In the world of racing car tuning, every component plays a crucial role in achieving peak performance. Among these components, bolts might seem like small details, but they hold the power to make a significant difference in the performance and safety of your vehicle. When upgrading engine connecting rods, many racing enthusiast will encounter difficulties in selecting connecting rod bolts. Should I choose American ARP bolts or Regular bolts? Let's briefly discuss how to choose connecting rod bolts.
Let's take the KingTec Racing EA888 forged connecting rods as an example:
1. Regular bolts
2. ARP 2000 bolts
3. ARP L19 bolts
4. ARP 625+ bolts
Material: Regular bolts are typically made from standard steel or alloy materials with moderate strength and durability.
Strength: With a strength between ARP 8740 and ARP 2000, achieving a tensile strength of 210,000 psi
Performance: With KingTec Racing forged connecting rods, they could support 600-800HP
2 ARP 2000 bolts
Material: ARP 2000 bolts are crafted from a high-grade alloy steel known for its exceptional strength and durability.
Strength: ARP2000 is capable of achieving a tensile strength of 220,000 psi, making them ideal for high-performance applications.
Durability: ARP 2000 bolts undergo rigorous heat treatment processes, ensuring optimal durability under extreme conditions.
Performance: Paired with KingTec Racing forged connecting rods, the horsepower supported is 800+HP
3 ARP L19 bolts
Material: ARP L19 bolts are made from a premium steel alloy with enhanced strength and toughness.
Strength: Capable of delivering a tensile strength at 260,000 psi, These bolts feature higher tensile strength and fatigue resistance than ARP 2000 bolts, suitable for extreme racing conditions.
Durability: ARP L19 bolts are easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture.
Performance: With KingTec Racing forged connecting rods, the horsepower supported is about 1000+HP
4 ARP 625+bolts
Material: ARP 625+ bolts utilize a premium-grade material known for its exceptional strength, toughness, and corrosion resistance.
Strength: These bolts offer the highest tensile strength and fatigue resistance among ARP bolt options, suitable for extreme racing applications.
Durability: Thanks to advanced metallurgy and heat treatment, ARP 625+ bolts are engineered to withstand the harshest racing conditions. Typical tensile strength is 260,000-280,000 psi.
Performance: They provide unmatched clamp load retention, minimal elongation, and superior corrosion resistance, ensuring optimal engine performance and longevity.
You can see that different connecting rod bolts, UTS (Tensile Strength: Ultimate) and the horsepower increase they bring are different.
* The data comes from real and reliable user feedback. We invited many professional customers to test, who are engaged in professional racing competitions and modifications, and collected the results of use and testing by different customers (the test environment uses the same key components, with KingTec Racing’s Forged pistons and forged crankshaft)
For convenience of comparison
Summarized as follows:
Strength: 625+ > L19 > ARP 2000 > Regular Bolt
Price: 625+ > L19 > ARP 2000 >Conventional Bolts
Finally, how to choose connecting rod bolts?
-If you are a mild modification enthusiast and mainly use it in daily life instead of competition, you can choose KingTec Racing connecting rod conventional bolts.
- If you are a professional modification enthusiast, or often participate in speed competitions/drift competitions, mainly participating in competition events, it is recommended to choose
-If you are an extreme modification enthusiast, or a higher-level racing driver/team/club, please choose ARP 625+ connecting rod bolts and match KingTec Racing connecting rods. There is no reason, the reason is: to be the ultimate! Be the best!
In addition, if your engine is 6-cylinder or 8-cylinder, (such as Toyota 1GR/2JZ/2GR, Nissan VQ35DE/VR38DETT/VK45DE, BMW N54/N55/B58/S63, VW VR6/RS7, Mercedes Benz M104/M157, etc.), when you choose ARP bolts, your upgrade cost is a bit higher.
* Connecting rod bolts are related to your horsepower, but they are not the determining factor. Horsepower is ultimately determined by all the accessories of your engine, not just one accessory, such as KingTec Racing forged connecting rods, forged pistons, forged crankshafts, plus some high-performance Accessories for air intake systems, cooling systems, exhaust systems, etc., please pay attention to all your accessories!
Finally, before you upgrade your car, please consult your professional engineer or contact KingTec Racing. We will give you the most professional advice and guidance. Congratulations on getting a high-performance beast!
