Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
4 Results Found For "ratio"
Showing In Stock Items. Show All 4 Items.
Davis Unified Ignition Dyna-Batt Batteries
Davis Unified Ignition Dyna-Batt batteries produce more power per pound than any battery on the market. They have the cranking power of wet cell batteries three times their size! This is due to their extremely low internal resistance, which allows for faster, more consistent starting. Dyna-Batt batteries do not have a cold cranking amp rating like other batteries, but have been tested to crank engines with compression ratios as high as 15:1. The reserve capacity of Dyna-Batt batteries is 16 amp hours. They are complete dry cell batteries and can withstand the rigors of high performance and racing environments. Built with corrosion-resistant terminals, they are truly maintenance-free. Dyna-Batt batteries have an excellent storage life and recharge very quickly.
( 50 )
$239.00
Powermaster Street Series Alternators
Powermaster Street Series alternators feature all of the quality construction and dependability the company is famous for. The "electrical generators" are available in a variety of amperages and styles, allowing you to choose the best model for your specific ride and the accessories you run. So whether you need an alternator for your truck, hot rod, muscle car, sport compact, or audio competition vehicle, Powermaster gives you the power needed to get it started and keep it going. These race-inspired alternators offer great output to weight ratio. Here are more product details: For most people, the only alternator rating they're familiar with is the amperage rating. Alternators are spoken of as a 65 amp or 100 amp alternator. When replacing the alternator on the family car, this is probably the only information that's necessary. After all, all one needs is an alternator that matches the original. When building a custom car from the ground up, however, a deeper understanding of the power curve of an alternator is required. Usually a custom pulley or so-called "power pulley" set is used with a performance alternator. A mismatched pulley ratio and alternator will spell trouble, especially at idle speeds where alternator performance is critical. To avoid this, it's important to understand the alternator's capability at slow speeds. An alternator's output is dependent on speed, but this can be deceiving because this output is not linear. Instead, it follows a curve. Each alternator has a unique curve, and at idle small changes in the alternator's speed can make a big difference in its output capacity. Because of the preceding, pulley ratios are very important, especially when using high amperage alternators. The pulley that are supplied with the alternator are matched to the winding and power curve. It's important that any dress-up pulley sets do not deviate from this ratio. Typically, a street driven car should have a pulley ratio of at least 3:1. If the vehicle has an automatic transmission with a low idle and the vehicle spends a lot of time cruising, then a higher pulley ratio—perhaps 3.5:1—should be used. Alternators can take high speeds up to 20,000 rpm for short periods, so overdriving the unit is not a problem. The output of high amp alternators can drop off substantially under 2,400 rotor RPMs. Therefore, Powermaster does not recommend power pulleys with high amp alternators. Powermaster uses a state-of-the-art computer alternator dyno to measure the performance of each alternator they manufacture. Output curves, engine idle speeds, and alternator pulley ratios are carefully considered to assure good drivability at idle and slow cruising speeds.
Not Yet Reviewed
$308.99
XS Power XMAX Series Batteries
XS Power XMAX Series batteries are a line of high performance, 12 V lithium batteries designed for applications that require a significant amount of power, such as car audio competitions, off-road vehicles, and racing. They're known for their lightweight construction, ability to deliver high bursts of power with minimal voltage sag, and superior power-to-weight ratio compared to traditional AGM batteries. The XMAX series is built for intense power demands, offering fast charging and high energy storage. Battery models are available in different strengths, from 800 to 2,200 amps pulse capability. Key features and benefits: * Built for high performance systems, these batteries can provide high current and a substantial amount of power, with models offering up to 30,000 watts of burst power * Lithium-ion technology makes them significantly lighter than traditional batteries, which is a benefit for vehicle performance, especially in racing and off-road applications * XMAX batteries are engineered to provide consistent voltage even under heavy loads, which is critical for maintaining audio system performance or race vehicle power * Vibration and shock resistance: They are designed to withstand rough conditions, making them suitable for the vibrations and G-forces experienced in racing and off-road use * The batteries are designed to recharge quickly, allowing them to be ready for the next high-demand cycle more efficiently * Compared to traditional lead-acid batteries, the lithium-ion technology offers a longer lifespan
Not Yet Reviewed
$1,099.99
CVR Propower Alternators
CVR Propower alternators feature one-wire hookup and double-sealed, low-drag, high-speed bearings. They are available in Denso and Delco styles and a choice of amperages. CVR Propower alternators are track-tested and street-proven for the high performance you demand. Available units include: * Drag racing alternators when weight is not as crucial as amperage; these alternators provide high-output at idle * Small, compact, serious drag racing alternators with the highest amps-to-weight ratio of all CVR alternators * Alternators for Pro Street racers and others with high electrical demands; their oversize bearings make them ideal for racers who count on a durable, long-lasting unit with more amps per pound
( 1 )
$215.99
—
$225.99
