The N20 runs a NGK 97506 Spark Plug factory, below is a chart with information based on observed results using this plug and its possible upgrade/ replacement alternatives
N2x Plugs:
Plug Model | Heat Range (Based On NGK Standard) | Pre-Ignition / Detonation Protection | Ground Strap Projection Type | Firing Vertical Position In Chamber (mm) | Electrode Material | Compatible Coils | Default Spark Plug Gap (mm) (convert to inches) |
---|---|---|---|---|---|---|---|
NGK 96987 (Discontinued - Replaced By 97506) | 8 | Standard | Extended Projection | 0 | Iridium | OEM & PR | 0.8 |
NGK SILZKBR8C8S (Discontinued - Replaced By SILZKBR8F8S) | 8 | Improved | Standard Projection | 0 | Iridium | OEM & PR | 0.8 |
NGK SILZKBR8F8S (Only Available From BMW Germany or Brazil as 12120042724) | 8 | Improved | Standard Projection | 0 | Iridium | OEM & PR | 0.75 |
NGK 97506 | 8 | Standard | Extended Projection | 0 | Iridium | OEM & PR | 0.8 |
NGK 91784 | 8 | Improved | Standard Projection | -2.75 (Sits further from the piston / higher) | Ruthenium | OEM & PR | 0.8 |
BRISK 2MOR10S | 9 | Enhanced | Standard Projection | -3.6 (Sits further from the piston / higher) | Silver | OEM & PR | 0.4 |
NGK 94201 | 8 | Improved | Standard Projection | -1.6 (Sits further from the piston / higher) | Iridium | Bxx / N63T3 Coil Upgrade ONLY | 0.75 |
NGK 93560 | 9 | Improved | Standard Projection | -3.1 (Sits further from the piston / higher) | Iridium | Bxx / N63T3 Coil Upgrade ONLY | 0.7 |
BRISK 2MOER12YS | 8 | Improved | Standard Projection | -2.75 (Sits further from the piston / higher) | Silver | Bxx / N63T3 Coil Upgrade ONLY | 0.5 |
BRISK 2MOER10S | 9 | Enhanced | Standard Projection | -3.6 (Sits further from the piston / higher) | Silver | Bxx / N63T3 Coil Upgrade ONLY | 0.4 |
Pre-Ignition / Detonation Protection Explained:
Why Projection Type Matters:
Projection is how far from the body / shell of the plug the ground strap and conversely electrode extend. The longer or further away from the plug body they are the better spark efficiency but the greater risk of plug failure or potential engine damage from a hot ground strap causing pre-ignition.
How Much Boost Can These Plugs Handle?
Plug life can vary depending on the application at hand, but typically here are a few things that can reduce plug life:
Plug Recommendations:
Plug Model | Ideal Max Service Life | Max Ideal Boost To Promote Ideal Service Life | Reasoning? |
---|---|---|---|
NGK 96987 (Discontinued - Replaced By 97506) | 25,000 KM @ 0.022 inch Gap | OEM Gap 50,000 KM | 26 PSI @ Sea Level | Extended Projection can lead to causes of pre-ignition in highly boosted applications or race environments followed by plug heat range limitations in the ceramic surviving long highly abusing loads |
NGK SILZKBR8C8S (Discontinued - Replaced By SILZKBR8F8S) | 25,000 KM @ 0.022 inch Gap | OEM Gap 50,000 KM | 30 PSI @ Sea Level | heat range limitations in the ceramic surviving long highly abusing loads |
NGK SILZKBR8F8S (Only Available From BMW Germany or Brazil as 12120042724) | 25,000 KM @ 0.022 inch Gap | OEM Gap 50,000 KM | 30 PSI @ Sea Level | heat range limitations in the ceramic surviving long highly abusing loads |
NGK 97506 | 25,000 KM @ 0.022 inch Gap | OEM Gap 50,000 KM | 26 PSI @ Sea Level | Extended Projection can lead to causes of pre-ignition in highly boosted applications or race environments followed by plug heat range limitations in the ceramic surviving long highly abusing loads |
NGK 91784 | 12,000 KM @ 0.022 inch Gap | OEM Gap 25,000 KM | 30 PSI @ Sea Level | heat range limitations in the ceramic surviving long highly abusing loads |
BRISK 2MOR10S | OEM Gap 10,000 KM | 40 PSI @ Sea Level | heat range limitations in the ceramic surviving long highly abusing loads |
NGK 94201 | 25,000 KM @ 0.022 inch Gap | OEM Gap 50,000 KM | 30 PSI @ Sea Level | heat range limitations in the ceramic surviving long highly abusing loads |
NGK 93560 | 25,000 KM @ 0.022 inch Gap | OEM Gap 50,000 KM | 40 PSI @ Sea Level | heat range limitations in the ceramic surviving long highly abusing loads |
BRISK 2MOER12YS | OEM Gap 15,000 KM | 30 PSI @ Sea Level | heat range limitations in the ceramic surviving long highly abusing loads |
BRISK 2MOER10S | OEM Gap 10,000 KM | 40 PSI @ Sea Level | heat range limitations in the ceramic surviving long highly abusing loads |
Video Explainer: