/Air_Fuel.htm
http://members.aol.com/roundr1/CVK40.html
http://www.sportster.org/tech/carb/r...ng-bussy.shtml
http://www.keihin-us.com/tune2.htm
http://www.jetsrus.com/main_page.htm
http://www.jetsrus.com/main_page.htm
http://www.jetsrus.com/FAQ_rejetting.htm
http://www.keihin-us.com/tune1.htm
http://www.keihin-us.com/am/
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Joined: Feb 2009
Posts: 90
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From: South Carolina
What a link!! I will try myself with these kind of detailed instructions on the site. After reading, it seems I should go ahead with the stage one while I am in there. Thanks for the links.
tk353,
When you say 4 jets, you mean between the pilot and main jet combos?
tk353,
When you say 4 jets, you mean between the pilot and main jet combos?
Ultimate HDF Member
Joined: Oct 2007
Posts: 5,257
Likes: 6
From: Leander Texas
i bought 4 jets because of size and quality. some were made bad and had rough edges. the kit i bought from the first like had the right parts and good quality.
yes that too. i found out you select the main jet first, then the slow and then play with the meter rod and shims and rod size
yes that too. i found out you select the main jet first, then the slow and then play with the meter rod and shims and rod size
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