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*Twin Cam CV Carb Rejet Suggestions - 1002 days old
These suggestions will also work on EVO carbed models too.
A tried and true for "most" carbs in twin cam bikes for rejetting with intake and exhaust mods would be on the low speed jet 45/46 (46 being the best usually), and on the high speed jet would be 185/190 (190 usually being stock). Install 2 - #4 washers (available in most... Read more
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15,893 -
Mar 10th, 2010 04:52 PM
by glider 
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13,074 -
Sep 3rd, 2009 06:02 PM
by glider
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*Poor Performance With Carb Models - 959 days old
A lot of owners of Harley's that run carburetors have asked a question about poor performance, especially at the upper RPM ranges. The symptoms are that it is starving for fuel and will not accelerate past mid range or a bit higher.
The usual cause for this type of problem is a build up of sediment and scale from the fuel and the... Read more
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8,531 -
Sep 2nd, 2009 07:54 PM
by glider
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CV Carburetor Jet Adjustment/Trouble Shooting - 977 days old
CV Carburetor Jet Adjustment
Our most common question about carburetor and Fuel Injection is "How do I know if my jetting is correct? A typical question might go; " I just added a new motorcycle exhaust system to my bike. Do I need to change the jetting? My exhaust color seems to be fine." Or, "I don't have access to a... Read more
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12,192 -
May 4th, 2009 09:23 AM
by glider
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K&N Filter Upgrade - 876 days old
The K&N air filter for the Screamin’ Eagle assembly is available to upgrade the stage 1 already in use after K&N is not the supplier for the MOCO any longer.
It's part# HD-0800. This air filter replaces the Screamin’ Eagle air filter part number 29442-99B (Blue one). The HD 0800 will replace the following filters 29442-99A - B & C ... Read more
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6,039 -
Jul 12th, 2008 08:03 PM
by Bud White
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Installing Sportster Stage 1 - 768 days old
Here's a tip on installing the stage 1 kit on a sportster posted by our very own Hobbit when he did the upgrade on his sporty.
OK, we all know that making the bike breathe better makes it run better and release the power that the EPA/EU do not want us to have.
You have seen the install for the Pipes to get the exhaust gas... Read more
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4,517 -
Feb 12th, 2008 11:59 AM
by glider
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Sportster CV Carb Rejetting - 977 days old
A bit different than the big twin method..
Best to leave the diaphragm alone in the top of the carb. The slide diaphragm can be tricky to reinstall without pinching the rubber.
The vacuum hole is a particular size in the slide and it is for a reason. It governs the movement of the slide for proper fuel delivery. If it is enlarged to... Read more
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3,412 -
Jul 18th, 2007 09:54 AM
by glider
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CV Carb Circuits - 992 days old
This will give you an idea if you are tuning a CV carb and are having problems with lean area going through the power band just where the different circuits take over from the other circuits.
http://i149.photobucket.com/albums/s45/bills985/CVThrottlepositions1.gif
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2,493 -
Jul 3rd, 2007 10:51 AM
by glider
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CV Carb Rejet Pics - 1002 days old
Here's some pics that show some of the rejet operation and some of the workings of the CV carb...
http://i149.photobucket.com/albums/s45/bills985/CVlinkage.jpg
This pic shows the accelerator pump to the right and the main jet needle in the middle of the throat... ... Read more
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7,856 -
Jun 23rd, 2007 08:54 AM
by glider
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Active Intake - 405 days old
Here's a pic of the active intake on international models. Some have found a plug that is not connected on the Domestic models that gets cable tied and stored when installing a stage 1 intake.
http://i149.photobucket.com/albums/s45/bills985/Activeintake.jpg
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443 -
Feb 9th, 2009 12:18 PM
by glider
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Carb Shoot Out - 407 days old
Here's some interesting info on the different carbs. Comparisons between the popular carbs with flow bench testing.
Carb Shoot out.pdf Link 1
Carb Shoot out.pdf Link 1
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769 -
Feb 7th, 2009 05:54 PM
by glider
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Fouling Plugs - 427 days old
One reason for fouling plugs when everything else checks out is the incorrect installation of the main needle jet assembly. There could be a possibility of the spacer above the needle jet holder being installed improperly.
Look for the dribble of fuel coming out of the needle jet area in the throat of the carb with the motor idling.... Read more
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731 -
Jan 18th, 2009 06:18 PM
by glider
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Sportster Needle - 432 days old
Some people like to use the sportster needle in the later big twin carbs. It's part number 27094-88 and the purpose is to richen up the mixture because the sportster this originally came in did not have an accelerator pump. You may find that using this needle that your MPG will fall off considerably.
Shown in this pic is the spacer... Read more
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603 -
Jan 14th, 2009 07:04 AM
by glider
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Understanding CV Carbs - 432 days old
http://i149.photobucket.com/albums/s45/bills985/CVcarb101.jpg
This is an excellent cut away side view of the Keihin CVK carburetor to help illustrate the different circuits and parts of the carburetor.
A- Air inlet for lower slide chamber (M).
B- Air exit for lower slide chamber (M)
C- Hole... Read more
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4,247 -
Jan 13th, 2009 05:03 PM
by glider
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CV Breakdown Pic - 432 days old
For the CV 40 on top and the CV 51 on the bottom which are pretty much the same except for the throat sizes.
Also another copy here...
CV40_Carb.pdf Link 1
CV40_Carb.pdf Link 2
http://www.bikebandit.com/assets/schematics/Harley-Davidson/HD0533023.gif
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1,931 -
Jan 13th, 2009 01:55 PM
by glider
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Big Sucker Installation - 440 days old
Here's an installation of the Arlen Ness Big Sucker unit that "Bud White" posted for us.
Well today i put on the Big Sucker on my 08 Road King Classic ..
After picking up a o-ring they shorted me one but no biggy hardware store had the size they are small and thin..same as a Screaming eagle so if ya need one and ya got a hardware... Read more
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1,713 -
Jan 5th, 2009 03:00 PM
by glider
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CV Replacement Parts - 446 days old
Some parts for CV carbs that make life easier.
CV Performance Parts
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Dec 30th, 2008 01:53 PM
by glider
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New HD SE Heavy Breather - 504 days old
You all may have seen in the new 2009 Catalogue the Heavy breather systems from Screamin Eagle.
What they fail to tell you is that when you remove the the old filter and the active intake valve you will get a code thrown and the ignition/engine light will stay on.
You will either need to buy a defeater that confuses the ECM to tell it... Read more
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2,441 -
Nov 2nd, 2008 07:39 AM
by Hobbit
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Fuel Inlet Fitting (CV) - 510 days old
Some have had a problem with the plastic fuel inlet fitting on CV carbs leaking/breaking off.
There's a metal replacement available that is a press fit to replace the plastic one there now.
Fuel Inlet Fitting
http://img.jpcycles.com/main/8e375555-e708-4479-9a2d-2b4589cfd77c.jpg
Posted by... Read more
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1,193 -
Oct 27th, 2008 06:27 PM
by glider
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