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15 Results Found For "ratio"

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DIYAutoTune Smart Coils

DIYAutoTune Smart Coils by AMP EFI produce CDI-level spark energy--without a CD ignition module. They're manufactured with a 19 amp IGBT ignitor built in and can be driven with a 5 V logic level output. Normally, you would use Smart Coils for distributor-less ignitions, such as a coil-per-plug application; however they can be fired sequentially or every crank revolution (wasted spark coil per plug). Smart Coil specs: * Minimum voltage output (no load, at recommended dwell): 40,000 V * Output energy: 103 mJ * Spark duration: 2.9 ms * Primary resistance: 0.5 ohms (not directly measurable) * Primary inductance: 4.8 mH (not directly measurable) * Secondary resistance: 8,500 ohms * Secondary inductance: 22.5 H * Turns ratio: 71.1 * Maximum current: 19 amps * Maximum battery voltage: 17 V * Nominal dwell: 3.0 ms * Maximum recommended duty cycle is 40 percent * Requires HEI-type plug wire ends/boots

4.0 out of 5 stars ( 4 )

$71.00

Allstar Performance High Output Coils

Amp up the spark in your race car with these Allstar Performance high output coils. These ignition coils are designed to from the ground up to give you more spark and better reliability, even under racing conditions. Their sturdy housing is epoxy-filled to help protect against vibration, while their extruded aluminum bracket makes mounting easy. These Allstar Performance high output coils come ready to go with all of the mounting hardware, anti-vibration mounting pads, ring terminals, and a high-temperature silicone boot, so you can get your ride up and running and back on the track.

3.0 out of 5 stars ( 1 )

$52.99

Edelbrock Max-Fire Coil On Plug Ignition Coils

Edelbrock Max-Fire Coil On Plug ignition coils are designed with higher resistance for increased energy output at higher rpm, when compared to an OEM coil. They're ideal for use with turbocharged and supercharged applications or engines that have been converted to E85 fuel. The coils are sealed with a high temperature epoxy for shock and vibration resistance—as well as excellent thermal conductivity. The spark plug spring contact is made from stainless steel, with a ferrite lug to reduce EMI/RFI noise; while the boots are molded from a high temperature silicone compound for superior heat resistance up to 550 degrees F. Order the direct bolt-on OEM coil pack recommended for your vehicle.

4.2 out of 5 stars ( 5 )

$53.95

On Sale

MSD Blaster TFI Coils

MSD Blaster TFI coils powers up your Ford ignition system. With windings and construction similar to MSD's Blaster 2 coils, these coils have an increased turns ratio, plus lower primary resistance than your stock coil. MSD Blaster TFI coils will work with stock TFI ignition systems as well as MSD-equipped cars and trucks. Looking to get a little more output voltage from your Ford ignition system? Just bolt in one of these MSD Blaster TFI coils.

4.37 out of 5 stars ( 144 )

$80.09


$72.08

On Sale

MSD Blaster GM Coils

MSD Blaster coils give your GM maximum voltage output! With windings and construction similar to MSD's Blaster 2 coils, these have an increased turns ratio, plus lower primary resistance than your stock coils. The Blasters will work with stock GM coil ignition systems, as well as MSD-equipped cars and trucks. Looking to get a little more output voltage from your GM ignition system? Just bolt in one of these MSD Blaster Coils.

4.5 out of 5 stars ( 88 )

$80.09


$72.08

$80.55

On Sale

ACCEL SuperStock Ignition Coils

ACCEL SuperStock coils are excellent high-performance coils. They're designed with optimized low resistance and a high turns ratio, for higher energy output. This also results in quicker starts, improved throttle response, and more high-rpm power.

4.86 out of 5 stars ( 94 )

$65.89

$81.05


$50.67

$72.95

On Sale

Holley Sniper EFI Canister Style Ignition Coils

New for the Holley Sniper EFI product line is a factory replacement Sniper EFI canister-style ignition coil. This ignition coil is potted with a premium-grade epoxy, making it perfect for high-vibration environments—and it can be mounted in any direction, even if it's horizontal, vertical, or upside down. "No oil" means "no failure" for multiple mounting positions. The Sniper EFI canister coil is perfect for anyone wanting to upgrade their ignition system, while maintaining a factory look under the hood. Features: * Metal canister is epoxy filled to protect the internal coil windings from high-vibration applications * Improved output coil for electronic ignitions, and MSD ignitions (ballast resistor required for points) * 100:1 turns ratio and lower primary resistance produce high-voltage output

4.33 out of 5 stars ( 6 )

$64.65


$58.19

Sierra Marine Flame-Thrower Ignition Coils

Sierra Marine Flame-Thrower ignition coils upgrade stock coils to something with more wallop! They are 1.5 ohm, with oil-filled canisters, which keep their low-resistance windings secure and cool for reliable long-term performance. Features: * Low resistance and improved turn ratios * Produces the higher voltage needed to run larger spark plug gaps * Added power and better fuel economy * More windings maximize energy and reliability over the full rpm range * Fits existing brackets for easy installation

Not Yet Reviewed

$73.99

Astemo Ignition Control Modules

The most important part of the ignition system, Astemo ignition control modules meet all OE specifications regarding to voltage output, response times, and compactness. Utilizing proper turns ratio, low-resistance copper wiring, and temperature-resistant epoxy, Astemo igniters efficiently convert the 12 V power coming from your vehicle's battery to 20 kV or more, depending on the application. Being able to amplify the power in a quick and efficient manner allows the engine to operate more effectively, reducing emissions, increasing fuel economy, and increasing power. Choose the ignition igniter designed for your vehicle.

Not Yet Reviewed

$59.99

On Sale

MSD Blaster OEM Replacement Coils

When it comes to late model performance parts, nothing beats bolt-on and direct connection components—especially when they improve performance like these new replacement MSD Blaster ignition coils. They're designed with improved materials and windings to produce a stronger spark. This improved spark helps burn the fuel mixture more efficiently, resulting in smooth idle and heightened mid-range rpm power. Choose the OEM replacement designed for your year/make/model application.

4.72 out of 5 stars ( 630 )

$80.55

$85.75


$72.50

$77.18

On Sale

ACCEL GM HEI In-Cap Super Coils

ACCEL HEI in-cap Super Coils provide more high-rpm power and overall performance. Compatible with both original and computer-controlled HEI ignition systems, ACCEL HEI in-cap Super Coils are designed to resist shock and vibration. They have a finned cover that aids cooling, and hardware is included.

4.65 out of 5 stars ( 43 )

$100.95


$77.45

On Sale

ACCEL Mopar Remote Super Coils

ACCEL Mopar Remote Super Coils provide increased performance for Dodge trucks and Jeeps. You get quicker starts, improved idle, crisp throttle response, and higher top rpm power. These coils are compatible with Mopar J-TEC computer-controlled ignitions and are direct bolt-in units.

4.41 out of 5 stars ( 102 )

$78.85


$60.64

On Sale

ACCEL Remote Super Coils

Increase your throttle response, idle quality, and starting with these ACCEL remote Super Coils with included hardware. They feature higher energy output for top rpm power and work as direct bolt-in replacements. Super-charge your vehicle's energy requirements with the ACCEL remote Super Coils designed for it!

4.48 out of 5 stars ( 81 )

$86.77

$89.15


$66.72

$80.24

On Sale

MSD Ford Blaster Coil-on-Plug Ignition Coil Packs

These MSD Ford Blaster Coil-on-Plug ignition coil packs feature a patented winding design and direct bolt-in replacement. The improved spark energy and voltage of the coil packs, combined with their reliability, have made them a favorite of performance enthusiasts. They are designed as direct bolt-in replacement coils for many SOHC Ford V8 modular engines. The housing and installation are the same as the factory coils, but that is where the similarity ends. Inside the MSD coil packs, engineers used better quality materials to assemble the primary and secondary windings. The MSD Ford Blaster Coil-on-Plug ignition coil packs take the spark energy right out of the coil and put it across the plug gap to improve the combustion and output of the engine.

4.74 out of 5 stars ( 364 )

$60.75

ACCEL Ford EEC-IV Super Coils

ACCEL Ford EEC-IV Super Coils offer increased throttle response, idle quality, and starting. Their E-core design maximizes energy and voltage output. ACCEL Ford EEC-IV Super Coils are direct bolt-in and plug-in replacements for use with computerized ignitions and Ford TFI distributors. They'll get you the spark you need and the performance you want.

4.56 out of 5 stars ( 25 )

$86.99

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