CV Carb mods
Thread Starter
|
Tourer
Joined: Jun 2012
Posts: 393
Likes: 1
From: Southern Indiana
CV Carb mods
If your old school like myself and your bike has a CV carb you would like to modify check this out. www.dudeworld.com.au/ARTICVCARB.HTML
Road Captain
Joined: Jun 2012
Posts: 533
Likes: 2
From: Virginia
W/a DynoJet? And it's jetted such that there's no pinging/carb farts? If so - then you and your machine are a pleasant rarity.
I had a well setup (according to the A/F sniffer in the exhaust pipes) Dynojet in my '98, and pulled it out because I couldn't get more than 40MPG on the highway.
After making numerous dyno pulls, I've found that leaving the slide STOCK (don't drill the transfer port hole out in the bottom, this causes the bike to "hunt" at some part-throttle settings), slightly enrich the mixture screw, use a thinner-tapered needle (like the NOKK from the ealier EVO XLs that didn't have an accelerator pump), increase the size of the primary jet (45 is a good starting point for most stock/mildly modded XLs) will satisfy most bikes' needs.
If you experience pinging at highway-speed rollons, you may need to up the main jet as well.
Glad yours is working better than mine and most that I have personal knowledge of running the DynoJet.
I had a well setup (according to the A/F sniffer in the exhaust pipes) Dynojet in my '98, and pulled it out because I couldn't get more than 40MPG on the highway.
After making numerous dyno pulls, I've found that leaving the slide STOCK (don't drill the transfer port hole out in the bottom, this causes the bike to "hunt" at some part-throttle settings), slightly enrich the mixture screw, use a thinner-tapered needle (like the NOKK from the ealier EVO XLs that didn't have an accelerator pump), increase the size of the primary jet (45 is a good starting point for most stock/mildly modded XLs) will satisfy most bikes' needs.
If you experience pinging at highway-speed rollons, you may need to up the main jet as well.
Glad yours is working better than mine and most that I have personal knowledge of running the DynoJet.
HDF Community Team
Joined: Dec 2011
Posts: 8,585
Likes: 4,019
From: San Diego, CA
W/a DynoJet? And it's jetted such that there's no pinging/carb farts? If so - then you and your machine are a pleasant rarity.
I had a well setup (according to the A/F sniffer in the exhaust pipes) Dynojet in my '98, and pulled it out because I couldn't get more than 40MPG on the highway.
After making numerous dyno pulls, I've found that leaving the slide STOCK (don't drill the transfer port hole out in the bottom, this causes the bike to "hunt" at some part-throttle settings), slightly enrich the mixture screw, use a thinner-tapered needle (like the NOKK from the ealier EVO XLs that didn't have an accelerator pump), increase the size of the primary jet (45 is a good starting point for most stock/mildly modded XLs) will satisfy most bikes' needs.
If you experience pinging at highway-speed rollons, you may need to up the main jet as well.
Glad yours is working better than mine and most that I have personal knowledge of running the DynoJet.
I had a well setup (according to the A/F sniffer in the exhaust pipes) Dynojet in my '98, and pulled it out because I couldn't get more than 40MPG on the highway.
After making numerous dyno pulls, I've found that leaving the slide STOCK (don't drill the transfer port hole out in the bottom, this causes the bike to "hunt" at some part-throttle settings), slightly enrich the mixture screw, use a thinner-tapered needle (like the NOKK from the ealier EVO XLs that didn't have an accelerator pump), increase the size of the primary jet (45 is a good starting point for most stock/mildly modded XLs) will satisfy most bikes' needs.
If you experience pinging at highway-speed rollons, you may need to up the main jet as well.
Glad yours is working better than mine and most that I have personal knowledge of running the DynoJet.
John
Road Captain
Joined: Jun 2012
Posts: 533
Likes: 2
From: Virginia
It seems to run fine and the plug insulators nice and tan. I do have my idle mix at 3 1/8 (or maybe 3 1/4) which stopped the carb popping, although when cold it of course coughs a little as expected. Can't recall it pinging ever, but I'm only 165 lbs and live on the coast, so not a lot of hillclimbs.
John
John
Trending Topics
Road Captain
Joined: Jun 2010
Posts: 568
Likes: 1
From: New Jersey Somerset
I just ordered a cvp premium kit and also a v ductor, ill post a thread with pictures to show anyone interested in it also once I get it done
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
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
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
Grand HDF Member
Joined: Sep 2007
Posts: 4,122
Likes: 43
From: Boise Idaho
I've used both those kits and neither are worth the money and can cause some real headaches. I've found that 2 jets and a needle change do more good than those kits and it works every time. The factory spend a lot of money making the CV run right, why try and reinvent the wheel?
Thread Starter
|
Tourer
Joined: Jun 2012
Posts: 393
Likes: 1
From: Southern Indiana
I've used both those kits and neither are worth the money and can cause some real headaches. I've found that 2 jets and a needle change do more good than those kits and it works every time. The factory spend a lot of money making the CV run right, why try and reinvent the wheel?
The "Factory" made a great carb but with the EPA Restrictions made them run like donkey doo until you modify them.
Once modified and fine tuned they perform very well & just a 1/4 turn in the right direction can make all the difference in the world.
No coughs great idle & smooth off idle acceleration.