Dyno Jet
Outstanding HDF Member
Joined: Feb 2009
Posts: 2,005
Likes: 53
From: ID Ho
Dyno Jet kits SUCK A$$, maybe they work in Vegas but I dont know of anywhere else they do.
Drag has a kit that works great, Ive used it in several states and elevations and it works. I'll get the part # when I get home.
Drag has a kit that works great, Ive used it in several states and elevations and it works. I'll get the part # when I get home.
Road Warrior
Joined: Mar 2008
Posts: 1,325
Likes: 12
From: SE Florida
I'll bet it was a factory carb. I think '06 was the last year???
I have a CV-Performance Deluxe kit and it's ok. The quality seemed good, but..... in the end I'm not so sure.
I'm not fond of the lighter spring as it makes the throttle twitchy in the slow speed stuff. Performance wise it's not much different than the stock set up, but it is smoother. But it was hard to set up. The needle jet takes a lot of attempts to get the carb to be smooth. (And I bought the EZ needle, but wouldn't recommend it. The actual 'needle' is a different lenth than factory.) At least for me as I'm not used to playing with carbs. Also, not much help from the company if you have a question. All q's have to be done through their forum, so if you need help, it could take a few days, as the owner seems to travel alot, and expects you to be able to find answers to any/all of your questions either in the web sites FAQs or the forum. I left messages/questions, but no returns. BLAH
I was so frustrated I was ready to take and put it back to factory, or do the washer under the needle suggestion.
I took it off and did a complete rebuild and I would suggest the same, regardless of which kit you buy, and my carb is running better. No sense in painting the hallway and not the bathroom!!
Also my fuel mileage is down from 40 to 32-35, no matter how many turns out. And that hurts. And I'm not a hot rod rider and it's been a few months since install so my wrist isn't to blame.
You have to ask yourself what's the goal. If it's just to get the carb running better and performance isn't the goal, just use a quality rebuild
kit.
I have a CV-Performance Deluxe kit and it's ok. The quality seemed good, but..... in the end I'm not so sure.
I'm not fond of the lighter spring as it makes the throttle twitchy in the slow speed stuff. Performance wise it's not much different than the stock set up, but it is smoother. But it was hard to set up. The needle jet takes a lot of attempts to get the carb to be smooth. (And I bought the EZ needle, but wouldn't recommend it. The actual 'needle' is a different lenth than factory.) At least for me as I'm not used to playing with carbs. Also, not much help from the company if you have a question. All q's have to be done through their forum, so if you need help, it could take a few days, as the owner seems to travel alot, and expects you to be able to find answers to any/all of your questions either in the web sites FAQs or the forum. I left messages/questions, but no returns. BLAH
I was so frustrated I was ready to take and put it back to factory, or do the washer under the needle suggestion.
I took it off and did a complete rebuild and I would suggest the same, regardless of which kit you buy, and my carb is running better. No sense in painting the hallway and not the bathroom!!
Also my fuel mileage is down from 40 to 32-35, no matter how many turns out. And that hurts. And I'm not a hot rod rider and it's been a few months since install so my wrist isn't to blame.
You have to ask yourself what's the goal. If it's just to get the carb running better and performance isn't the goal, just use a quality rebuild
kit.
Last edited by Yachtman; Jun 3, 2010 at 11:36 PM.
Ultimate HDF Member
Joined: Feb 2010
Posts: 8,039
Likes: 1,305
From: Jayhawk Country
I agree about Dyno Jet, they suck. I have bought and have had very good luck with these jet kits from http://www.factorypro.com/. Their kits and tech support is very good.
Cruiser
Joined: Feb 2009
Posts: 144
Likes: 2
When I got my 2000 FLHT I put a EZ mixture screw in. It fell out going down the road so I replaced it and set it and LOCKTITE it in . Now my bike 30 k has a carb cough sometimes and I want to open it out a wee bit. Hope a heat gun and some cussing will let it come loose??
Trending Topics
Road Warrior
Joined: May 2008
Posts: 1,802
Likes: 2
From: Salt Lake City, UT. Dushore, Pa.
Yost Power Tube worked great and usually helps mpg.
http://yostperformance.com/products/...ycles_cv40.php
http://yostperformance.com/products/...ycles_cv40.php
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
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
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
The Best and Worst Harley-Davidson Moves of 2025
Verdad Gallardo
Ultimate HDF Member
Joined: Aug 2008
Posts: 5,413
Likes: 17
From: eastern oklahoma
joe minton who used to write articles for american rider magazine has done many write ups on the mods for the cv carb. using an 88 through 90 sportster needle, knocking out the dummy plug so you can adjust your idle mixture, the correct jet sizes etc. it makes a big difference. remember that rubber diaphragm can be a pain in the butt to get seated properly after replacing the slide. i'm sure if you google "joe minton cv carbs" you'll get plenty of information on this subject.
Ultimate HDF Member
Joined: Aug 2008
Posts: 5,413
Likes: 17
From: eastern oklahoma
oh by the way, that needle i suggested is for the 1988-1990 (1200) sportster. it's got a different taper which works much better than the stock one in your cv carb which is most likely very lean.