installed lollipops rough running
Thread Starter
|
Tourer
Joined: Jul 2012
Posts: 421
Likes: 1
From: louisiana
installed lollipops rough running
It finally stopped raining enough for a ride after installing lollipops in straight drags, bike ran rough. Do I start from zero and tune carb. or is there a short cut to utopia? What usually occurs when lollipops are installed as it relates to carb tuning? Richer ? lean?
I measured valve travel with new high lift valve springs and kit temporarily installed in anticipation of new EV72 cam and found enough clearances and no issue with valve to piston clearance
on my 4 5/8" stroker. Using bike forvwork this week so could not keep cam in as no time for adjustments while working.
I
I measured valve travel with new high lift valve springs and kit temporarily installed in anticipation of new EV72 cam and found enough clearances and no issue with valve to piston clearance
on my 4 5/8" stroker. Using bike forvwork this week so could not keep cam in as no time for adjustments while working.
I
Last edited by Pinetop; Apr 20, 2014 at 07:44 PM. Reason: finish
Road Master
Joined: Nov 2012
Posts: 794
Likes: 1
From: Alvin TX
Are you washers the same size , close don't count ,& where in your pipes did you set them ? also are they just set tight or can you open them /turn side ways to open up the pipe , all these came into play for tuning right , But like outlaw said they will cause restiction
Thread Starter
|
Tourer
Joined: Jul 2012
Posts: 421
Likes: 1
From: louisiana
Are you washers the same size , close don't count ,& where in your pipes did you set them ? also are they just set tight or can you open them /turn side ways to open up the pipe , all these came into play for tuning right , But like outlaw said they will cause restiction
Thread Starter
|
Tourer
Joined: Jul 2012
Posts: 421
Likes: 1
From: louisiana
1 3/4 pipes with harley slip-ons. There was a very noticable change in idle, it was choppy, not smooth as before. All I want is to stop the reversion making my heads look like sewer drains.
Road Captain
Joined: Jan 2007
Posts: 645
Likes: 216
From: Minneapolis
You're getting some inaccurate advice.
Look at the photo below. It is a dyno sheet that shows the difference between open drags, drags with the bolt trick, and drags with a small short baffle.
The reversion wave in the open drags causes the mixture to go way rich in the dip area, so in order to make the bike run decent, you would need to lean out the main jet to the point where it gets too lean on the top end.
When you add the bolt/lolipop, it disrupts the reversion and the a/f will go leaner in the dip area, but stay the same on the top end.
Adding a small baffle will flatten the curve out even more, almost taking out that rich dip.
On this dyno sheet, the jets were not changed. Same main jet.
On the setup you described, (stock headers with open slip on), I would get a set of large Khrome Werks drag pipe baffles, and cut off one or two *****. I have tested these to see what they do to the a/f mixture, and they work very well in flattening out the fuel curve.
The bolt or lolipop really won't affect your idle mixture, make sure that is set properly to begin with.
Look at the photo below. It is a dyno sheet that shows the difference between open drags, drags with the bolt trick, and drags with a small short baffle.
The reversion wave in the open drags causes the mixture to go way rich in the dip area, so in order to make the bike run decent, you would need to lean out the main jet to the point where it gets too lean on the top end.
When you add the bolt/lolipop, it disrupts the reversion and the a/f will go leaner in the dip area, but stay the same on the top end.
Adding a small baffle will flatten the curve out even more, almost taking out that rich dip.
On this dyno sheet, the jets were not changed. Same main jet.
On the setup you described, (stock headers with open slip on), I would get a set of large Khrome Werks drag pipe baffles, and cut off one or two *****. I have tested these to see what they do to the a/f mixture, and they work very well in flattening out the fuel curve.
The bolt or lolipop really won't affect your idle mixture, make sure that is set properly to begin with.
Trending Topics
Road Master
Joined: Jan 2012
Posts: 856
Likes: 9
From: North Carolina
I put 2 inch drag "mufflers" on my FL, pulled the factory baffles and installed lollipops. I never could get it right so I went back to the big 4 inch, baffled mufflers that were on it to begin with. I fooled and fooled with it and eventually threw in the towel.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
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
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
Stellar HDF Member
Joined: Jan 2013
Posts: 2,721
Likes: 103
From: St. Louis, MO
You're getting some inaccurate advice.
Look at the photo below. It is a dyno sheet that shows the difference between open drags, drags with the bolt trick, and drags with a small short baffle.
The reversion wave in the open drags causes the mixture to go way rich in the dip area, so in order to make the bike run decent, you would need to lean out the main jet to the point where it gets too lean on the top end.
When you add the bolt/lolipop, it disrupts the reversion and the a/f will go leaner in the dip area, but stay the same on the top end.
Adding a small baffle will flatten the curve out even more, almost taking out that rich dip.
On this dyno sheet, the jets were not changed. Same main jet.
On the setup you described, (stock headers with open slip on), I would get a set of large Khrome Werks drag pipe baffles, and cut off one or two *****. I have tested these to see what they do to the a/f mixture, and they work very well in flattening out the fuel curve.
The bolt or lolipop really won't affect your idle mixture, make sure that is set properly to begin with.
Look at the photo below. It is a dyno sheet that shows the difference between open drags, drags with the bolt trick, and drags with a small short baffle.
The reversion wave in the open drags causes the mixture to go way rich in the dip area, so in order to make the bike run decent, you would need to lean out the main jet to the point where it gets too lean on the top end.
When you add the bolt/lolipop, it disrupts the reversion and the a/f will go leaner in the dip area, but stay the same on the top end.
Adding a small baffle will flatten the curve out even more, almost taking out that rich dip.
On this dyno sheet, the jets were not changed. Same main jet.
On the setup you described, (stock headers with open slip on), I would get a set of large Khrome Werks drag pipe baffles, and cut off one or two *****. I have tested these to see what they do to the a/f mixture, and they work very well in flattening out the fuel curve.
The bolt or lolipop really won't affect your idle mixture, make sure that is set properly to begin with.
Thread
Thread Starter
Forum
Replies
Last Post
