The first completed head will be in a contender car headed to the NASA champs. Our process: Ports developed using SuperFlow SF. As if you needed another reason to use a VVT head on your Miata hot rod. The rules are specific now, but this machine still produces a much better finished product and most importantly, each is identical. We have over 15 years of experience, invest in the latest technology and supply leading race engine builders. The early heads often have a 0.040-0.050' step where the port meets the valve seat that the factory doesnt bother to clean up. We can load unlimitted profiles, angles and contours into the machine with CAD and then cut it. The Spec Miata it goes in is now so fast that Chris and the car’s owner broke the gas pedal during testing. 5-Axis CNC Ported for 2.140' Intake and 1.810' Exhaust. We open up the Intake Port enough to still use the same Intake Manifold and gain overall performance without making the Casting thin. This Mazda Miata BP4W engine built by Chris Graham of Race Engineering made over 245 horsepower. In the As Cast form this 440 head has many CFM choke points.
We could do each hole in almost half the existing speed but we take material off in small amounts as the core shift varies so much in the miata heads we have to make small passes. A standard Miata engine normally aspirated makes about 100 to 115 hp. This used to require three different passes with three different tool. We are able to cut all the cuts now in one pass. This new machine uses a single point cutter and amazing precise and incredibly fast and accurate. This machine holds such tolerances and seals tighter than we have ever been able to achieve in the past, It cuts at 1200 rpm versus about 50-60 RPM of old stylee valve cutting machines. It is also completely automated so every head with be EXACTLY the same! After a few tweaks to the cad program the results on the dyno with the heads coming off the new machine are even better than what we had before! Things are looking even faster for 2017 PRC LS3 Aftermarket 6-Bolt 255cc CNC Cylinder Heads 2,549.99. PRC L99 CNC Head Porting & TSP Camshaft Package (Customer-Supplied Castings) 1,584.99. PRC CNC Porting Service - Customer Supplied 6.2L or 6.4L Apache/Hellcat Hemi Cylinder Heads 1,049.99. This machine insures the highest quality machine work possible held to the tightest tolerances. PRC CNC Porting Service - Cathedral Port Heads (Customer Supplied Castings) 799.99.
We upgraded the quality and performance of our Cylinder heads by moving to a new Newen CNC machine to do our Spec Miata heads moving forward. Figured I would share a video of a new toy This thing is awesome. a ported engine, or an A/C recharge ProMax Performance builds Performance Street, Race, and Marine engines utilizing modern CNC machining equipment.