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Author Topic: Carbs. Am i on the right track?  (Read 1247 times)

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Offline Gizmo

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Carbs. Am i on the right track?
« on: February 22, 2017, 09:25:35 AM »
Looking for tips;
73 CB 750
bored out to 836cc
K&N pods
4-1 exhaust
130 mains
40 idles
needle clip 4th from top
mixture screw currently 1 full turn out


Having synced the carbs, i started playing with the mixture screws to compensate for the excessively rich state it is currently sitting in. Despite having backed all mixture screws out in 1/16 increments to the point where they were all 2 full turns out the bike is still excessively rich. My instinct is to change needle position to choke some of the flow of gas.

thoughts?

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Offline SOHC4 Cafe Racer Fan

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Re: Carbs. Am i on the right track?
« Reply #1 on: February 22, 2017, 09:31:11 AM »
Hi Gizmo,

You might want to move this thread to the SOHC4 Bikes board.  This one is for complete build projects. 
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Gizmo

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Re: Carbs. Am i on the right track?
« Reply #2 on: February 22, 2017, 10:10:45 AM »
i will move it. I tried deleting this thread but couldn't. sorry for the confusion
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Offline SOHC4 Cafe Racer Fan

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Re: Carbs. Am i on the right track?
« Reply #3 on: February 22, 2017, 10:54:07 AM »
No worries.  You will tend to get faster responses to tech questions in that board.  You can send a PM to the moderator Scott S. 
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold
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