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HybridZ

Info wanted on porting my P90 head


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New to this forummming bizzo. Been browsing this site, found some great info on porting concentrating more on the valve seat grinding etc, does anyone know where there is some good info on the actual shaping of the port, removal of the valve guide 'boss' etc?????, reshaping of the exhaust port for max velocity and flow........cheers

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New to this forummming bizzo. Been browsing this site, found some great info on porting concentrating more on the valve seat grinding etc, does anyone know where there is some good info on the actual shaping of the port, removal of the valve guide 'boss' etc?????, reshaping of the exhaust port for max velocity and flow........cheers

Sounds mostly like proprietary info to me. What has been revealed by the guru's should be easily searchable. Look up 1 fast z and BRAAP for some of the most active head guys on here.

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