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Zipper’s Stage 2 head upgrade begins with an inspection of the cylinder head as received; seats, guides and valves are all inspected for unusual wear or issues. After the inspection is completed, the valves and seats are professionally machined and blended to provide maximum flow in an un-ported head to achieve power and concentricity without the cost of ported heads. This process offers superior flow and sealing over the OE or a SE head. Heads are decked and fully assembled, ready for installation. Before decking approximate cc volume is 89-90 cc, which can be paired with multiple different compression pistons for various outputs.
Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.
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Zipper’s Stage 2 head upgrade begins with an inspection of the cylinder head as received; seats, guides and valves are all inspected for unusual wear or issues. After the inspection is completed, the valves and seats are professionally machined and blended to provide maximum flow in an un-ported head to achieve power and concentricity without the cost of ported heads. This process offers superior flow and sealing over the OE or a SE head. Heads are decked and fully assembled, ready for installation. Before decking approximate cc volume is 89-90 cc, which can be paired with multiple different compression pistons for various outputs.
Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.
Related Parts | 517-801, 517-802 |
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