Yukon blog
Yukon Gear & Axle Toyota Re-Gear Kits
Reclaim Performance in Big-Tire Toyotas Toyota owners can now take advantage of performance-engineered Yukon Gear & Axle gear sets that have been proven at King of the Hammers, the granite crags of Moab, and in Ultra4 competition across the country. Yukon’s convenient ring and pinion Re-Gear Kits bundle everything you need to upgrade your Toyota’s front and rear differentials in one simple part number to save you time. These kits feature premium Yukon ring and pinion gears, Master Install Kits with high-quality Timken/Koyo bearings, and all the small parts you’ll need to get your vehicle back on the road quickly so you can make the most of your time on the trail. There are two main reasons to re-gear your ride. The first is to recapture the lost performance and fuel efficiency of a daily driven vehicle that has been upgraded with larger wheels and tires. The second is to fine tune the performance characteristics of a vehicle that is a dedicated off-roader where the focus is more on low-end grunt and mild acceleration. Yukon’s Toyota gear program covers 1996-and-up 4Runners, ’95-and-up Tacomas, and 2000-and-up Tundras. This offering encompasses popular Toyota differentials like the 8.75” rear, 8” clamshell front, and 8” rear that is featured on countless V6-powered Toyota 4x4s. Toyota 8” diffs are stout and utilize a third-member, dropout-style design, much like the Ford 9” and Chrysler 8.75” unit. This means the carrier and internals of the diff can be easily removed for ring and pinion upgrades. Gear Ratio Explained If you’re adding big tires, you’re technically already re-gearing because the increase in tire circumference changes the final drive ratio. Remember, if your Toyota is running a 4.10 gear, the pinion gear spins 4.1 times to generate one revolution of the ring gear. Further, upsizing tires likely increases the un-sprung weight, or rotating mass, of your rolling stock. This also increases the vehicle’s overall rolling resistance. On the road, your vehicle will take longer to accelerate, turn a lower engine rpm to maintain a highway speed, and get poor gas mileage because of the increase in weight and rolling resistance. Big tires also put a lot of additional stress on the drivetrain, stock braking system, and factory steering components. Re-Gearing Explained A worrisome trend we’ve seen is owners who think that since their rig has a six-, seven-, or eight-speed transmission they don’t have to upgrade their gear set when they jump up in tire size. The culprit is the increased load of larger tires. It can keep you from realizing the full benefit of the tire upgrade because the transmission won't shift into its higher gears. It's not uncommon to see the transmission hanging out in lower than normal gears at light throttle on the freeway or shuttle shifting while trying to find the right gear. Even if you’re okay with that, the undue stress on the transmission can lead to early failure and a big hit to your wallet. Changing ring and pinion gears is the answer. Understanding Different Ratios Gear talk can be confusing. Wheelers have different ways of talking about the same thing—tall gears, high gears, low gears, deep gears. Tall gears produce a lower numeric ratio such as 3.08 or 3.73, while short or deep gears refer to higher numeric ratios such as 4.88 or 5.29. Numerically higher gear ratios produce more torque, quicker acceleration, and lower top speed. Lower numeric ratios produce less torque, slower launches, and higher top speed. The wrong ratio can reduce fuel economy by forcing the engine to work too hard or spin too fast at freeway speeds. It’s a trade-off. How to Select a Ratio That’s Right for You To pick the right ratio, you need to know your current gear ratio and tire height in stock trim. These values determine engine rpm at a given vehicle speed. The homepage provides calculators for gear ratio, tire height, and engine rpm. Use your stock setup as a baseline to understand how your vehicle behaves from the factory. Enter your new tire diameter and adjust the gear ratio to match stock freeway rpm for factory-like drivability, or tune for more low-end pull or improved fuel mileage depending on your goals. Going big-tire isn’t as simple as making them fit. Larger tires affect acceleration, cruising, and off-road performance. Yukon Re-Gear Kits restore drivability in one complete solution. Call Now 866-631-0196 Shop Toyota Re-Gear Kits Yukon Gear & Axle Toyota Re-Gear Kits Highlights Re-Gear Kits upgrade your Toyota’s front and rear differentials Saves time by bundling everything needed to complete the job correctly Regains lost vehicle performance from big-tire upgrades Includes Yukon ring and pinion gears with premium Timken and Koyo bearings
Yukon at the 2021 King of the Hammers
For 10 years Yukon Gear & Axle has been a part of the toughest one-day race on the planet, King of the Hammers. It began as a group of friends, all heavy off-road builders, that met in the dry desert outside of Joshua Tree, California, just 50 miles east of Los Angeles. In those days it was about climbing the toughest trails over boulders the size of a Volkswagen Bug, and the loser bought the beer. From there the party grew. King of the Hammers is now a city of people from all walks of life. They come in motorhomes, campers, towing motorcycles, quads, side-by-sides, Jeeps, Toyotas, Samurais and even lifted limousines. Making the trek to Johnson Valley is awe-inspiring, it’s the Burning Man of off-road racing. Last year, more than 60,000 people came from all over the world. Some to watch, some to race. On the lakebed, more than 400 teams participated. It was an attendance record for King of the Hammers. This year with COVID issues and California leading the nation in cases, the race went on with heavy mitigation rules. The event didn’t disappoint. The overall crowd was down but only to an estimated 40,000 spectators and again more than 400 race teams participated. King of the Hammers is a full day race, encompassing more than 300 miles through the desert and on trails. Drivers are in their cars by 6 a.m., lining up and waiting for their turn for the green flag. Racing begins at 8 a.m. The fastest cars can finish in five to seven hours with many working all 12 hours before timing out just to finish. For most, there is no podium, just the personal satisfaction of finishing the race. Making the full distance is quite an accomplishment. In Friday’s event, 123 cars started but only 35 finished. Team Yukon is comprised of 12 race teams all in different classes. These are the guys we put our money on to hit a top finish. Beyond that, you can’t turn your head around in the pits and not find a Yukon decal on a car. On the track, teams of race cars begin each race and qualifying run, goosing the throttle over the Yukon Launch, a jump mere yards off the starting line. Yukon is the official sponsor of the 4500 Modified Class and each year owns the real estate in the front row of all racing pits. Each pit flies U.S.A. and Yukon flags to drape the desert with respect. In the Yukon pit, we show up with parts and a full garage to rebuild diffs so we can provide tech assistance to whoever needs it. It doesn’t matter what product they’re running; Jason and Brian were there to fix it. Yukon saved team after team that had broken parts, limited drivetrain experience, and/or no replacement. We get them back on the track saving them from what looked like a long drive home. Ask anyone out there, and they’ll tell you it’s about the racing. The more cars in the race the better. Teams and competitors are friends and willing to help, yet fiercely competitive behind the wheel. When it’s the toughest race in the world, your parts have to be good. Better yet, your parts have to be great. Many manufacturers try King of the Hammers one year and are never seen again. The cars run the desert at speeds of 140 mph and hit boulders and dry waterfalls taller than the walls in your home. Yes, things break, but every year we’re back and the calls keep coming for our parts.
CÓMO FUNCIONA. ACEITE PARA ENGRANAJES & ADITIVOS PARA DESLIZAMIENTO LIMITADO
El siguiente artículo habla acerca de la importancia de utilizar el aceite correcto para los engranajes de tu 4x4. Este artículo es originalmente realizado por el fabricante Yukon Gear & Axle. También habla acerca de los números y que significan. Excelente articulo para esas personas que nos gusta todo lo relacionado con los 4x4 y las modificaciones. Si gustas seguirme en las redes. El aceite para engranajes mantienen lubricados y funcionando los componentes como el set de engranajes de piñón corona , engranajes satelitales y laterales, diferenciales de deslizamiento limitado, ejes, bujes y similares. Los modificadores de fricción son aditivos que mejoran el rendimiento y la eficiencia de los diferenciales de deslizamiento limitado estilo embrague. Es vital entender cómo funcionan estos productos, es clave para mantener lubricada correctamente su línea de transmisión para que funcione en las condiciones más difíciles y dure muchos años. Los números del Aceite para diferencial Yukon recomienda aceite para engranajes 80W-90 GL-5 que no sea sintético en todos los diferenciales. El aceite se clasifica por su valor de viscosidad. Vea un aceite multigrado como un 80W90… El 80W es el valor de viscosidad para el invierno, denotado por W, o más precisamente a 0 grados F. Entonces, un aceite de 80W tiene más viscosidad que un aceite de 60W a 0 grados. El segundo número, 90, se refiere al índice de viscosidad del aceite a 212 grados F, nuevamente un número más alto será más viscoso a la temperatura de operación. Estos números también son función del espesor. Entonces, un aceite de 80W es más espeso que un aceite de 60W. Los aceites multigrado son mezclados con polímeros que reducen el adelgazamiento a medida que aumentan las temperaturas y al mismo tiempo reducen el espesamiento a medida que desciende el mercurio, lo que determina el rango de viscosidad del aceite. En términos generales, un aceite más delgado circula más rápido a través del diferencial o motor durante un arranque en frío. Por el contrario, un aceite más espeso protegerá mejor cuando los engranajes del diferencial generen temperaturas más altas. La designación "GL-5" identifica la cantidad de modificador de fricción a base de azufre que está presente en el aceite. Este modificador químico ayuda al aceite a funcionar bajo presión extrema… como en un LSD. Nota: Debido a su contenido de azufre, el aceite GL-5 está diseñado para usarse únicamente en engranajes de los diferenciales; es demasiado corrosivo para usarse en transmisiones, que requieren una formulación GL-4 más suave porque contienen partes metálicas suaves. Yukon ofrece una serie de aceites para engranajes en una variedad de viscosidades y en mezclas sintéticas y no sintéticas. El único modificador de fricción Los aditivos modificadores de fricción de Yukon se utilizan cuando más fuerza de sujeción es necesitada. Este tipo de producto es solo para diferenciales tipo embrague como el Yukon Dura Grip, no es para deslizamientos limitados impulsados por engranajes como nuestro Spartan Helical LSD. El aditivo modificador de fricción de Yukon protege contra el enganche o desenganche anormal del embrague, lo que garantiza que se mantengan las características óptimas de fricción entre los discos del embrague. Estos aditivos se pueden utilizar para compensar el desgaste de los embragues o para "ajustar" el rendimiento de los paquetes de embrague para una aplicación específica, como vehículos para carreras o para vehículos que pasan muchos días en pistas de carrera. Cabe señalar que es nuestra propia fórmula diseñada y patentada específicamente para los embragues compuestos en los LSD de Yukon. Si utiliza un Dura Grip, no utilice modificadores de grado que se encuentran en las tiendas porque están formulados para los embragues originales. Con aproximadamente una quinta parte de las propiedades abrasivas, estos productos comprados en la tienda funcionarán como una versión diluida de nuestra versión original. Estos productos son vitales para el mantenimiento correcto de su diferencial y saber cómo están calificados y cómo hacen su trabajo es fundamental, para tomar decisiones correctas a la hora del mantenimiento de su vehículo.
