A 5-Angle Radius Valve Job is required for porting. Race Tech porting is tested and developed using a combination of flow bench and dyno data. Race Tech's head porting provides an increase in flow and velocity to gain both powerband and peak horsepower. On certain models brand new stock guides are replaced if there is a known reliability issue.Įngine modification is for RACING ONLY! Not for highway (DOT) use. These two steps create valve to seat concentricity better than. When guides are replaced, a valve job must be performed to ensure proper valve alignment. New valve guides are installed and precision honed to the correct tolerance. Sometimes seats are replaced for better flow caracteristics and power. If the stock seats are poor they are replaced for reliability. Sometimes even brand new stock seats need to be replaced. Race Tech can precisely remove and replace valve seats. RELIABILITY - The Top Tuners in the world all know a 5-Angle Radius Valve Job has superior flow while providing the same reliability as a 3-Angle Valve Job (the seat width is exactly the same.) This increases air speed and flow over a 3-Angle Valve Job. A 5-Angle Radius Valve Job creates the best flow possible by adding additonal angles and a radius. The area around the valve seat is the most critical area of a port. Hi-Performance 5-Angle Radius Valve JobĪ RT Hi-Performance 5-Angle Radius Valve Job adds horsepower without sacrificing reliability. We include a spec sheet with every valve job.Ī Standard 3-Angle Valve Job maintains factory designed flow and horsepower. This alignment accuracy reduces valve bounce and reaps huge benefits in longevity of valves, seats, and guides. 001" and a vacuum test of better than 1%. RT Valve Jobs have guaranteed concentricity of less than. Race Tech uses a Rottler SG7 to provide a dependable, accurate, highest quality valve job.Ĭoncentricity - It is common for stock heads to have. With years of using nearly every valve cutting tool available, Race Tech selected the Rottler SG7 as the best machine for high quality, precision valve jobs.Ī precision Valve Job is the core of a high-output, reliable motor. Head porting is for RACING ONLY! Not for highway (DOT) use. You can take advantage of precise, repeatable, CNC porting without worry. We keep your port designs completely private and provide a Non-Disclosure Agreement. Tuners can have their head designs digitized and ported on the RT Rottler CNC. Race Tech has a Rottler EM69P 5-Axis CNC Porting machine to provide the most accurate, consistent, precision porting available.ĪTTENTION TUNERS - Confidential Port Digitizing Available To view the Race Tech Power Plan do a Product Search and scroll all the way to the Engine Section at the bottom.Įngine modifications are for RACING ONLY! Not for highway (DOT) use. If something is not included in the RT Power Plan we are recommending stock. RT ECU Mapping (for Race Gas and Pump Gas)Īlso listed are specific concerns for that particular model. Valve Guides (if there is an issue with stock) Valve Seats (often for performance, sometimes for reliability) The RT Power Plan includes recommendations for:įull Porting (with possible addition of Epoxy) If you follow the RT Power Plan™ and assemble the engine correctly you can build an engine capable of competing with anything in the world. Race Tech has spent an impressive number of hours doing R&D on the Flow Bench, Dyno, Rottler EM69P CNC, and at the Track. head, cylinder, crank).ĮNGINE SERVICES PRICING see PRODUCT SEARCHĭeveloping the best combination of porting, cam timing, mapping, and related components to build "World Class" engines is a painstaking process. W e provide precision services for ALL engine builders and tuners. The staff at Race Tech has over 65 years of championship-winning engine building and tuning experience formally educated by the world's most renowned engineers. Race Tech provides quality, precision engine services using the best equipment and processes in the industry. "The best you've ridden is the best you know." - Paul Thedeīuilding a reliable, "World Class" engine requires a combination of state-of-the-art equipment and experienced, knowledgable technicians.
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