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Mikuni Pocket Tuner (Read 53 times)

Kris01

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Mikuni Pocket Tuner
04/11/15 at 07:28:29

Just out of curiosity, I was playing with the pocket tuner to figure out what jets it said I need. I trust you guys waaaay more though!

http://www.dansmc.com/carbs2.htm

I seems to me that if you set the temperature then the altitude adjustment will be off and vice versa. Am I reading this wrong? How would you determine altitude AND temperature correctly (ex. 0' ASL and ~70°F)?

There's no problem that a full tank of gas and a sunny day can't fix!

2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor

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Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: Mikuni Pocket Tuner Reply #1 - 04/11/15 at 07:29:17 Wow! Didn't realize the pic is that big! My browser resizes it to a smaller version. Sorry!
Back to top	There's no problem that a full tank of gas and a sunny day can't fix! 2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor IP Logged

Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28637 Tucson Az Gender:	Re: Mikuni Pocket Tuner Reply #2 - 04/11/15 at 08:13:00 Cool,.. I don't need to squint... ...
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verslagen1

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Re: Mikuni Pocket Tuner
Reply #3 - 04/11/15 at 09:09:07

you do one then the other

example, I'm at 500 ft at 80°, I go to big bear at 7000 ft at 60°
for -20° you'll drop from a 150 to a 147.5
so you would need to shift the scale to read 147.5 on the altitude scale.
for 7000 ft you drop from a 147.5 to a 137.5

that's of course you're racing around big bear.
if you're going to big bear, you just go. Cool

F the jets.

Versey's Place
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Kris01

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Eat, sleep, RIDE!

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Tennessee
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Re: Mikuni Pocket Tuner
Reply #4 - 04/11/15 at 11:50:55

I actually printed out that pic to attempt what you're saying! Grin

It makes sense now. So the chart doesn't actually tell you what size jet you need. It's more of a tuning aid if you change altitude/temperature. It assumes you're already jetted correctly. That chart won't do you any good if you're trying to figure out how to correctly jet your carb from stock considering everybody's bike comes from the dealer jetted the same regardless of altitude or temperature differences. Wink

There's no problem that a full tank of gas and a sunny day can't fix!

2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor

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