Boport Performance - Stage 3 Ported Cast Iron Head- Bare (Powered by CubeCart)

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Location: /Cylinder Heads

Stage 3 Ported Cast Iron Head- Bare

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This head begins as a thoroughly cleaned and magnaflux inspected 100% crack-free core. Valve guides are re-sized or replaced and sized to our specific tolerances. We then install our special extreme temperature hardened exhaust seats, and begin machine work. We machine the valve seats for oversized 1.89" intake and 1.59" exhaust valves on a Sunnen VGS-20 seat cutting machine using flow bench and dyno developed custom profiles. After this we begin the porting phase, porting to our full stage 3 level. Every head is flow tested and verified to flow a minimum of 220cfm intake and 185cfm exhaust flow. After flow testing, the head goes back into a final machining phase where we re-touch the valve seats one last time with cutters (to remove any unwanted nicking from the porting) and then the head is set up in the surfacing machine. Combustion chambers are cc'd at this point and we mill accordingly to reach our target volume of 60cc's for a turbo application or less for naturally aspirated aplications . We clean these heads first in a hot chemical soap bath and then finally with a solvent based bath. After final cleaning we install new cam bearings, freeze plugs and oil plugs making this fully ported and machined head ready for assembly of your high performance parts- right out of the box.

Solid lifter conversions and other machining available, please inquire!

Price: $1395.00

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Product Code: bh001

In Stock: 16

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