July 20, 2018, 03:37:47 AM
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Author Topic: 78-1/2 FXE Super Glide  (Read 15820 times)

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July 09, 2018, 05:57:07 PM
Reply #360
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biggum


I’ve had my timing set a variety of ways and the condition always exists.

I’ve also adjusted idle jet and condition remains.

No VOES


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July 09, 2018, 06:20:22 PM
Reply #361
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HDBitchin

Administrator
Do you have the Keihin carb?

If it is subtle or small changes that occasionally give you a sputter or cough then I would rule out the accelerator pump since the accelerator pump is used for rapid or sudden throttle movement. The accelerator pump can be adjusted if it actually is a problem.

Jetting?

This might help if you have the Keihin.

Keihin Carburator Adjustments - DIY

https://hdbitchin.com/index.php?topic=213.0
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July 10, 2018, 03:28:18 AM
Reply #362
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biggum


@Hdbitchin no, S&S B


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July 10, 2018, 05:49:11 AM
Reply #363
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HDBitchin

Administrator
Here is some info on the S&S carbs...

Installation and Jetting for S&S Super B, E and G Series "Shorty" Carb DIY
https://hdbitchin.com/index.php?topic=138.0

The difference in the B is that one has no accelerometer pump. 
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Member of the Motorcycle Riders Foundation


July 11, 2018, 07:09:28 PM
Reply #364
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biggum


Thanks as always

Pulling it apart today - I know - you rebuilt the entire engine but not the carb?!

Anyway, these ports on the side of the main jet housing are for fuel atomization - they are all plugged.

It had a 29.5 intermediate and a 68 main.  I called S&S and they recommended 31/72.  I have a 32/72 so I’ll clean everything up and try that out.

https://uploads.tapatalk-cdn.com/20180712/0489c1b48644b2a6a9c76c974db475ec.jpg
78-1/2 FXE Super Glide



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July 11, 2018, 07:38:21 PM
Reply #365
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j f go

Community Advocate
Are you "Half Measuring" again ? ^*?  LOL. Your getting there. ;D Keep up the good work. ^-^

July 12, 2018, 03:14:46 AM
Reply #366
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biggum


All cleaned up and bigger jets in.  Here is a link to recommended sizes http://www.nightrider.com/biketech/hdcarb_S&S_jetting.htm

Started and warmed up.  With the air cleaner off I could see backfire on cylinder side of butterfly when the stumble pop would occur.

Retarded the timing a bit and that fixed it.  Heading out this morning to test ride.


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July 12, 2018, 08:20:53 AM
Reply #367
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HDBitchin

Administrator
I hope your test ride goes well and it runs better than new!

That Nightrider website is a good one! Used it several times myself.
HDBitchin aka Tank 
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A Business Member of ABATE of AZ
Member of the Motorcycle Riders Foundation


July 12, 2018, 09:34:00 AM
Reply #368
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biggum


Much better but still a little pop/spit here and there.


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