Which jet?
Outstanding HDF Member
Joined: Jul 2007
Posts: 2,241
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From: Daytona, Fla.
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
"muffler bearings" is a joke.
the jet required depends on other factors.
if you go to nightrider.com
in the bike tech section are tips for tuning and modifying the CV carb.
many go to a huge jet, but it really depends on the bike.
too large a jet will work, but poor MPG and soot will result.
my last carbed bagger ( 80") had a modded carb with a chamfered, polished slide and a drilled air bleed hole.
best results with the sportster needle were with a 42/170
mike
the jet required depends on other factors.
if you go to nightrider.com
in the bike tech section are tips for tuning and modifying the CV carb.
many go to a huge jet, but it really depends on the bike.
too large a jet will work, but poor MPG and soot will result.
my last carbed bagger ( 80") had a modded carb with a chamfered, polished slide and a drilled air bleed hole.
best results with the sportster needle were with a 42/170
mike
Cruiser
Joined: Aug 2006
Posts: 189
Likes: 0
From: Indiana
I also have a carbbed 06 with rineharts and am currently running a 46 slow and a 190 main
Cruiser
Joined: Aug 2006
Posts: 189
Likes: 0
From: Indiana
yes, stock CV40 carb...runs a little rich but thats ok, better than lean IMO. But after looking in my box of jets the 190 is there so it must have a 185 in there now...
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Cruiser
Joined: Apr 2007
Posts: 238
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From: monmouth county new jersey
i have a 2006 roadking hi flow air cleaner tru dual head pipes and cycle shack slipons, running a 46 low jet a 190 main jet and my mixture screw turned out 2 1/2 turns, i get about 42 mpg if your looking for mileage
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Road Warrior
Joined: Jul 2006
Posts: 1,532
Likes: 7
From: Rochester N.Y.
I had a good combo on my 06 FLHT.
With a Ness Big Sucker and V&H sraight cut classic slip ons and stock carb.
I went with the old Sportster needle # 27094-88 , stock main jet and a #48 pilot jet at 2 turns out.
You will have to unplug the mixture screw for slow speed also.
Originally I tried a #46 pilot , but it wasn't enough for my particular setup , but it might work for you.
The stock main will flow enough for almost any build , unless you get really wild.
I tried 190 , 195 , 200 , and the stock jet was the best for mine.
I also tried using #4 machine washers under the stock needle , but the sportster needle was a better mix.
You should be able to tune it pretty fine for around $20.00 if you are methodical and pay close attention to the sound of your engine and the fuel mileage.
My best mileage with this combo was just about 50 mpg , and I was riding with a very light throttle hand.
Mick
With a Ness Big Sucker and V&H sraight cut classic slip ons and stock carb.
I went with the old Sportster needle # 27094-88 , stock main jet and a #48 pilot jet at 2 turns out.
You will have to unplug the mixture screw for slow speed also.
Originally I tried a #46 pilot , but it wasn't enough for my particular setup , but it might work for you.
The stock main will flow enough for almost any build , unless you get really wild.
I tried 190 , 195 , 200 , and the stock jet was the best for mine.
I also tried using #4 machine washers under the stock needle , but the sportster needle was a better mix.
You should be able to tune it pretty fine for around $20.00 if you are methodical and pay close attention to the sound of your engine and the fuel mileage.
My best mileage with this combo was just about 50 mpg , and I was riding with a very light throttle hand.
Mick
OK, went to the dealer and they looked at me like I was nuts. Stock is 48/190. Any other suggestions?