Technical Info

This page contains a library of knowledge collected over 50 years by Ian Williams Tuning.

Beginners Tips & Tricks

What is sprint kart racing all about?
First start for the day
Tools and some of the basics
Tips and tricks to enjoy karting
Gearing for SA tracks
 

Carburetor Diagrams, Parts Lists and more

Carburetor blow-off valve pressure tester (Walbro and other diaphragm pump type carburetors)
Carburetor Diagram – Mikuni types
Carburetor Diagram – Mikuni HSR 42/45
Carburetor Diagram – Mikuni RS 34/36/38/40 radial slide smoothbores
Carburetor Diagram – Mikuni TM series flatslide
Carburetor Diagram – Mikuni TMX series flatslide
Carburetor Diagram – Mikuni VM series
Mikuni Jet Needles
Mikuni Jetting
Mikuni Manifolds
Mikuni Jets
Mikuni Motorcycle Carburetor Theory 101
Rotax Max FR125 Jetting Chart Explained
Tillotson Carburetor Tuning + Diagram
Walbro Carburetor Tuning + modification
 

Engine Info

Engine Run In Procedure
IAME KA100 Reedjet Engine Info
IAME X30 Engine Info
Rotax FR125 Max
Vortex MiniRok
Yamaha KT100J and KT100S Diagrams
Yamaha KT100J Clutch installation
Yamaha KT100S Clutch installation 
 

Gauges & Tuning

Easitune Tuning Lights
Exhaust Gas Temperature (EGT) and Cylinder Head Temperature (CHT) explained
Spark Plug Heat Ranges explained
MyChron5 Gauges
 

Fuels, Mixing, Oil & Lube

ACCU Mix 2 Stroke Fuel Mixing Container
Lubricant and Fuels
 

Performance

Crank Angle Piston Displacement Tables – 2 stroke
2 Stroke Cylinder Porting – it’s what we do best!
Cyrogenic Treatment of engines and parts
Tillotson Carburetor Methanol conversion
 

Superkarts / Gear Shift Karts / Shifterkarts

Shifter Kart Final Drive Ratios
Shifter Kart Fibreglass Bodywork
Shifter Kart Split Sprockets 
 

Wheels & Tyres

Tyre Temperatures explained
Wheel Patterns explained – US vs Metric vs CRG 
 

Other

Airbox AKA43
Apparel – Suits, Gloves, Boots, Neck Protectors
In-house custom signs and stickers
Magura 908 brake – nolonger available
History of IWT
Hotrods
Temperature conversion chart Deg C / Dec F
 
Get in touch with us to find out more