IAG Stage 2 Pocket Ported Cylinder Heads For Subaru 06-14 WRX, 07-20 STI, 06-13 FXT, 07-09 LGT. Please make package selection from the below options and comment on which set you will need. 2006-14 WRX, 2006-13 FXT, 2007-09 LGT – D25 Stage 2 Heads (PN# IAG-ENG-3020D). 2007 STI V25 Stage 2 Heads (PN# IAG-ENG-3020V). 2018-19 STI Type RA N25 Stage 2 Heads (PN# IAG-ENG-3020N). 2008-20 STI W25 Stage 2 Heads (PN# IAG-ENG-3020W). The head package centers around our popular CNC pocket porting program which was developed over the last several years. Pocket porting removes excess OEM casting flash and the material underneath the valves. By smoothing and blending this area under the valve seat, significant flow capability can be achieved. The IAG Stage 2 pocket ported head package starts with brand new WRX STI head castings, directly from Subaru of America. The bare castings are visually inspected and then fixtured into our in-house Centroid 5-axis CNC Machine. This is one of the most advanced pieces of precision engine machining equipment in the world. The Centroid CNC ports the intake and exhaust runners under the valves and blends them to the valve seat. Once the Centroid completes the port process, the heads undergo a cam clearance machining process which removes material from the lifter area where larger lift and duration cam profiles are known to contact the castings. The heads are then fixtured in our Serdi 3.0 Valve Guide and Seat Machine to cut all intake and exhaust seats with a multi-angle valve job that suits the flow characteristics of GSC’s standard size valves. At this point, the heads’ decks are resurfaced using our TS-3000 BlockMate, which cuts the aluminum to a smooth, even finish. Next, the heads are ultrasonically cleaned to remove debris and oils from the machining process. Finally, the heads are reassembled using GSC Single Valve Springs and Titanium Retainers along with GSC Viton stem seals. Stage 2 Ported Head Package Includes. (x2) Brand New Subaru OEM Cylinder Head Castings. (x8) GSC 36mm (Standard) Intake Valves. (x8) GSC 32mm (Standard) Exhaust Valves. (x16) GSC Single Valve Springs & Titanium Retainers. (x16) OEM Valve Guides. (x16) GSC Valve Stem Seals. IAG Performance CNC Pocket Porting. Machined Cam Lobe Clearance. For use with stock cams or mild duration cams. Assembly and professional installation recommended. The item “IAG Stage 2 Pocket Ported Cylinder Heads For Subaru” is in sale since Thursday, February 11, 2021. This item is in the category “eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Other”. The seller is “heubergermotors” and is located in Westminster, Maryland. This item can be shipped worldwide.
- Manufacturer Part Number: IAG-ENG-3010
- Brand: IAG Performance