There is a lot of tuning information out there, but it's mostly in people's heads. What's available on the internet isn't very organized or consistent. What we've attempted to do here is to consolidate some of our engine tuning setups for the engines we use and have experience with. I encounter a lot of newcomers at the track, and they are all looking for the same thing; a starting point. These guidelines will be a solid place to start. And while fine tuning will always be a part of racing, you will find you won't need to stray too far from basic setups.
Iame X30
CLICK HERE FOR INFO ON THE X30 UPGRADES
TYPE: 2-Stroke, internal balance shaft
INLET: Reed
DISPLACEMENT: 125cc
COOLING: Water cooled, external (axle driven) water pump
CYLINDER: Cast Aluminum, cast iron bore insert
CLUTCH: dry, centrifugal
STARTER: electric starter
EXHAUST: Tuned one-piece pipe
IGNITION: Digital ignition, electronic rev limiter
CARBURETOR: Tillotson HW27A, integrated fuel pump
FUEL: 98 to 112 octane leaded race fuel
PRE-MIX OIL: Motul Kart Grand Prix or Elf HXT909
MAINTENANCE INTERVAL: top end at 8-10 hours, bottom end at 15-20 hours, 25-35 hours with new roller bearings
CLASSES:
Junior (age 11-15) with restricted exhaust header
Senior (age 14+)
Baseline Engine Setup:
NOTES:
iame ka100
TYPE: 2-Stroke
INLET: Reed
DISPLACEMENT: 100cc
COOLING: Air cooled
CYLINDER: Cast Aluminum, cast iron bore insert
CLUTCH: dry, centrifugal
STARTER: electric starter
EXHAUST: Traditional 2-stroke pipe, one piece
IGNITION: Analog ignition
CARBURETOR: Tillotson HW33A, integrated fuel pump
FUEL: 98 to 112 octane leaded race fuel
PRE-MIX OIL: Elf HXT909 (recommended)
MAINTENANCE INTERVAL: top end at 10-15 hours, bottom end at 20-30 hours
CLASSES:
Junior (age 11-15) with restricted exhaust header
Senior (age 14+)
BASELINE ENGINE SETUP:
iame swift
TYPE: 2-Stroke
INLET: Piston Port
DISPLACEMENT: 60cc
COOLING: Air cooled
CYLINDER: Cast Aluminum, cast iron bore insert
CLUTCH: dry, centrifugal
STARTER: electric starter
EXHAUST: Traditional 2-stroke pipe with fixed length
IGNITION: Analog ignition
CARBURETOR: Tillotson HW31A, integrated fuel pump
FUEL: 98 to 112 octane leaded race fuel
PRE-MIX OIL: Elf HXT909 (recommended)
MAINTENANCE INTERVAL: top end at 8-10 hours, bottom end at 20 hours
CLASSES:
Micro (age 7-10) with restricted 16mm exhaust header
Mini (age 9-13)
BASELINE ENGINE SETUP
TYPE: 2-Stroke, internal balance shaft
INLET: Reed
DISPLACEMENT: 125cc
COOLING: Water cooled, internal water pump
CYLINDER: Cast Aluminum, Nikasil coated bore
CLUTCH: dry, centrifugal
STARTER: electric starter
EXHAUST: Tuned pipe with muffler
IGNITION: Digital ignition, programmed timing curves
electronic rev limiter, battery powered ignition
CARBURETOR: Dellorto VHSB34 XS, float bowl carb
FUEL PUMP: Mikuni DF 44-210, external type, crank case pulse powered
FUEL: 93 Octane unleaded
PRE-MIX OIL: Rotax XPS
MAINTENANCE INTERVAL: top end at 15-20 hours, bottom end at 25-40 hours
CLASSES:
Micro (age 7-11) - restricted carb slide, 18mm restricted exhaust header
Mini (age 10-13) - 20mm restricted exhaust header
Junior (age 12-15)
Senior (age 14+) - Senior cylinder with power valve
