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Valve Set (JHM), Intake and Exhaust, Heavy Duty, Coated for B6-B7 S4, C6 A6 and C5 allroad w chain 4.2L 40v

SKU: JHM-B6B7S4VS

$995.00

Sale Price $885.55

Details
Details
These JHM Heavy Duty, Coated Intake and Exhaust Valves are included in our Rebuilt Heads for the B6-B7 S4 4.2L V8.

JHM HEAVY DUTY, COATED VALVES FEATURES AND SPECIFICATIONS

Our JHM Heavy Duty performance valves are upgraded in nearly every way over the stock Intake and Exhaust Valves in the B6-B7 S4 4.2L V8. Our JHM HD Performance Valves feature our proprietary valve coating. This coating is a multistage, nitrocarburizing treatment with superior lubricity that also increases corrosion and wear resistance. This makes the JHM HD Performance Valves exactly what you want the surface of your valves to be: slippery, hard, and tough.

Additionally, the stock valves have almost ZERO margin which makes them nearly impossible to service unless you were regrinding super low mileage valves. However, there's really no reason to ever do that. Our JHM HD Performance Valves feature more margin for longer serviceability and longer life. This allows for a greater possibility of being able to regrind your JHM Valves during a future rebuild (depending on mileage). The larger margin also gives the valves more durability to withstand the heat of high performance or boosted applications.

We also beefed up the Intake Valve Stem in response to the high rate of Intake Valve failure we have seen. Stock, these intake valves break very easily at the stem and cause catastrophic damage to the cylinder wall and piston, rendering the motor un-repairable. Our JHM HD Intake and Exhaust Valves are 21-4N stainless steel and single piece. Stock, the Exhaust Valves are two-piece. With a very small increase in stem diameter at the base of the valve, the strength of the valves is dramatically increased. Additionally, we had these valves tested on a cylinder head flow bench and the increased valve stem diameter resulted in a negligible amount of flow loss. In our testing, the resulting power numbers were the same as stock. Any negligible weight increase in the valves due to our improvements in the design, has been counteracted by increasing the dish in the head of the valve, making them still compatible with stock valve springs. Additionally, with our Fully Rebuilt Heads, the massive weight loss from the Titanium Retainers makes the resulting combination dramatically lighter than stock.

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Audi Valve Set, Intake & Exhaust, Heavy Duty, Coated, B6/B7 S4

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Audi Valve Set, Intake & Exhaust, Heavy Duty, Coated, B6/B7 S4

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Audi Valve Spring and Ti Retainer Set, Heavy Duty for B6-B7 S4

NOTE: This picture also shows our brand new Heavy Duty, High Rate, Performance Valve Spring and Ti Retainer Set which is included in our Rebuilt Cylinder Heads or available for sale separately.

Our JHM Heavy Duty, Coated Valve Set will include the following:
- 24x JHM HD Performance Intake Valves w/ Coating
- 16x JHM HD Performance Exhaust Valves w/ Coating

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This product fits the following vehicles:
Make Model Chassis Engine
Audi S4 B7 (2005.5-2009) 4.2l V8 40v
Audi S4 B6 (2003-2005) 4.2l V8 40v
Audi A6 C6 (2005.5-2011) 4.2l V8 40v
Audi allroad C5 (2001-2005) 4.2l V8 40v
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You're reviewing: Valve Set (JHM), Intake and Exhaust, Heavy Duty, Coated for B6-B7 S4, C6 A6 and C5 allroad w chain 4.2L 40v
Off-road Use

By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)

Vehicle Code § 27156:
(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system.

Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.

As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).

Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.

Prop 65

Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.

Learn More: www.p65warnings.ca.gov

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