Jet size
Seasoned HDF Member
Joined: Jul 2011
Posts: 27,097
Likes: 4,676
From: Frozelandia, Minnysota
I go by how it runs and spark plug color. Smooth throttle from idle up, no popping, and a good plug color, I wouldn't do more than tweak the mixture screw. Before doing anything to the carb, I check that the air filter is clean, and no intake/exhaust leaks. From the factory, they run about as lean as possible; I've put a size larger low speed on an otherwise stock bike, adjusted the mix screw, and it ran a little smoother. They'll sometimes run a little cooler at low rpm, too. That's a minimum thing to do when you put lower restriction mufflers on, but seldom do you need to change the high speed jet unless you've done some motor work; start changing things in the heads, and you can get complicated on the carb. When they run good, anything else depends on how much you want to spend, not any limits on that. 
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Depends on what state of tune the bike is in, I would go 45/185 on a stock bike, my Wide Glide (K&N Filter, S&S mufflers and EV27) ran 48/200 with 2 shims under the needle and B6 NGK plugs.
Thread Starter
|
Road Warrior
Joined: Sep 2014
Posts: 1,482
Likes: 89
From: Missouri
It was tuned for Cali but it will stay in mostly in Missouri.
Seasoned HDF Member
Joined: Jun 2010
Posts: 9,333
Likes: 3,883
From: Upstate New York
Back when I had the CV carb on my bike, I ran a 45/185 combo with a stock cam/compression ratio, SE air cleaner and Kerker 2 into 1 exhaust.
My bike came with a 42 slow jet, but would hiccup and cough on deceleration in "cold" weather (below 65 F).
Since I know nothing of your setup, I cannot make any more recommendation than to tell you what worked for me.
My bike came with a 42 slow jet, but would hiccup and cough on deceleration in "cold" weather (below 65 F).
Since I know nothing of your setup, I cannot make any more recommendation than to tell you what worked for me.
Trending Topics
Thread Starter
|
Road Warrior
Joined: Sep 2014
Posts: 1,482
Likes: 89
From: Missouri
Yeah it is. Still has that charcoal canister under the seat.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
Jason Momoa Is Turning Classic Harleys Into PHEVs
Verdad Gallardo
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Verdad Gallardo
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Thread Starter
|
Road Warrior
Joined: Sep 2014
Posts: 1,482
Likes: 89
From: Missouri
Back when I had the CV carb on my bike, I ran a 45/185 combo with a stock cam/compression ratio, SE air cleaner and Kerker 2 into 1 exhaust.
My bike came with a 42 slow jet, but would hiccup and cough on deceleration in "cold" weather (below 65 F).
Since I know nothing of your setup, I cannot make any more recommendation than to tell you what worked for me.
My bike came with a 42 slow jet, but would hiccup and cough on deceleration in "cold" weather (below 65 F).
Since I know nothing of your setup, I cannot make any more recommendation than to tell you what worked for me.
Thread
Thread Starter
Forum
Replies
Last Post