3.5L Jet Hot Coated V6 Valve Covers
Note: This item fits all 05-06 LX vehicles or any Mopar 3.5L with metal valve covers.
As some of you may already be aware of, I have been in process of testing coated valve covers for the LX & LC Dodge Charger, Magnum, Challenger and Chrysler 300 with the 3.5L V6. The early year LX (05-06) came with metal valve covers from the factory. My intentions were to offer a visually appealing alternative while reducing heat by coating the valve covers with Jet Hot Sterling ceramic coating. According to all previous research the metal valve covers should have been interchangeable with the plastic ones that the 07-09 3.5L came equipped with. Unfortunately after closer investigation Chrysler switched to a different coil pack which uses only a single mounting screw as opposed to the 2 mounting points that the metal valve covers used. These later model coil packs also use a different wiring harness so its not quite a simple swap. It is possible to make it work but at this time we will not support this as a part that will fit the 07-09 year range.
The intake plenum sits less then 1/2" away from the valve cover on the passenger side and the IAT is positioned roughly 4-6" away from the valve cover on the driver's side depending on what CAI is installed and assuming the IAT has not been relocated. This results in one of the most performance reducing factors - heat. IN THEORY by reducing valve cover temperatures there will be less heat transfer to the plenum and a decrease in ambient engine bay temps specifically in the IAT area. For those who are unaware - the IAT is the sensor in the intake tube that reports intake temperatures to the PCM which in turn "adapts" various settings based on the observed temperature. In short, the hotter the recorded temperature the car's computer will adapt in an unfavorable manor and reduce performance. By reducing heat soak of the intake plenum and the IAT there is a potential for horsepower and torque gains and one less factor fighting against your engine.
Below you will find a data chart with temperatures I observed using the Diablo Predator and a Raytek MT6 Infrared thermometer over a period of 30min driving at an average of 30mph on surface streets including stop and go and idle time. The fans were left at their factory setting. I monitored data for ambient temp, coolant/engine temp, and air intake temp as well as surface temperatures for the valve covers and the intake plenum. The valve cover surface temp. averages were calculated by taking measurements in 5 min increments and averaging them. The peaks were measured after allowing the car to idle for 2 min (the typical time spent idling at a stop light). The averages for coolant temp and air charge were calculated using data observed by my "helper" monitoring low/mid/high numbers on the Predator - the peaks are the highest number recorded.
Pricing and Ordering
Full Retail will be in the range of $415 +shipping. This includes new spark plug tube gaskets, valve cover gaskets, & new hardware w/ rubber grommets. This means the part is 100% ready to be installed without the need to purchase any additional parts.
If enough people are interested I will start a group buy thread and if I can get 10+ people signed up and committed to buy I can drop the price close to $385 or maybe less depending how many we get. If this is the case I will require a deposit up front to pay for the purchase of the part and require the remaining balance when they are ready to ship. All parts would ship at the same time. Any opinions?