Planet Minis

scpbmxer01 · 06-10-2009, 06:29 PM

Im new to the site and man i am glad i found it. I have a lifan 125cc in my ct70 with a sheng wey carb, ive heard good and bad. I need to get this thing jetted the the stock jets are in it now and i have the needle all the way on the top clip i am under 100 feet elevation any help with what jets to run along with air/fuel screw adjustments?

thanks

cdoublejj · 06-10-2009, 10:27 PM

whats wrong with it?

scpbmxer01 · 06-11-2009, 11:38 AM

Its just not jetted correctly. There was a stock 85 main jet in there and it would pop never could get a smooth idle. I have the needle clip on the top position which makes it a little better just looking for a good jet set up.

HymieP · 06-11-2009, 01:07 PM

Use that Sheng Way piece of **** for a boat anchor and call it good. No, really buy a Mikuni or Keihin and never look back. Some of the Chinese crap out there right now is just that, don't waste your time.

scpbmxer01 · 06-11-2009, 03:09 PM

where can i a keihin and what size jets should along with what size carb?

dirtbkr188 · 06-11-2009, 03:19 PM

What size ShengWay carb is it? The 20mm one? The 24mm one? Take a picture of it on the bike and post it up...

scpbmxer01 · 06-11-2009, 04:33 PM

I can't upload from my phone I will from my computer later tonight here are some numbers written on the side

Pckd k-15

K 70gy 6803
0930 0866

2-5 if this helps for now

cdoublejj · 06-11-2009, 04:44 PM

AHP has a 22mm real mikuni for 45 bucks, i got one.

scpbmxer01 · 06-11-2009, 10:37 PM

here is a pic of the carb.

dirtbkr188 · 06-12-2009, 06:49 AM

That's the 20mm ShengWay carb, I use a #90 main jet, a #38 pilot jet, needle clip in the 3rd or 4th notch from the top, and start tuning with the air screw 1-1/2 to 1-3/4 turns OUT from seated. I make the air screw adjustments in 1/4 turn increments, sometimes with the air screw only 3/4 of a turn out from seated to have it run right. I've always found this carb to be easy to tune right out of the box.

scpbmxer01 · 06-12-2009, 10:00 AM

thanks I am going to head down to mdk today and see if they have any jets. Ill let you know how it goes.

scpbmxer01 · 06-12-2009, 02:31 PM

i went with a 95 main and a 38 pilot screw was at 1 turn out and needle on 4th clip from top runs like a champ. just cant figure out clutch adjustment now.

dirtbkr188 · 06-12-2009, 02:36 PM

The main and pilot jets for that ShengWay carb are unique to that carb alone, you would need to get the right jet kits from TrailBikes or a Vendor who sells TrailBikes parts, like...

scpbmxer01 · 06-12-2009, 02:39 PM

i went down to mdk and they had a small selection in stock and the bike seems to run great so i imagine they are the correct parts.

06-10-2009, 06:29 PM	#1 (permalink)
scpbmxer01 PM Newbie Join Date: Sep 2008 Location: rc Posts: 58	ct70 help carb is driving me crazy Im new to the site and man i am glad i found it. I have a lifan 125cc in my ct70 with a sheng wey carb, ive heard good and bad. I need to get this thing jetted the the stock jets are in it now and i have the needle all the way on the top clip i am under 100 feet elevation any help with what jets to run along with air/fuel screw adjustments? thanks

06-10-2009, 10:27 PM	#2 (permalink)
cdoublejj 3rd Gear Member Join Date: Oct 2008 Location: St.Joe MO Posts: 1,367 My Mood:	Re: ct70 help carb is driving me crazy whats wrong with it?

06-11-2009, 11:38 AM	#3 (permalink)
scpbmxer01 PM Newbie Join Date: Sep 2008 Location: rc Posts: 58	Re: ct70 help carb is driving me crazy Its just not jetted correctly. There was a stock 85 main jet in there and it would pop never could get a smooth idle. I have the needle clip on the top position which makes it a little better just looking for a good jet set up.

06-11-2009, 01:07 PM	#4 (permalink)
HymieP 2nd Gear Member Join Date: May 2008 Location: Norman, OK Posts: 300	Re: ct70 help carb is driving me crazy Use that Sheng Way piece of **** for a boat anchor and call it good. No, really buy a Mikuni or Keihin and never look back. Some of the Chinese crap out there right now is just that, don't waste your time.

06-11-2009, 03:09 PM	#5 (permalink)
scpbmxer01 PM Newbie Join Date: Sep 2008 Location: rc Posts: 58	Re: ct70 help carb is driving me crazy where can i a keihin and what size jets should along with what size carb?

06-11-2009, 03:19 PM	#6 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: ct70 help carb is driving me crazy What size ShengWay carb is it? The 20mm one? The 24mm one? Take a picture of it on the bike and post it up...

06-11-2009, 04:33 PM	#7 (permalink)
scpbmxer01 PM Newbie Join Date: Sep 2008 Location: rc Posts: 58	Re: ct70 help carb is driving me crazy I can't upload from my phone I will from my computer later tonight here are some numbers written on the side Pckd k-15 K 70gy 6803 0930 0866 2-5 if this helps for now

06-11-2009, 04:44 PM	#8 (permalink)
cdoublejj 3rd Gear Member Join Date: Oct 2008 Location: St.Joe MO Posts: 1,367 My Mood:	Re: ct70 help carb is driving me crazy AHP has a 22mm real mikuni for 45 bucks, i got one.

06-11-2009, 10:37 PM	#9 (permalink)
scpbmxer01 PM Newbie Join Date: Sep 2008 Location: rc Posts: 58	Re: ct70 help carb is driving me crazy here is a pic of the carb.

06-12-2009, 06:49 AM	#10 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: ct70 help carb is driving me crazy That's the 20mm ShengWay carb, I use a #90 main jet, a #38 pilot jet, needle clip in the 3rd or 4th notch from the top, and start tuning with the air screw 1-1/2 to 1-3/4 turns OUT from seated. I make the air screw adjustments in 1/4 turn increments, sometimes with the air screw only 3/4 of a turn out from seated to have it run right. I've always found this carb to be easy to tune right out of the box.

06-12-2009, 10:00 AM	#11 (permalink)
scpbmxer01 PM Newbie Join Date: Sep 2008 Location: rc Posts: 58	Re: ct70 help carb is driving me crazy thanks I am going to head down to mdk today and see if they have any jets. Ill let you know how it goes.

06-12-2009, 02:31 PM	#12 (permalink)
scpbmxer01 PM Newbie Join Date: Sep 2008 Location: rc Posts: 58	Re: ct70 help carb is driving me crazy i went with a 95 main and a 38 pilot screw was at 1 turn out and needle on 4th clip from top runs like a champ. just cant figure out clutch adjustment now.

06-12-2009, 02:36 PM	#13 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: ct70 help carb is driving me crazy The main and pilot jets for that ShengWay carb are unique to that carb alone, you would need to get the right jet kits from TrailBikes or a Vendor who sells TrailBikes parts, like...

06-12-2009, 02:39 PM	#14 (permalink)
scpbmxer01 PM Newbie Join Date: Sep 2008 Location: rc Posts: 58	Re: ct70 help carb is driving me crazy i went down to mdk and they had a small selection in stock and the bike seems to run great so i imagine they are the correct parts.

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