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Yet another Carb Question (Read 163 times)

Chopped Senior Member Offline Hurts Like hell when you shoot yourself! Posts: 499 Stafford, VA Gender:	Yet another Carb Question 02/15/09 at 16:30:12 I bought a 155 and a 152.5 main jet. I couldn't find an upsized pilot jet, but I am wondering if I can put the 155 or 152.5 in without adjusting the pilot and if so, which should I use? Thanks for the help!
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Yet another Carb Question Reply #1 - 02/15/09 at 18:06:53 One side of my pilot snapped off when I tried to pull it. It remains stock to this day, BUT, Pilot is part of the RPM range, not all of it. Theres some overlap, but someone will stop in & explain what part of the RPM range is affected by the pilot & where the main comes into play & so on & so forth..Cmon you smart guys.
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Chopped Senior Member Offline Hurts Like hell when you shoot yourself! Posts: 499 Stafford, VA Gender:	Re: Yet another Carb Question Reply #2 - 02/15/09 at 18:10:01 I am waiting with baited breathe!
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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28644 Tucson Az Gender:	Re: Yet another Carb Question Reply #3 - 02/15/09 at 18:19:02 pilot's the first third of throttle, mostly idle, or a steady, low rpm, cruise.... on acceleration, the slide kicks in, opening the main.
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Re: Yet another Carb Question
Reply #4 - 02/16/09 at 05:43:21

The rough breakdown is...

Pilot: idle to 1/4 throttle (low range)
Needle: 1/4 to 3/4 throttle (midrange)
Main jet: 3/4 to wide open (

There are of course overlaps; the slide opening on its front side affects lean/rich in the low and a bit of the midrange; the pilot circuit actually provides fuel all the way to wide open but after 1/4 throttle it has a very small roll; just to name a few.

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Chopped Senior Member Offline Hurts Like hell when you shoot yourself! Posts: 499 Stafford, VA Gender:	Re: Yet another Carb Question Reply #5 - 02/16/09 at 07:51:29 So it is worth changing the Pilot and the main jet!
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T Mack 1 - FSO Serious Thumper Alliance Member Offline sold 2001 LS650 for a 1986 XLH1100 Posts: 2919 Emmaus,Pa Gender:	Re: Yet another Carb Question Reply #6 - 02/16/09 at 07:57:16 Chopped wrote on 02/16/09 at 07:51:29: So it is worth changing the Pilot and the main jet! All three (pilot jet, needle placemnet and Main jet) need to be adjusted for best operation. And yes, it can be a "trial & error" process for the average joe's.
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Chopped Senior Member Offline Hurts Like hell when you shoot yourself! Posts: 499 Stafford, VA Gender:	Re: Yet another Carb Question Reply #7 - 02/16/09 at 09:38:33 I just pulled the Main and swapped it with the 155. I already did the white spacer mod and I need to take it out on the road and fiddle with the idle screw and see where I sit. I will get back to this in a bit and see if I actually need to replace the Pilot
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Chopped Senior Member Offline Hurts Like hell when you shoot yourself! Posts: 499 Stafford, VA Gender:	Re: Yet another Carb Question Reply #8 - 02/16/09 at 17:07:12 Well road tested the new carb set up and it runs pretty darn good! No more jerkin on decel but still a bit stiff! I tightened the chain a bit... thats probably the reason why so stiff! I will work it out eventually!
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jeepster360 YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 1	Re: Yet another Carb Question Reply #9 - 02/16/09 at 20:54:00 what year is your savage? John
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Chopped Senior Member Offline Hurts Like hell when you shoot yourself! Posts: 499 Stafford, VA Gender:	Re: Yet another Carb Question Reply #10 - 02/17/09 at 07:03:06 2001
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