jets
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Novice
Joined: Sep 2012
Posts: 24
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From: park falls, wi
jets
I was looking to rejet my car this winter.and I was wondering how difficult thus might b. I've rejetted a 4 Wheeler in the past, just didn't know how much different a Harley would b.and where would b the best place to buy jets.
HDF Community Team
Joined: Jun 2006
Posts: 12,774
Likes: 2,606
From: san antonio
A Stage I tuning kit from CV performance or the Yost CV40 Master kit. Either or but IMHO, the Yost kit is the better choice as it includes a new emulsion tube and two adjustable needles. The importance of the needle is often overlooked.
http://yostperformance.com/products/...ycles_cv40.php
http://www.cv-performance.com/
http://yostperformance.com/products/...ycles_cv40.php
http://www.cv-performance.com/
Seasoned HDF Member
Joined: Mar 2009
Posts: 24,712
Likes: 9,219
From: Snow Hill, NC
I have a question about this... wouldn't he be able to just change the jet to a .002 over like going from a .43 to .45 and be ok and just turn the mixture screw out a bit, i think 3/4 or is it 3 turns out.. i forget... I did this on my 05 sporty and now just got a 02 Dyna???
Does this yost kit include a bunch of stuff you end up not using in it??? I thought i read that somewhere earlier in another thread???
DJL both for the Info...I say again this is a great community...
Does this yost kit include a bunch of stuff you end up not using in it??? I thought i read that somewhere earlier in another thread???
DJL both for the Info...I say again this is a great community...
HDF Community Team
Joined: Jun 2006
Posts: 12,774
Likes: 2,606
From: san antonio
I have a question about this... wouldn't he be able to just change the jet to a .002 over like going from a .43 to .45 and be ok and just turn the mixture screw out a bit, i think 3/4 or is it 3 turns out.. i forget... I did this on my 05 sporty and now just got a 02 Dyna??? Does this yost kit include a bunch of stuff you end up not using in it??? I thought i read that somewhere earlier in another thread???
DJL both for the Info...I say again this is a great community...
DJL both for the Info...I say again this is a great community...
As for the idle/pilot screw, there is no specific number of turns; you have to give the motor what it wants. 1/4 turn can make the difference between decel popping and no decel popping.
The Yost kit includes a lighter spring and a drill bit to open up the vacuum port to allow quicker throttle response. If one was increasing displacement, head flow, compression or adding cams, the pilot jet would also need to be addressed.
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Seasoned HDF Member
Joined: Mar 2009
Posts: 24,712
Likes: 9,219
From: Snow Hill, NC
#43 or #45 indicates the slow, or pilot jet. Andy is talking about re-jetting for a Stage I upgrade which doesn't usually require an increase in size in the slow jet. The main jet should be bumped up and the needle raised a bit to help the midrange. If you look at the chart, you can see that the pilot jet is out of the picture before 1/4 throttle. However, the needld is in play just off idle way past 3/4 throttle. Needle diameter, taper and clip position are important and will allow some "finer" tuning.
As for the idle/pilot screw, there is no specific number of turns; you have to give the motor what it wants. 1/4 turn can make the difference between decel popping and no decel popping.
The Yost kit includes a lighter spring and a drill bit to open up the vacuum port to allow quicker throttle response. If one was increasing displacement, head flow, compression or adding cams, the pilot jet would also need to be addressed.
As for the idle/pilot screw, there is no specific number of turns; you have to give the motor what it wants. 1/4 turn can make the difference between decel popping and no decel popping.
The Yost kit includes a lighter spring and a drill bit to open up the vacuum port to allow quicker throttle response. If one was increasing displacement, head flow, compression or adding cams, the pilot jet would also need to be addressed.
I might wait on that,,,LOL... i think if i can do a Cams swap on my 07 i can probably handle this...I have a service manual and friends in low places..LOL...Thanks Man...Like i said i did the 43 to 45 jet swap on my 05 XL883 but i remember more useless $hit than that job...I have a pretty good Indy around i might just get the stuff and let him screw with it...
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