What size spark plug does a TTR 90 take?
Iridium IX Spark Plug CR6HIX NGK 7274 10mm x 1.0 Thread Size, 1/2″ Reach (Fits: Yamaha TTR90)
What is the top speed of a TTR 90?
The Yamaha TT-R90 can reach a top speed of approximately 40 mph without any modifications. The exact speed will vary due to many other factors, such as the weight of the rider, tire inflation, terrain type and wind speed and direction.
What should the spark gap be on a motorcycle?
The rule of thumb for the spark plug gap on older engines is coil ignition 0.025 thou and magneto ignition 0.018 – 0.020 thou.Spark plugs are typically designed to have a spark gap which can be adjusted by the technician installing the spark plug, by the simple method of bending the ground electrode slightly…
What should the gap be on spark plugs?
As a plug ages, and the metal of both the tip and hook erode, the gap will tend to widen; therefore experienced mechanics often set the gap on new plugs at the engine manufacturer’s minimum recommended gap, rather than in the center of the specified acceptable range, to ensure longer life between plug changes.
What is the part numbering for brisk spark plugs?
Part numbering for Brisk, NGK and Denso spark plugs is reasonably logical with the trailing digits transposing directly into size in mm. For Champion spark plugs it is a little less logical and is as listed below:
What kind of spark plug does a Yamaha NGK use?
Yamaha Model Type Capacity Year Resistor [?] 2 2CMHS 50 1984-2002 BR5HS 2 A BR6HS 2 B 50 1984- BR5HS 2 B 1985- BR7HS
The rule of thumb for the spark plug gap on older engines is coil ignition 0.025 thou and magneto ignition 0.018 – 0.020 thou.Spark plugs are typically designed to have a spark gap which can be adjusted by the technician installing the spark plug, by the simple method of bending the ground electrode slightly…
As a plug ages, and the metal of both the tip and hook erode, the gap will tend to widen; therefore experienced mechanics often set the gap on new plugs at the engine manufacturer’s minimum recommended gap, rather than in the center of the specified acceptable range, to ensure longer life between plug changes.
Part numbering for Brisk, NGK and Denso spark plugs is reasonably logical with the trailing digits transposing directly into size in mm. For Champion spark plugs it is a little less logical and is as listed below:
What is the pressure between the spark plug gap and ground electrode?
between the spark plug gap (center electrode and ground electrode). 2) Pressure in the combustion chamber at time of spark discharge – Depends on compression and aspiration of the engine. High compression engines and engines with forced induction have higher combustion chamber pressures at time of spark discharge.