REMARKS :
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- bearing diameters: 44.12 - 43.62 - 43.12 - 42.62 - 36.92mm (big bearings)
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Distance between valve and piston should be 1.0mm at least:
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check 5-15° after TDC on intake
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check 5-15° before TDC on exhaust
Machine pistons if required. Wrong installation can cause severe engine damage!
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ONLY for dirt track applications and pro street use with adjustable engine management or carburettors