Ignition

This item is normally in stock & ships within 1-72 hours.

AEM Inductive "Smart" Coil are for applications that require the ignition coil(s) to have a built-in igniter. (NOT for use with ignition systems that already have external igniter) This is a performance coil also known as the IGN-A1

The tradeoff between adequate spark energy and adequate spark duration ends with AEM’s High-Output Inductive Coils, an inductive coil that delivers CDI-like spark energy and voltage and the long spark duration. Ideal for vehicles running high compression, high RPM, forced induction and/or nitrous engines.

Auto enthusiasts who have forced induction engines, high RPM engines or run nitrous oxide are aware of the compromises that come with using inductive coils instead of converting to a Capacitive Discharge Ignition system (CDI). While inductive coils deliver a long spark duration with simplicity, they lack the energy to adequately ignite the mixture in the combustion chamber of a highly modified performance vehicle. Conversely, CDIs deliver an intense burst of spark energy, but with practically no spark duration, which makes having the proper air/fuel mixture in the combustion chamber paramount for best performance. This compromise ends with AEM’s High-Output IGBT “Smart” Inductive Coils.

AEM’s High-Output, Insulated Gate Bipolar Transistor (IGBT) “Smart” Inductive Coils are designed for use on applications that do not have an external igniter.

AEM High-Output Inductive Coils each deliver over 100mJ of spark energy and a minimum of 40,000 Volts—as much as most CDI systems, without the need for a CDI module. They also provide very long spark duration at full energy, unlike CDI systems and multiple spark systems which fire off small spark events prior to and after their CDI burst to mimic longer spark duration.

Features:
Massive Spark Energy, up to 103 mJ
Incredibly long spark duration, up to 2.9mS
Up to 40kV Output Voltage, without using a CDI
Deliver CDI-like spark energy—No CDI Module needed
Cost less than aftermarket LS1 coils
Can be mounted almost anywhere
Weather and Shockproof design
Can be mounted directly to the Engine

Specs:
Output (no load): 40kV minimum
Output (50pF load): 40kV +/- 10%
Output Energy: 103 mJ +/- 7%
Peak Secondary Current: 102 mA +/- 10%
Arc Duration: 2.9mS +/- 10%
Turns Ratio 71:1
Maximum Current: 19 Amps
Maximum Battery Voltage: 17 Volts
Base Dwell: 3.0 mS
Max Continuous Dwell: 9 mS but don’t exceed 40% duty cycle
Max Intermittent Dwell: 80% duty cycle, 5 seconds maximum
Mating Connector: Packard/Delphi 12162825 “Pull to Seat”
Mating Contacts: Packard/Delphi 12124075 “Pull to Seat”
High Tension Wire Terminal: HEI “spark plug top” Style

Mercury 8M0077473 

This item is normally in stock & sh...

This item is normally in stock & sh...

This item is normally in stock & sh...

This item is normally in stock & ships within 1-72 hours.

AEM Inductive "Dumb" Coils are for applications that do not require the ignition coil(s) to have a built-in igniter. (For use with ignition systems that already have external igniter)

Any enthusiast running boost, nitrous or high RPMs is aware of the trade-offs associated with inductive coils versus converting to a capacitive-type discharge ignition system (CDI). While inductive coils deliver a long spark duration, they lack enough energy to light off the combustion chamber of a modified high-performance vehicle. In contrast, CDIs delivers intense energy but with inadequate spark duration, making the proper mixture in the combustion chamber critical for best performance. This tradeoff ends with AEM’s High-Output “Dumb” Inductive Coils, the first inductive coils that deliver CDI-like spark energy and voltage, and the long spark duration necessary for vehicles running forced induction and nitrous.

AEM High Output Standard Inductive Coil is designed to be used with an external igniter.

AEM High-Output Inductive Coils each deliver over 100mJ of spark energy and a minimum of 40,000 Volts—as much as most CDI systems, without the need for a CDI module. They also provide very long spark duration at full energy, unlike CDI systems and multiple spark systems which fire off small spark events prior to and after their CDI burst to mimic longer spark duration.

Features:
For vehicles with external igniters
Massive Spark Energy, up to 118 mJ
Incredibly long spark duration, up to 3.2mS
Up to 41kV Output Voltage, without a CDI
CDI-like spark energy without the need for a CDI
Less expensive than aftermarket LS1 coils
Robust construction allows them to be mounted almost anywhere
Heavy-duty, weatherproof and shockproof design
Can be installed directly to engine

Specs:
Primary Resistance: 0.5 O +/- 10%
Primary Inductance: 4.8 mH +/- 15%
Secondary Resistance: 8.5 kO +/- 20%
Secondary Inductance: 22.5 H +/- 20%
Output (50pF load): 41 kV +/- 10%
Output Energy: 118 mJ +/- 7%
Peak Secondary Current: 100 mA +/- 7%
Arc Duration: 3.2 mS +/- 10%
Turns Ratio 71:1
Maximum Battery Voltage: 17 Volts
Base Dwell: 3.0 mS
Max Continuous Dwell: 9 mS but don’t exceed 40% duty cycle
Max Intermittent Dwell: 80% duty cycle, 5 seconds maximum
Mating Connector: Packard/Delphi 12162825 “Pull to Seat”
Mating Contacts: Packard/Delphi 12124075 “Pull to Seat”
High Tension Wire Terminal: HEI “spark plug top” Style

This item is normally in stock & ships ...

This item is normally in stock & ships ...

This item is normally in stock & ships ...

HR recommends NGK Spark Plugs for Street, High Performance and Race rotary engine applications. There are a few different options regarding spark plugs for the rotary engine. Let our decade + of hands on experience, testing, retesting & high HP yields do the work for you. We have broken proper plug selection down into an easy to understand, 4 basic categories. Standard, Platinum, Iridium & Competition. (see below)

This NGK BR10EIX spark plug is the IRIDIUM XI. For mostly City/Highway/Race, BridgePorted N/A, high boost turbo, 470 HP, pump gas, 10 heat.

Specification part number breakdown: NGK BR10EIX
B= 14mm Thread Diameter
10= Heat Rating
E= 19mm Thread reach
I= Iridium
X= Booster Gap (Firing End Construction)

STANDARD:::
For N/A & STOCK Turbo 13B engines that want a pure OEM plug for original reasons, zero performance or reliability gains, the rawest form of OEM plug available, one ideal configuration, installs with normal spark plug socket.
- Configuration: Use Two (2) Standard TRAILING (BUR9EQ) & Two (2) Standard LEADING (BUR7EQ) spark plugs per 13B engine... a total of 4 plugs.

PLATINUM:::
For Stock or slightly Modified N/A or Turbo 13B engines. Same as the Standard plugs with slightly increased performance, a few cents more expansive, a little more spark intensity, longer electrode life, a more complete burn, Two ideal configurations, installs with normal spark plug socket.
- Configuration #1 (N/A & Stock Turbo engine w/ a few bolt-ons, stock boost level producing UP TO 220 HP) Use Two (2) Platinum TRAILING (BUR9EQP) & Two (2) Platinum LEADING (BUR7EQP) spark plugs per 13B engine... a total of 4 plugs.
- Configuration #2 (Modified Turbo engine w/ bolt-ons, slightly increased boost levels producing UP TO 260 HP) Use Four (4) Platinum TRAILING (BUR9EQP) & spark plugs per 13B engine... a total of 4 plugs.The colder Trailing plug (heat range 9) provides substantial detention resistance needed to keep the engine "safe" when boost has been increased above stock levels vs's that of the leading plug. (heat range 7) This WILL NOT make extra power however, it will help to protect the engine at higher boost settings.

IRIDIUM XI:::
For N/A & Turbo engines ranging from bone stock to hard-core race. The ultimate in plug performance, max yield, all (4) plugs will use a matching heat rang, the most potent spark, high output, long electrode life, complete burn, about the cost of platinum, superior, requires a thin wall socket to install/remove.
#1 BR7EIX (x4) Mainly City Driving, N/A only, No porting but high performance, 7 Heat.
#2 BR8EIX (x4) Mainly Highway Driving, N/A only, No porting but high performance, 8 Heat.
#3 BR9EIX (x4) City/Highway Driving, Street ported N/A, Non-ported Turbo with slightly increased boost & bolt-ons , 9 Heat.
#4 BR10EIX (x4) City/Highway/Race, BridgePorted N/A, high boost turbo, 470 HP, pump gas, 10 heat

COMPETITION:::
For the most extreme performance, race only, max porting, highest boost, outright race. Short run times, zero street use, hard cold starting.
#1 R6725-10.5 (x4) 10.5 heat
#2 R6725-11.5 (x4) 11.5 heat

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Street, High Performance and Race rotary engine applications. There are a few different options regarding spark plugs for the rotary engine. Let our decade + of hands on experience, testing, retesting & high HP yields do the work for you. We have broken proper plug selection down into an easy to understand, 4 basic categories. Standard, Platinum, Iridium & Competition. (see below)

This NGK BR7EIX spark plug is the IRIDIUM XI. For Mainly City Driving, N/A only, No porting but high performance, 7 Heat.

Specification part number breakdown: NGK BR7EIX
B= 14mm Thread Diameter
7= Heat Rating
E= 19mm Thread reach
I= Iridium
X= Booster Gap (Firing End Construction)

STANDARD:::
For N/A & STOCK Turbo 13B engines that want a pure OEM plug for original reasons, zero performance or reliability gains, the rawest form of OEM plug available, one ideal configuration, installs with normal spark plug socket.
- Configuration: Use Two (2) Standard TRAILING (BUR9EQ) & Two (2) Standard LEADING (BUR7EQ) spark plugs per 13B engine... a total of 4 plugs.

PLATINUM:::
For Stock or slightly Modified N/A or Turbo 13B engines. Same as the Standard plugs with slightly increased performance, a few cents more expansive, a little more spark intensity, longer electrode life, a more complete burn, Two ideal configurations, installs with normal spark plug socket.
- Configuration #1 (N/A & Stock Turbo engine w/ a few bolt-ons, stock boost level producing UP TO 220 HP) Use Two (2) Platinum TRAILING (BUR9EQP) & Two (2) Platinum LEADING (BUR7EQP) spark plugs per 13B engine... a total of 4 plugs.
- Configuration #2 (Modified Turbo engine w/ bolt-ons, slightly increased boost levels producing UP TO 260 HP) Use Four (4) Platinum TRAILING (BUR9EQP) & spark plugs per 13B engine... a total of 4 plugs.The colder Trailing plug (heat range 9) provides substantial detention resistance needed to keep the engine "safe" when boost has been increased above stock levels vs's that of the leading plug. (heat range 7) This WILL NOT make extra power however, it will help to protect the engine at higher boost settings.

IRIDIUM XI:::
For N/A & Turbo engines ranging from bone stock to hard-core race. The ultimate in plug performance, max yield, all (4) plugs will use a matching heat rang, the most potent spark, high output, long electrode life, complete burn, about the cost of platinum, superior, requires a thin wall socket to install/remove.
#1 BR7EIX (x4) Mainly City Driving, N/A only, No porting but high performance, 7 Heat.
#2 BR8EIX (x4) Mainly Highway Driving, N/A only, No porting but high performance, 8 Heat.
#3 BR9EIX (x4) City/Highway Driving, Street ported N/A, Non-ported Turbo with slightly increased boost & bolt-ons , 9 Heat.
#4 BR10EIX (x4) City/Highway/Race, BridgePorted N/A, high boost turbo, 470 HP, pump gas, 10 heat

COMPETITION:::
For the most extreme performance, race only, max porting, highest boost, outright race. Short run times, zero street use, hard cold starting.
#1 R6725-10.5 (x4) 10.5 heat
#2 R6725-11.5 (x4) 11.5 heat

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Street, High Performance and Race rotary engine applications. There are a few different options regarding spark plugs for the rotary engine. Let our decade + of hands on experience, testing, retesting & high HP yields do the work for you. We have broken proper plug selection down into an easy to understand, 4 basic categories. Standard, Platinum, Iridium & Competition. (see below)

This NGK BR8EIX spark plug is the IRIDIUM XI. For mostly Highway Driving, N/A only, No porting but high performance, 8 Heat.

Specification part number breakdown: NGK BR8EIX
B= 14mm Thread Diameter
8= Heat Rating
E= 19mm Thread reach
I= Iridium
X= Booster Gap (Firing End Construction)

STANDARD:::
For N/A & STOCK Turbo 13B engines that want a pure OEM plug for original reasons, zero performance or reliability gains, the rawest form of OEM plug available, one ideal configuration, installs with normal spark plug socket.
- Configuration: Use Two (2) Standard TRAILING (BUR9EQ) & Two (2) Standard LEADING (BUR7EQ) spark plugs per 13B engine... a total of 4 plugs.

PLATINUM:::
For Stock or slightly Modified N/A or Turbo 13B engines. Same as the Standard plugs with slightly increased performance, a few cents more expansive, a little more spark intensity, longer electrode life, a more complete burn, Two ideal configurations, installs with normal spark plug socket.
- Configuration #1 (N/A & Stock Turbo engine w/ a few bolt-ons, stock boost level producing UP TO 220 HP) Use Two (2) Platinum TRAILING (BUR9EQP) & Two (2) Platinum LEADING (BUR7EQP) spark plugs per 13B engine... a total of 4 plugs.
- Configuration #2 (Modified Turbo engine w/ bolt-ons, slightly increased boost levels producing UP TO 260 HP) Use Four (4) Platinum TRAILING (BUR9EQP) & spark plugs per 13B engine... a total of 4 plugs.The colder Trailing plug (heat range 9) provides substantial detention resistance needed to keep the engine "safe" when boost has been increased above stock levels vs's that of the leading plug. (heat range 7) This WILL NOT make extra power however, it will help to protect the engine at higher boost settings.

IRIDIUM XI:::
For N/A & Turbo engines ranging from bone stock to hard-core race. The ultimate in plug performance, max yield, all (4) plugs will use a matching heat rang, the most potent spark, high output, long electrode life, complete burn, about the cost of platinum, superior, requires a thin wall socket to install/remove.
#1 BR7EIX (x4) Mainly City Driving, N/A only, No porting but high performance, 7 Heat.
#2 BR8EIX (x4) Mainly Highway Driving, N/A only, No porting but high performance, 8 Heat.
#3 BR9EIX (x4) City/Highway Driving, Street ported N/A, Non-ported Turbo with slightly increased boost & bolt-ons , 9 Heat.
#4 BR10EIX (x4) City/Highway/Race, BridgePorted N/A, high boost turbo, 470 HP, pump gas, 10 heat

COMPETITION:::
For the most extreme performance, race only, max porting, highest boost, outright race. Short run times, zero street use, hard cold starting.
#1 R6725-10.5 (x4) 10.5 heat
#2 R6725-11.5 (x4) 11.5 heat

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Street, High Performance and Race rotary engine applications. There are a few different options regarding spark plugs for the rotary engine. Let our decade + of hands on experience, testing, retesting & high HP yields do the work for you. We have broken proper plug selection down into an easy to understand, 4 basic categories. Standard, Platinum, Iridium & Competition. (see below)

This NGK BR9EIX spark plug is the IRIDIUM XI. For mostly City/Highway Driving, Street ported N/A, Non-ported Turbo with slightly increased boost & bolt-ons , 9 Heat.

Specification part number breakdown: NGK BR9EIX
B= 14mm Thread Diameter
9= Heat Rating
E= 19mm Thread reach
I= Iridium
X= Booster Gap (Firing End Construction)

STANDARD:::
For N/A & STOCK Turbo 13B engines that want a pure OEM plug for original reasons, zero performance or reliability gains, the rawest form of OEM plug available, one ideal configuration, installs with normal spark plug socket.
- Configuration: Use Two (2) Standard TRAILING (BUR9EQ) & Two (2) Standard LEADING (BUR7EQ) spark plugs per 13B engine... a total of 4 plugs.

PLATINUM:::
For Stock or slightly Modified N/A or Turbo 13B engines. Same as the Standard plugs with slightly increased performance, a few cents more expansive, a little more spark intensity, longer electrode life, a more complete burn, Two ideal configurations, installs with normal spark plug socket.
- Configuration #1 (N/A & Stock Turbo engine w/ a few bolt-ons, stock boost level producing UP TO 220 HP) Use Two (2) Platinum TRAILING (BUR9EQP) & Two (2) Platinum LEADING (BUR7EQP) spark plugs per 13B engine... a total of 4 plugs.
- Configuration #2 (Modified Turbo engine w/ bolt-ons, slightly increased boost levels producing UP TO 260 HP) Use Four (4) Platinum TRAILING (BUR9EQP) & spark plugs per 13B engine... a total of 4 plugs.The colder Trailing plug (heat range 9) provides substantial detention resistance needed to keep the engine "safe" when boost has been increased above stock levels vs's that of the leading plug. (heat range 7) This WILL NOT make extra power however, it will help to protect the engine at higher boost settings.

IRIDIUM XI:::
For N/A & Turbo engines ranging from bone stock to hard-core race. The ultimate in plug performance, max yield, all (4) plugs will use a matching heat rang, the most potent spark, high output, long electrode life, complete burn, about the cost of platinum, superior, requires a thin wall socket to install/remove.
#1 BR7EIX (x4) Mainly City Driving, N/A only, No porting but high performance, 7 Heat.
#2 BR8EIX (x4) Mainly Highway Driving, N/A only, No porting but high performance, 8 Heat.
#3 BR9EIX (x4) City/Highway Driving, Street ported N/A, Non-ported Turbo with slightly increased boost & bolt-ons , 9 Heat.
#4 BR10EIX (x4) City/Highway/Race, BridgePorted N/A, high boost turbo, 470 HP, pump gas, 10 heat

COMPETITION:::
For the most extreme performance, race only, max porting, highest boost, outright race. Short run times, zero street use, hard cold starting.
#1 R6725-10.5 (x4) 10.5 heat
#2 R6725-11.5 (x4) 11.5 heat

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Street, High Performance and Race rotary engine applications. There are a few different options regarding spark plugs for the rotary engine. Let our decade + of hands on experience, testing, retesting & high HP yields do the work for you. We have broken proper plug selection down into an easy to understand, 4 basic categories. Standard, Platinum, Iridium & Competition. (see below)

This NGK BUR7EQP spark plug is the Platinum Mazda factory (Stock/OEM) LEADING spark plug for all 1986-1995 (FC & FD) RX-7s. This resistor/platinum spark plug is recommended for city and highway driving & is used in all the 86-91 N/A, Turbo II & the 93-95 13B-REW twin turbo engine.

Specification part number breakdown: NGK BUR7EQP
B= 14mm Thread Diameter
U= Surface or Semi Surface Discharge Type R= Resistor Type Plug
7= Heat Rating
E= 19mm Thread reach
Q= 4-Ground Electrodes (Firing End Construction)
P= Platinum

STANDARD:::
For N/A & STOCK Turbo 13B engines that want a pure OEM plug for original reasons, zero performance or reliability gains, the rawest form of OEM plug available, one ideal configuration, installs with normal spark plug socket.
- Configuration: Use Two (2) Standard TRAILING (BUR9EQ) & Two (2) Standard LEADING (BUR7EQ) spark plugs per 13B engine... a total of 4 plugs.

PLATINUM:::
For Stock or slightly Modified N/A or Turbo 13B engines. Same as the Standard plugs with slightly increased performance, a few cents more expansive, a little more spark intensity, longer electrode life, a more complete burn, Two ideal configurations, installs with normal spark plug socket.
- Configuration #1 (N/A & Stock Turbo engine w/ a few bolt-ons, stock boost level producing UP TO 220 HP) Use Two (2) Platinum TRAILING (BUR9EQP) & Two (2) Platinum LEADING (BUR7EQP) spark plugs per 13B engine... a total of 4 plugs.
- Configuration #2 (Modified Turbo engine w/ bolt-ons, slightly increased boost levels producing UP TO 260 HP) Use Four (4) Platinum TRAILING (BUR9EQP) & spark plugs per 13B engine... a total of 4 plugs.The colder Trailing plug (heat range 9) provides substantial detention resistance needed to keep the engine "safe" when boost has been increased above stock levels vs's that of the leading plug. (heat range 7) This WILL NOT make extra power however, it will help to protect the engine at higher boost settings.

IRIDIUM XI:::
For N/A & Turbo engines ranging from bone stock to hard-core race. The ultimate in plug performance, max yield, all (4) plugs will use a matching heat rang, the most potent spark, high output, long electrode life, complete burn, about the cost of platinum, superior, requires a thin wall socket to install/remove.
#1 BR7EIX (x4) Mainly City Driving, N/A only, No porting but high performance, 7 Heat.
#2 BR8EIX (x4) Mainly Highway Driving, N/A only, No porting but high performance, 8 Heat.
#3 BR9EIX (x4) City/Highway Driving, Street ported N/A, Non-ported Turbo with slightly increased boost & bolt-ons , 9 Heat.
#4 BR10EIX (x4) City/Highway/Race, BridgePorted N/A, high boost turbo, 470 HP, pump gas, 10 heat

COMPETITION:::
For the most extreme performance, race only, max porting, highest boost, outright race. Short run times, zero street use, hard cold starting.
#1 R6725-10.5 (x4) 10.5 heat
#2 R6725-11.5 (x4) 11.5 heat

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Street, High Performance and Race rotary engine applications. There are a few different options regarding spark plugs for the rotary engine. Let our decade + of hands on experience, testing, retesting & high HP yields do the work for you. We have broken proper plug selection down into an easy to understand, 4 basic categories. Standard, Platinum, Iridium & Competition. (see below)

This NGK BUR9EQP spark plug is the Platinum Mazda factory (Stock/OEM) TRAILING spark plug for all 1986-1995 (FC & FD) RX-7s. This resistor/platinum spark plug is recommended for city and highway driving & is used in all the 86-91 N/A, Turbo II & the 93-95 13B-REW twin turbo engine.

Specification part number breakdown: NGK BUR9EQP
B= 14mm Thread Diameter
U= Surface or Semi Surface Discharge Type R= Resistor Type Plug
9= Heat Rating
E= 19mm Thread reach
Q= 4-Ground Electrodes (Firing End Construction)
P= Platinum

STANDARD:::
For N/A & STOCK Turbo 13B engines that want a pure OEM plug for original reasons, zero performance or reliability gains, the rawest form of OEM plug available, one ideal configuration, installs with normal spark plug socket.
- Configuration: Use Two (2) Standard TRAILING (BUR9EQ) & Two (2) Standard LEADING (BUR7EQ) spark plugs per 13B engine... a total of 4 plugs.

PLATINUM:::
For Stock or slightly Modified N/A or Turbo 13B engines. Same as the Standard plugs with slightly increased performance, a few cents more expansive, a little more spark intensity, longer electrode life, a more complete burn, Two ideal configurations, installs with normal spark plug socket.
- Configuration #1 (N/A & Stock Turbo engine w/ a few bolt-ons, stock boost level producing UP TO 220 HP) Use Two (2) Platinum TRAILING (BUR9EQP) & Two (2) Platinum LEADING (BUR7EQP) spark plugs per 13B engine... a total of 4 plugs.
- Configuration #2 (Modified Turbo engine w/ bolt-ons, slightly increased boost levels producing UP TO 260 HP) Use Four (4) Platinum TRAILING (BUR9EQP) & spark plugs per 13B engine... a total of 4 plugs.The colder Trailing plug (heat range 9) provides substantial detention resistance needed to keep the engine "safe" when boost has been increased above stock levels vs's that of the leading plug. (heat range 7) This WILL NOT make extra power however, it will help to protect the engine at higher boost settings.

IRIDIUM XI:::
For N/A & Turbo engines ranging from bone stock to hard-core race. The ultimate in plug performance, max yield, all (4) plugs will use a matching heat rang, the most potent spark, high output, long electrode life, complete burn, about the cost of platinum, superior, requires a thin wall socket to install/remove.
#1 BR7EIX (x4) Mainly City Driving, N/A only, No porting but high performance, 7 Heat.
#2 BR8EIX (x4) Mainly Highway Driving, N/A only, No porting but high performance, 8 Heat.
#3 BR9EIX (x4) City/Highway Driving, Street ported N/A, Non-ported Turbo with slightly increased boost & bolt-ons , 9 Heat.
#4 BR10EIX (x4) City/Highway/Race, BridgePorted N/A, high boost turbo, 470 HP, pump gas, 10 heat

COMPETITION:::
For the most extreme performance, race only, max porting, highest boost, outright race. Short run times, zero street use, hard cold starting.
#1 R6725-10.5 (x4) 10.5 heat
#2 R6725-11.5 (x4) 11.5 heat

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Street, High Performance and Race rotary engine applications. There are a few different options regarding spark plugs for the rotary engine. Let our decade + of hands on experience, testing, retesting & high HP yields do the work for you. We have broken proper plug selection down into an easy to understand, 4 basic categories. Standard, Platinum, Iridium & Competition. (see below)

This NGK BUR7EQ spark plug is the Standard Mazda factory (Stock/OEM) LEADING spark plug for all 1986-1995 (FC & FD) RX-7s. This resistor/platinum spark plug is recommended for city and highway driving & is used in all the 86-91 N/A, Turbo II & the 93-95 13B-REW twin turbo engine.

Specification part number breakdown: NGK BUR7EQ
B= 14mm Thread Diameter
U= Surface or Semi Surface Discharge Type R= Resistor Type Plug
7= Heat Rating
E= 19mm Thread reach
Q= 4-Ground Electrodes (Firing End Construction)

STANDARD:::
For N/A & STOCK Turbo 13B engines that want a pure OEM plug for original reasons, zero performance or reliability gains, the rawest form of OEM plug available, one ideal configuration, installs with normal spark plug socket.
- Configuration: Use Two (2) Standard TRAILING (BUR9EQ) & Two (2) Standard LEADING (BUR7EQ) spark plugs per 13B engine... a total of 4 plugs.

PLATINUM:::
For Stock or slightly Modified N/A or Turbo 13B engines. Same as the Standard plugs with slightly increased performance, a few cents more expansive, a little more spark intensity, longer electrode life, a more complete burn, Two ideal configurations, installs with normal spark plug socket.
- Configuration #1 (N/A & Stock Turbo engine w/ a few bolt-ons, stock boost level producing UP TO 220 HP) Use Two (2) Platinum TRAILING (BUR9EQP) & Two (2) Platinum LEADING (BUR7EQP) spark plugs per 13B engine... a total of 4 plugs.
- Configuration #2 (Modified Turbo engine w/ bolt-ons, slightly increased boost levels producing UP TO 260 HP) Use Four (4) Platinum TRAILING (BUR9EQP) & spark plugs per 13B engine... a total of 4 plugs.The colder Trailing plug (heat range 9) provides substantial detention resistance needed to keep the engine "safe" when boost has been increased above stock levels vs's that of the leading plug. (heat range 7) This WILL NOT make extra power however, it will help to protect the engine at higher boost settings.

IRIDIUM XI:::
For N/A & Turbo engines ranging from bone stock to hard-core race. The ultimate in plug performance, max yield, all (4) plugs will use a matching heat rang, the most potent spark, high output, long electrode life, complete burn, about the cost of platinum, superior, requires a thin wall socket to install/remove.
#1 BR7EIX (x4) Mainly City Driving, N/A only, No porting but high performance, 7 Heat.
#2 BR8EIX (x4) Mainly Highway Driving, N/A only, No porting but high performance, 8 Heat.
#3 BR9EIX (x4) City/Highway Driving, Street ported N/A, Non-ported Turbo with slightly increased boost & bolt-ons , 9 Heat.
#4 BR10EIX (x4) City/Highway/Race, BridgePorted N/A, high boost turbo, 470 HP, pump gas, 10 heat

COMPETITION:::
For the most extreme performance, race only, max porting, highest boost, outright race. Short run times, zero street use, hard cold starting.
#1 R6725-10.5 (x4) 10.5 heat
#2 R6725-11.5 (x4) 11.5 heat

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Street, High Performance and Race rotary engine applications. There are a few different options regarding spark plugs for the rotary engine. Let our decade + of hands on experience, testing, retesting & high HP yields do the work for you. We have broken proper plug selection down into an easy to understand, 4 basic categories. Standard, Platinum, Iridium & Competition. (see below)

This NGK BUR9EQ spark plug is the Standard Mazda factory (Stock/OEM) TRAILING spark plug for all 1986-1995 (FC & FD) RX-7s. This resistor/platinum spark plug is recommended for city and highway driving & is used in all the 86-91 N/A, Turbo II & the 93-95 13B-REW twin turbo engine.

Specification part number breakdown: NGK BUR9EQ
B= 14mm Thread Diameter
U= Surface or Semi Surface Discharge Type R= Resistor Type Plug
9= Heat Rating
E= 19mm Thread reach
Q= 4-Ground Electrodes (Firing End Construction)

STANDARD:::
For N/A & STOCK Turbo 13B engines that want a pure OEM plug for original reasons, zero performance or reliability gains, the rawest form of OEM plug available, one ideal configuration, installs with normal spark plug socket.
- Configuration: Use Two (2) Standard TRAILING (BUR9EQ) & Two (2) Standard LEADING (BUR7EQ) spark plugs per 13B engine... a total of 4 plugs.

PLATINUM:::
For Stock or slightly Modified N/A or Turbo 13B engines. Same as the Standard plugs with slightly increased performance, a few cents more expansive, a little more spark intensity, longer electrode life, a more complete burn, Two ideal configurations, installs with normal spark plug socket.
- Configuration #1 (N/A & Stock Turbo engine w/ a few bolt-ons, stock boost level producing UP TO 220 HP) Use Two (2) Platinum TRAILING (BUR9EQP) & Two (2) Platinum LEADING (BUR7EQP) spark plugs per 13B engine... a total of 4 plugs.
- Configuration #2 (Modified Turbo engine w/ bolt-ons, slightly increased boost levels producing UP TO 260 HP) Use Four (4) Platinum TRAILING (BUR9EQP) & spark plugs per 13B engine... a total of 4 plugs.The colder Trailing plug (heat range 9) provides substantial detention resistance needed to keep the engine "safe" when boost has been increased above stock levels vs's that of the leading plug. (heat range 7) This WILL NOT make extra power however, it will help to protect the engine at higher boost settings.

IRIDIUM XI:::
For N/A & Turbo engines ranging from bone stock to hard-core race. The ultimate in plug performance, max yield, all (4) plugs will use a matching heat rang, the most potent spark, high output, long electrode life, complete burn, about the cost of platinum, superior, requires a thin wall socket to install/remove.
#1 BR7EIX (x4) Mainly City Driving, N/A only, No porting but high performance, 7 Heat.
#2 BR8EIX (x4) Mainly Highway Driving, N/A only, No porting but high performance, 8 Heat.
#3 BR9EIX (x4) City/Highway Driving, Street ported N/A, Non-ported Turbo with slightly increased boost & bolt-ons , 9 Heat.
#4 BR10EIX (x4) City/Highway/Race, BridgePorted N/A, high boost turbo, 470 HP, pump gas, 10 heat

COMPETITION:::
For the most extreme performance, race only, max porting, highest boost, outright race. Short run times, zero street use, hard cold starting.
#1 R6725-10.5 (x4) 10.5 heat
#2 R6725-11.5 (x4) 11.5 heat

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...

HR recommends NGK Spark Plugs for Stree...