 Jetting ?? Stock pilots are 40's
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Joined: Feb 2012
Posts: 24
Complete Newb
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OP
Complete Newb
Joined: Feb 2012
Posts: 24 |
Ordering Jets after installing TORS, UNI pods, removed air box. I checked to see how it was jetted before ordering. 120 mains, 40 pilots. From what I have read on other posts and checking the jetting calculator I should start with 145 mains. Should I jump up to 42 or 45 pilots?
08 SM, carb version w/ fat tank, blue and silver, AI removed, Short TOR'S, Air box removed, battery relocated and chopped rear fender.
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Re: Jetting ?? Stock pilots are 40's
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Joined: Apr 2009
Posts: 639
Adjunct
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Adjunct
Joined: Apr 2009
Posts: 639 |
I can't access the jet calculator on my phone. But I would think 42's would work fine. Maybe somebody with that set up could chime in too. Might just order them both since jets are cheap so you can experiment. Remember no more than 3 turns out in that set screw.
Blue/White, Battery Relocated, 155/45's, AI removed, Cocktail shakers
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Re: Jetting ?? Stock pilots are 40's
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Joined: Feb 2012
Posts: 24
Complete Newb
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OP
Complete Newb
Joined: Feb 2012
Posts: 24 |
Thanks for the help. Good tip about not going over 3 turns out on the set screw.
08 SM, carb version w/ fat tank, blue and silver, AI removed, Short TOR'S, Air box removed, battery relocated and chopped rear fender.
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Re: Jetting ?? Stock pilots are 40's
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Joined: Jul 2011
Posts: 2,212
Oil Expert
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Oil Expert
Joined: Jul 2011
Posts: 2,212 |
i think 45 will be overkill, you will likley settle at the 42's but as noted they are cheap so order them both start with the oem and go from there. The tors do not open her up a ton, most will be gained by the pods, so i am thinking 2.5 turns on the 42's would get you pretty close.
2007 Speedmaster and miss it!
2013 T-Bird Storm and Luvin it!
Catching a yellow jacket in your shirt at 70 mph can double your vocabulary
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Re: Jetting ?? Stock pilots are 40's
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Joined: Feb 2007
Posts: 23,225 Likes: 62
Fe Butt
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Fe Butt
Joined: Feb 2007
Posts: 23,225 Likes: 62 |
Adjust the pilot screw the right way and if you end up more than 3 turns out go up a size. These bikes come lean from the factory to get through emissions.
Disconnect one plug wire and ground, start the bike and adjust the idle up just enough for the bike to stay running.On the side still firing, turn the mixture screw in until the bike runs rough then back out until it runs rough counting the turns between the 2 points. 1/2 way between those 2 points is the correct setting.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
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Re: Jetting ?? Stock pilots are 40's
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Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
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Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
Quote:
...These bikes come lean from the factory to get through emissions...
That is true, however going to pods will reduce the vacuum demand at idle; as a general rule, stock-cammed 865's with CV carbs & pods (no airbox) can tend to run rich at idle with 45 or 48 pilots jets, without a throttle plate mod.
That said, I run 48 pilots but have TPUSA 813 cams & a few extra tweaks to the CV carbs.
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Re: Jetting ?? Stock pilots are 40's
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Joined: Feb 2012
Posts: 24
Complete Newb
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OP
Complete Newb
Joined: Feb 2012
Posts: 24 |
Great help! Thanks all. I'll start with the 42 pilots and 145 mains and see how much I have to turn out the mixture screws.
08 SM, carb version w/ fat tank, blue and silver, AI removed, Short TOR'S, Air box removed, battery relocated and chopped rear fender.
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Re: Jetting ?? Stock pilots are 40's
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Joined: Feb 2007
Posts: 23,225 Likes: 62
Fe Butt
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Fe Butt
Joined: Feb 2007
Posts: 23,225 Likes: 62 |
Quote:
Quote:
...These bikes come lean from the factory to get through emissions...
That is true, however going to pods will reduce the vacuum demand at idle; as a general rule, stock-cammed 865's with CV carbs & pods (no airbox) can tend to run rich at idle with 45 or 48 pilots jets, without a throttle plate mod.
That said, I run 48 pilots but have TPUSA 813 cams & a few extra tweaks to the CV carbs.
I wasn't suggesting any size pilot but cautioning against guessing in favor of actual adjustment.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
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Re: Jetting ?? Stock pilots are 40's
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Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
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Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
Quote:
...I wasn't suggesting any size pilot but cautioning against guessing in favor of actual adjustment.
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