Q: Do we have a technical support team available? How do I contact them?

A: Yes, we have a dedicated technical support team available to assist with any questions or issues you may have. You can contact them by phone or email, the contact information can be found on our website - email us at info@e-torque.com

Q: What is the Shipment Time Frame?

A: Our standard shipment time frame is XX - XX business days, but this may vary depending on the product and location. Please refer to the product page for more information or contact us for a specific estimate.

Q: Does upgrading my E-Type affect future re-sale values?

A: While upgrading your E-Type may improve its performance and overall value, it may also have an effect on the vehicle's re-sale value. It's important to consider this and weigh it against the benefits of the upgrade.

Q: How has research and development played a part in E-Torque's design?

A: Research and development has played a crucial role in the design of our products. We conduct extensive testing and analysis to ensure that our products meet the highest standards of performance and quality. Our design team works closely with engineers, technicians, and professional drivers to fine-tune and improve our products.

Q: Why was it necessary to design a different cylinder head rather than to simply copy what Jaguar did originally back in the day?

A: While the original Jaguar XK cylinder head was a great design for its time, advancements in technology and materials have allowed us to improve upon it in terms of performance and durability. Our cylinder head design incorporates modern features and materials that help to increase horsepower and torque, and improve overall performance.

Q: What is the difference between a single spark and TwinSpark™ model for the E-TORQUE CylinderHead™?

A: A single spark model has only six spark plugs and eliminates the added expense of the TwinSpark™ ignition system. However, it will require 9 degrees more spark advance, which may present pinging issues when used with moderate- or low-grade fuels. A TwinSpark™ model adds a second set of spark plugs, reducing spark advance and allowing for higher compression ratios when running on street-grade fuel. Power increases of over 100hp have been documented during dyno testing with TwinSpark™ ignition.

Q: Can I upgrade my single spark head to a TwinSpark™ at a later date?

A: Yes, the single spark head can be upgraded to a TwinSpark™ by machining the 2nd set of plug wells at a later date.

Q: Does the TwinSpark™ configuration have any effect on power, fuel consumption, drivability, and emissions?

A: The TwinSpark™ configuration may result in slight improvement in power, fuel consumption, drivability and emissions compared with the single spark configuration.

Q: What is the compression ratio of the 4.2 liter E-TORQUE CylinderHead™?

A: The compression ratio of the 4.2 liter E-TORQUE CylinderHead™ is 8.7:1 (what Jaguar called “9:1”) for single spark and 10:1 for TwinSpark™ configuration

Q: What performance gains can I expect with the E-TORQUE CylinderHead™?

A: Power increases of over 100hp have been documented during dyno testing with S.U. carburetion and cast-iron exhaust manifolds. More performance is possible with other configurations using popular induction and exhaust components.

Q: What is included in the 4.2 liter E-TORQUE CylinderHead™ package?

A: The 4.2 liter E-TORQUE CylinderHead™ package includes a fully assembled Street Performance 4.2 liter E-TORQUE CylinderHead™ with single or TwinSpark™ systems, and the optional Complete Twin Spark Ignition System, CP-Carrillo® high performance connecting rods and pistons, and CP-Carrillo® high performance pistons.

Q: Can I install E-TORQUE CylinderHead™ on my classic jaguar e-type?

A: Yes, E-TORQUE CylinderHead™ is designed to fit and upgrade the 4.2 liter Jaguar XK engine for street performance driving. If you’d like assistance with installation, please consult with our team to discuss our preferred network of restoration shops and installers.

Q: Is E-TORQUE offering any warranty on their products?

A: Yes, E-TORQUE offers a limited warranty on their products. Please contact us for more information.

Q: What is the difference between a single spark and TwinSpark™ cylinder head?

A: A single spark cylinder head has only one set of spark plugs, while a TwinSpark™ cylinder head has two sets of spark plugs. The TwinSpark™ configuration allows for a reduction in spark advance, which allows for higher compression ratios when running on street-grade fuel. This can result in increased power and performance, but also comes with a higher cost.

Q: Can I upgrade my single spark cylinder head to a TwinSpark™ configuration later on?

A: Yes, it is possible to upgrade a single spark cylinder head to a TwinSpark™ configuration by machining the 2nd set of plug wells at a later date. However, this will require additional cost and labor.

Q: Will a single spark cylinder head work with my stock Jaguar XK engine?

A: Yes, a single spark cylinder head will work with a stock Jaguar XK engine. However, it will require 9 degrees more spark advance, which may present pinging issues when used with moderate- or low-grade fuels due to the increase in compression ratio from 8.7:1 (what Jaguar called “9:1”) to 10:1. There will also be a slight loss in power, fuel consumption, drivability, and emissions compared with the TwinSpark™ configuration.

Q: How much power can I expect to gain from installing a TwinSpark™ cylinder head on my Jaguar XK engine?

A: Power increases of over 100hp have been documented during dyno testing with S.U. carburetion and cast-iron exhaust manifolds. More performance is possible with other configurations using popular induction and exhaust components.

Q: Do you offer any additional performance parts to go along with the E-TORQUE CylinderHead™?

A: Yes, we offer optional high-performance connecting rods and pistons from CP-Carrillo® as well as a complete Twin Spark ignition system. These parts can further enhance the performance of your engine when used in conjunction with our CylinderHead™.

Q: Are your products compatible with other brands of cars?

A: Our products are specifically designed and tested for use with Jaguar engines, and we cannot guarantee compatibility with other brands of cars.

Q: How do I install the E-TORQUE CylinderHead™?

A: Installation of our CylinderHead™ should be done by a qualified and experienced mechanic. We recommend consulting with a professional engine builder or mechanic for proper installation and set-up. Please ask us about our preferred partner list of restoration shops + mechanics for installation.

Q: How much does the average sale through Etorque cost?

A: The cost of an average sale through E-Torque varies depending on the product and quantity. Please contact us for more information on pricing.

Q: What should be considered when it comes to liability when buying parts through E-Torque?

A: It is important to consider the warranty and return policy when buying parts through E-Torque. We recommend reviewing these policies before making a purchase.

Q: Where can I find more information and resources about E-Torque?

A: You can find more information and resources about E-Torque on our website and through our partners.

Q: Who should I contact if I have additional questions?

A: Send us an email to info@e-torque.com or fill out a contact form!

Q: Where can I stay up to date on the latest announcements and updates at Etorque?

A: You can stay up to date on the latest E-Torque announcements through our monthly E-Torque email newsletter, as well as by participating in our E-Torque Facebook Group. E-Torque also sends monthly marketing emails that will reference E-Torque’s exclusive developments and product promotions for you and your customers.

Q: How do I obtain your most up to date stocklist?

A: Our most up to date stocklist can be found on our website or by contacting us directly.

Q: Do you own your machining in house?

A: Yes, we own our machining in house.

Q: Will Etorque rework my new or used heads?

A: Yes, E-Torque can rework your new or used heads. Contact us for more information on our rework services.

Q: Why should I choose E-Torque cyl head?

A: E-Torque cylinder heads are designed for maximum performance and durability. Our products are tested and improved through research and development to ensure the best performance for your vehicle.

Q: What is the warranty terms? Is it 90 days or 12 months from date of sale?

A: Our warranty terms vary depending on the product. Please review the warranty information on our website or contact us for more details.

Q: What is the response time for inquiries?

A: Our customer support team aims to respond to inquiries within 24 hours.

Q: What if a damaged part is received during shipping?

A: If you receive a damaged part during shipping, please mail us the order number and describe the damage. Our customer support team will respond with options within 24 hours.

Q: What are the payment terms and what kind of payment do you take?

A: Our payment terms vary depending on the order. We accept major credit cards, PayPal and bank transfers.

Q: Is online payment secure?

A: Yes, online payments are secure on our website.

Q: How do you ship?

A: We ship through major carriers such as UPS, FedEx, and DHL.

Q: Can you ship overnight?

A: Yes, we can ship overnight at an additional cost.

Q: Do we ship outside the U.S.?

A: Yes, we ship internationally.

Q: Do we have a technical support team available? How do I contact them?

A: Yes, we have a technical support team available. You can contact them through email or phone.

Q: What is the Shipment Time Frame?

A: The shipment time frame varies depending on availability, location, and customization.

Q: What is the difference in terms of performance between the original Jaguar XK cylinder head and the one you have designed?

A: Our cylinder head design offers significant improvements in horsepower and torque, as well as better overall performance. We use high-quality materials and advanced manufacturing techniques to create a cylinder head that is stronger, more durable and more efficient than the original.

Q: How much performance does the Twin Spark offer over the Single Spark head?

A: The Twin Spark design offers a noticeable increase in performance over the Single Spark head, with improvements in horsepower and torque. This is achieved by having two spark plugs per cylinder which allows for better combustion and increased engine efficiency.

Q: Will E-Torque store my vehicle information for future purchases and discussions?

A: Yes, we do store customer's vehicle information for future purchases and discussions. This allows us to quickly and easily reference your vehicle's information when providing technical support or discussing potential upgrades.

Q: Will the E-Torque performance products affect emissions compliance?

A: Our products are designed to meet or exceed emissions standards. However, it is important to check with your local laws and regulations before making any changes to your vehicle's emissions system.

Q: How will I know if the E-Torque cylinder head will fit my vehicle (fitment chart)?

A: We have a fitment chart available on our website that lists the specific vehicle models that our cylinder head is compatible with. You can also contact us for assistance in determining if our cylinder head will fit your vehicle.

Q: Will the vehicle Speed Limiter effect the performance upgrade?

A: The vehicle's speed limiter should not have an effect on the performance upgrade. However, if you plan to exceed the factory speed limiter, it's important to check with your local laws and regulations before making any changes to your vehicle.

Q: Are your cylinderheads compatible with E-Type Jaguars and XK Jaguars?

A: Yes, our cylinder heads are compatible with E-Type Jaguars and XK Jaguars.

Q: Can you provide more information on the materials and construction of your cylinderheads?

A: Our cylinderheads are constructed with high-quality materials and precision engineering to provide optimal performance and durability. We use aerospace-grade aluminum for the construction of our cylinderheads which ensures that our product is lightweight and high in strength.

Q: How do your cylinderheads compare in terms of performance to OEM options?

A: Our cylinderheads offer improved performance compared to OEM options. They are designed to increase horsepower, torque, and engine efficiency.

Q: What type of performance gains can I expect from your cylinderheads?

A: You can expect significant gains in horsepower and torque, as well as improved 

engine efficiency. Exact gains will vary depending on your specific vehicle and setup.

Q: Can you provide any customer reviews or testimonials for your cylinderheads?

A: Yes, we have many satisfied customers who have seen positive results from our cylinderheads. We can provide you with customer reviews and testimonials upon request.

Q: How does the price of your cylinderheads compare to similar options on the market?

A: Our cylinderheads are competitively priced. There are currently no similar options on the market.

Q: Do your cylinderheads come with a manufacturer's warranty?

A: Yes, our cylinderheads come with a manufacturer's warranty for added peace of mind.

Q: Are there any special installation instructions or modifications required for your cylinderheads?

A: No, our cylinderheads are designed to be a direct replacement for the OEM option and do not require any special installation instructions or modifications. For detailed instructions, be sure to consult with our technical team before installing.

Q: Will your cylinderheads void my vehicle's warranty?

A: Installing our cylinderheads should not void your vehicle's warranty. However, please check with your specific manufacturer or dealership to confirm.

Q: How long is the lifespan of your cylinderheads?

A: The lifespan of our cylinderheads depends on many factors, such as the quality of maintenance, driving conditions, and usage. However, under normal conditions, our cylinderheads can last for several years.

Q: Are your exhaust systems compatible with E-Type Jaguars and XK Jaguars?

A: Yes, our exhaust systems are compatible with E-Type Jaguars and XK Jaguars.

Q: Can you provide more information on the materials and construction of your exhaust systems?

A: Our exhaust systems are constructed with high-quality stainless steel for durability and longevity. They are engineered to increase horsepower, torque, and engine efficiency.

Q: How do your exhaust systems compare in terms of performance to OEM options?

A: Our exhaust systems offer improved performance compared to OEM options. They are designed to increase horsepower, torque, and engine efficiency.

Q: What type of performance gains can I expect from your exhaust systems?

A: You can expect significant gains in horsepower and torque, as well as improved engine efficiency. Exact gains will vary depending on your specific vehicle and setup.

Q: Can you provide any customer reviews or testimonials for your exhaust systems?

A: Yes, we have many satisfied customers who have seen positive results from our exhaust systems. We can provide you with customer reviews and testimonials upon request.

Q: How does the price of your exhaust systems compare to similar options on the market?

A: Our exhaust systems are competitively priced compared to similar options on the market.

Q: What is a Cold Induction System and how does it work?

A: A Cold Induction System is an aftermarket performance upgrade that increases the amount of air that enters the engine, resulting in improved horsepower and torque. It typically consists of a high-flow air filter, an intake tube and a heat shield to protect the air filter from engine heat. Cold air is denser than warm air, and therefore contains more oxygen. This allows the engine to produce more power.

Q: What are the benefits of upgrading to an E-TORQUE Cold Induction System?

A: Some of the benefits of upgrading to an E-TORQUE Cold Induction System include increased horsepower and torque, improved fuel economy, and a more aggressive engine sound. Additionally, our systems are designed to be a perfect fit for your vehicle, ensuring optimal performance gains.

Q: Can I install a Cold Induction System myself, or do I need a professional?

A: While some customers may choose to install a Cold Induction System themselves, it is generally recommended to have the installation done by a professional mechanic. E-TORQUE provides detailed instructions and technical support to ensure that the installation is done correctly.

Q: What is an Exhaust System and how does it work?

A: An Exhaust System is a series of components that remove harmful gases from the engine and reduce noise. It typically consists of the exhaust manifold, catalytic converter, muffler and tailpipe. The exhaust gases are forced out of the engine by the pistons, and then travel through the exhaust system to the tailpipe where they are released into the atmosphere.

Q: What are the benefits of upgrading to an E-TORQUE Exhaust System?

A: Upgrading to an E-TORQUE Exhaust System can provide a number of benefits, including increased horsepower and torque, improved fuel economy, and a more aggressive exhaust sound. Our exhaust systems are designed to be a perfect fit for your vehicle, ensuring optimal performance gains.

Q: Will an E-TORQUE Exhaust System make my vehicle louder?

A: It depends on the type of exhaust system you choose. Some of our exhaust systems are designed to increase the aggressive sound of your engine, while others are designed to be more subtle. We offer a variety of options to suit your personal preferences.

Q: Does an upgraded Exhaust System have any effect on emissions?

A: Yes, a high-performance exhaust system can have an effect on emissions. E-TORQUE exhaust systems are designed to meet or exceed emissions regulations, and most of our systems are 50-state legal. However, it's always best to check with your local emissions regulations before purchasing.

Q: Do you offer any warranties on your products?

A: Yes, we offer a limited warranty on all of our products. Please refer to our website for specific details on our warranty policy.