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What is best Main/Pilot jet for Sporty+cone mod? (Read 171 times)
djpennin
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What is best Main/Pilot jet for Sporty+cone mod?
11/08/09 at 05:51:11
 
i recently did the cone air filter mod + sportster exhaust.

my bike isnt running so well anymore.  when i first start it sputters alot, and i noticed the pipe is getting super blue (is that from heat?)

it's a 1996 , and i'm in Austin,TX

can anyone recommend:

Main Jet size ??
Pilot Jet size ??
Pilot with holes (swiss cheese) or without?
And Number turns for Air/Idle mixture (i know this will differ, but should i just use 1.5 as starting point)

thanks all!

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Yonuh Adisi FSO
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #1 - 11/08/09 at 14:53:49
 
With the air cleaner and muffler mod you have leaned out even further than the manufacturer did, so yes, you need to adjust the carb or replace jets or both. I am in New Mexico and I have a Jardine with a K&N air filter. I have 52.5 pilot and a 152.5 main with the air/fuel screw turned out about 1 and a half and she runs pretty good on that.

My elevation is just under 5000 ft.

But please do not think that my set-up would be ideal for you, it depends a lot on riding style and elevation.
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Check out Flight of Destiny http://www.amazon.com/dp/B00H9130XC
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Rocco
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #2 - 11/09/09 at 10:19:59
 
i have the debaffled sporty muffler and reg k&n filter on my '95 in south florida.

52.5 pilot and mine already had the 152.5 in there, so we left the needle as is....runs so much better now!

she didn't sputter, but her backfire got worse(u'd think i'd love that!!) but i knew it wasn't good for her heart lol and i'm not sure how the pipe did as it's wrapped....

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'95 bobber rat...i guess it's a "bat bike" haha flat black mostly, bare metal tank, header wrap, always a work in progress !
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NewThumperGuy
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #3 - 11/09/09 at 13:40:36
 
Just as another tid bit of info, I'm at 200m, 52.5 pilot no holes, and 150 main with screw 1/4 turn back from alll the way out. I had the 152.5 main in back when I was having your problems and she screamed at WOT!  Grin
so be sure to keep it in and work on adjusting the others  Wink

NTG
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97 LS650 T
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djpennin
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #4 - 11/09/09 at 14:32:37
 
I'm pulling the bottom of the carb off tonight to take a look.

i found that i had a 152.5 main laying around so we'll see what i have in there.

thanks
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #5 - 11/09/09 at 16:03:57
 
Hey Guys I know this question has been beaten to death but what pilot and main jets did a 1995 Savage come with from the factory?
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1995 Savage
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djpennin
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #6 - 11/09/09 at 17:35:12
 
So i looked at everything and the main jet was 145 and pilot is 52.5.

So i put in the 145, is still runs greatbut at idle or when slowing dow it sputters an backfires. I have the screw out 2 turns now, still pretty crappy

any ides?
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djpennin
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #7 - 11/13/09 at 08:51:39
 
so the main was a 140
the pilot was 52.5

i changed the main to 152
the pilot stayed 52.5

bike still runs chopper from closed to 1/2 throttle.

do i need to increase the pilot?

dan
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BurnPgh
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #8 - 11/13/09 at 16:46:46
 
do anything with the white spacer?
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Rocco
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #9 - 11/13/09 at 21:45:45
 
i left the white spacer alone completely...we just put in a bigger pilot
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'95 bobber rat...i guess it's a "bat bike" haha flat black mostly, bare metal tank, header wrap, always a work in progress !
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BurnPgh
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Re: What is best Main/Pilot jet for Sporty+cone mo
Reply #10 - 11/13/09 at 22:49:08
 
I really recommend cutting down the spacer. I personally havent settled on 2 or 3 washers in place of the spacer yet but the spacer as it is is no good. Shave it down or replace with some washers. You'll be pleasantly surprised.
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