Volker Iridium plasma arc spark

Volker spark plug electrodes designed in such way to guide the spark to be more concentrated (focused) and create higher intensity plasma arc spark. Below illustration is to understand how the plasma arc spark ignites the air-fuel mixture in high engine compression and make bigger explosion.

(*) Plasma arc spark: Higher intensity electric energy discharge across spark gap.
Below is the real picture of plasma arc spark and it’s not computer simulation, showed that how strong concentrated plasma spark energy guided to across spark gap.

Both Volker Iridium and Volker Iridium racing uses Ø 0.5 mm Super Iridium alloy center electrode and Ø 1.0 mm
Platinum alloy tipped ground electrode as standard.
With Volker Iridium – plasma arc spark also provides:
       •   Up to 37% more horse power and torque output.
       •   More stable ignition and stable solid acceleration.
       •   Prevent mis-fire.
       •   Improves cold and morning initial start.
       •   Cleaner combustion room (sweep away all unburned fuel residual) improved engine life time.
       •   Reduce exhaust emission as combustion efficiency improved.
       •   Reduce fuel consumption.
       •   Save costly catalytic converter.
       •   Maintain longevity secondary ignition parts with 6,000 volt lower energy consumption.

(*) Secondary ignition parts: Ignition coil, spark plug cable and spark plug cap.
With lower 6,000 volt energy consumption means that secondary ignition parts work with less strain, colder working temperature and maintenance free.

Race mechanics always use bigger capacity ignition system which produces up to 120,000 volt to achieve bigger spark. Combination of Volker iridium and high performance ignition system might produce super strong plasma arc which use for most race & high performance engine, stable firing at high RPM and prevent mis-fire. Such combinations have been tested for high performance and heavy modified engine which boosted up to 1,500 hp output.

Volker hi-tech sintering technology

Volker factory is equipped with high technology vacuum sintering facility to produce spark plug ceramic insulator.

Volker Iridium ceramic insulator is formed from ceramic insulator materials. The materials are mixed and formed in extremely clean environment, glaze layering coated and sintered in 1,600 °C vacuum environment.

Ceramic insulator is very critical part for spark plug, especially at the insulator nose which wrapped the iridium electrode receive same great sever high temperature, high cylinder pressure and vibration from engine.

Strict quality control carried 100% check for each piece of Volker iridium ceramic insulator, as following:
       •   Voltage leakage test at room temperature with 60,000 volt energy.
       •   Heat insulation resistance test in 500°C temperature with resistance value should be minimum 1 M?.
       •   Insulation resistance test in room temperature with resistance value should be 50 M? or above.

Volker spark plug tightening torque > installation guide

Volker spark plug recommended tightening torque with torque wrench

Cylinder Head	Tightening torque for spark plug thread
	M10	M12	M14
Aluminum	10 ~ 15	20 ~ 25	25 ~ 30
Cast iron	10 ~ 15	20 ~ 25	20 ~ 40

If torque wrench not available, please follow below methods :
Spark plug with GASKET seat	First tighten by hand and add 90º by torque wrench.
Spark plug with TAPER seat	First tighten by hand and add 15º by torque wrench.

Volker spark plug spark gap

Volker spark plug heat range

Volker spark plug heat range designation is mapped from the spark plug tip working temperature.

Volker Polystyrene (PS) box as Volker Iridium standard packaging.

Problems of ceramic cracks, broken spark plug tips, uneven of spark plug gap, bent spark plug gap, rusty spark plug metal shell are the most common problems and 90%+ possibilities is caused during handling, shipping and stock keeping.

Volker use environment friendly (recyclable) Polystyrene (PS) box for all Volker Iridium spark plugs as standard. Each Volker iridium spark plug is individually packed with PS box. The PS box is drop tested; shocks proofed and prevent attacks from high humid which may cause rust problem.

Volker 2 years / 160000 km limited warranty

The following term and conditions applies:
       a.   Warranty not valid for racing / competition purposes.
       b.   Warranty not valid for modification cars.
       c.   Warranty not valid for incorrect applications.

If you have any question regarding technical matter, please email your question to info@volker-iridium.com.