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| 250cc and Above Engine Tech Technical Discussion Forum for 250cc and up Engines |
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#1
08-16-2009, 06:05 PM
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CN250 jetting?
I was very surprised when I opened up the carb on the Coolster and found a 110 main jet in it. I put a 114 in it that I had from one of the Helix buggies. I wonder what the though process is in using such a small jet in a 250. Maybe that's how they get the C.A.R.B. approval on it.
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#2
08-16-2009, 08:03 PM
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hmmm that weird
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MY HELIX -20' maxxis tires -1 1/2in.UNI air filter -gutted exaust -extended lugs -headlights -reflectors -my stickers -adjusted suspension -ground out hubs (to fit on the tires) helix 150
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#3
08-24-2009, 05:08 PM
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My Buggy (CF Moto) had a 108 Main jet
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Thanks, PatNY 2008 HammerHead Super Sport 250cc 32mm Performance Pumper Carburetor Uni Filter Hammerhead Performance Exhaust 145 Main Jet 40 Pilot Jet 1/4 Fuel line Black MRP CDI MRP Performance Coil NGK Iridium Plug Dr.Pulley HIT Clutch White MRP Main Torque Spring Dr.Pulley Variator Dr.Pulley 19gr. Sliders Kenda Front Max 20 x 7-8 Interco Swamp Lite 22 x 11-10
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#4
08-24-2009, 05:11 PM
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was it running lean?
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MY HELIX -20' maxxis tires -1 1/2in.UNI air filter -gutted exaust -extended lugs -headlights -reflectors -my stickers -adjusted suspension -ground out hubs (to fit on the tires) helix 150
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#5
08-24-2009, 05:31 PM
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No, that's when everything was stock. No mods
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Thanks, PatNY 2008 HammerHead Super Sport 250cc 32mm Performance Pumper Carburetor Uni Filter Hammerhead Performance Exhaust 145 Main Jet 40 Pilot Jet 1/4 Fuel line Black MRP CDI MRP Performance Coil NGK Iridium Plug Dr.Pulley HIT Clutch White MRP Main Torque Spring Dr.Pulley Variator Dr.Pulley 19gr. Sliders Kenda Front Max 20 x 7-8 Interco Swamp Lite 22 x 11-10
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#6
08-24-2009, 05:59 PM
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cool!!!
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MY HELIX -20' maxxis tires -1 1/2in.UNI air filter -gutted exaust -extended lugs -headlights -reflectors -my stickers -adjusted suspension -ground out hubs (to fit on the tires) helix 150
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#7
08-01-2010, 01:10 PM
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hey patny im in newburgh ny is your buggy running rich with the set up in the carb?
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#9
08-10-2010, 09:35 AM
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to small
do any mods will run lean
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olderthan 2008 tomberline punisher 1500 spring 12g sliders 30mm cv pumper carb uni filter no rev cdi polaris xlt snowmobile shocks for front w/550 magnum springs & blaster fronts on rear and another buggy built working on mods gk-13 white spring 17 gram sliders so far
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#10
08-10-2010, 04:25 PM
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I've heard from a few folks that they put small jets in for emissions. Dont know if thats true but it's a though.
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#11
08-10-2010, 07:07 PM
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Too lean of a mixture puts out pollutants as well. To get past epa fuel has to be burned as completely as possible. Unburnt fuel puts out hydrocarbons , but too lean mixture puts out another polutant for which I forget the name. TOM
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#12
08-10-2010, 08:48 PM
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If you dont remember the name then it dont count Tom. LOL
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