fits model: Evo, Twin. year: 1992–1999.

( Brand: S-s Cycle ), ( Manufacturer Part Number: 31-6078 ), ( Part Type: Oil Pump ), ( Item Height: 4.50 ), ( Item Length: 7.25 ), ( Country/region Of Manufacture: United States ), ( Universal Fitment: Yes ), ( Vintage Part: No ), ( Finish: Polished ), ( Item Weight: 1.40 ), ( Item Width: 6.25 )
The 31-6078S billet HVHP oil pump by Cycle is a high-performance upgrade for 1992 to 1999 Honda Civic and CR-X models with the VTEC "big twin" engine. This billet aluminum oil pump is designed to provide improved oil flow and pressure to support increased power outputs from forced induction or high-performance modifications.
Compared to the OEM oil pump, the 31-6078S billet version offers several advantages. Its billet construction guarantees superior strength and durability to withstand the demands of high-performance applications. Moreover, the large, 150mm diameter impeller increases oil flow rate, ensuring adequate lubrication for components operating under higher loads and temperatures.
This oil pump features an upgraded driveshaft with larger, stronger bearings and thrust washer, improving the overall reliability and longevity of the system. Additionally, it includes a high-pressure kit, featuring a modified pressure regulator and additional AN fittings, facilitating easy installation and allowing the user to set the desired oil pressure levels.
An added feature of the 31-6078S billet HVHP oil pump is its compatibility with various racing and high-performance oil coolers, providing an efficient way to maintain engine oil temperature under heavy use conditions. When equipped with an oil cooler, this oil pump offers approximately 42 percent more volume flow rate over the stock pump.
In conclusion, the 31-6078S billet HVHP oil pump by Cycle is a crucial upgrade for enthusiasts and racers seeking improved reliability, oil flow, and pressure for their late 90s Honda big twin engines. It caters to the needs of high-output applications, providing peace of mind and the confidence needed to push engine limits further.
Buying a Cycle 31-6078s billet HVHP oil pump for a 1992-1999 Honda Gold Wing with a big twin engine (92-99 evo) can be a worthy investment for certain riders seeking enhanced performance and durability. Let's weigh the pros and cons:
Pros:1. Enhanced Performance: A billet HVHP oil pump delivers more oil pressure compared to the stock oil pump, ensuring proper lubrication for the engine during high-RPM riding and heavy loads. This added pressure results in increased horsepower and torque desired by some riders.
2. Durability: The billet aluminum construction of a high-volume oil pump (HVHP) is more robust and can handle the increased demands placed on the pump during high-performance riding. Upgrading to a billet oil pump can prolong the engine's life by ensuring that it receives the optimal amount of oil.
3. Better Throttle Response: With improved oil pressure comes better throttle response, as the engine's oiling system functions more efficiently when the oil flow is consistent. This can lead to smoother riding and a more enjoyable experience for the rider.
4. Improved Engine Protection: Ensuring proper oil flow and consistent oil pressure helps to protect the engine from wear factors such as overheating, scuffing, and engine knock caused by inadequate lubrication.
5. Aesthetics: A billet oil pump not only enhances the performance of the engine but also adds a visually appealing touch to its appearance.
Cons:1. Cost: The price difference between a stock oil pump and a billet HVHP oil pump is substantial, making this an expensive upgrade for some riders.
2. Installation: Installing a billet HVHP oil pump is a complex process best left to a professional mechanic, as it requires significant modifications to the engine cooling system, oil cooler, and various engine components.
3. Compatibility: Some aftermarket billet HVHP oil pumps may not be compatible with all models, making it essential to verify compatibility before making the purchase.
4. Potential for complications: With any aftermarket part, there is a risk of unforeseen complications during installation and operation. In some cases, these complications may necessitate additional modifications or a return to the stock oil pump.
5. Potential power loss: In a small percentage of cases, installing a high-performance oil pump may cause power loss if the engine's cooling system or air intake is not optimized for the increased demands placed on the engine. This can be mitigated by addressing cooling and intake issues, but it adds an additional cost and complexity.
Conclusion:In summary, upgrading to a Cycle 31-6078s billet HVHP oil pump for a Honda Gold Wing can provide numerous benefits, such as enhanced performance, durable construction, better throttle response, improved engine protection, and an appealing aesthetic touch. However, it comes with some potential downsides, like the high cost, complex installation process, potential compatibility issues, and the risk of complications. If you're an avid rider seeking superior engine performance and durability, the benefits may outweigh the cons. However, if you primarily use your Gold Wing for casual commuting or occasional trips, you may want to consider the installation and maintenance costs before making this upgrade.
THIS IS A VERY GOOD Used PERFORMANCE OIL PUMP POLISHED, FOR 92-99 EVO BIG TWIN HARLEY DAVIDSONS, NO DAMAGE ,COMES COMPLETE.