So bought a z31 vg30et.been sitting,pulled apart by past owner 20 odd years ago.pulled engine,had been semi pulled apart.I have rebuilt engine,but when engine is on TDC number 1 cylinder.and match the disy chopper wheel to largest cut out slot,which matches notch in disy housing,rotor is pointing to number 3 on cap.(so next segment on cap past number 1 as rotor rotating)disy is mechanically sound.i would have thought with chopper wheel at largest slot and notch on disy housing this would be position to reinstall disy.i have traced segments on cap with ohm meter and are true to label.There was a cap supplied with parts pieces that came with car.have googled cap to match disy numbers and appears correct.i could install with rotor pointing at number 1 cylinder,but chopper wheels tdc hole would not line up with pick up.all I can think of is the cap is not correct,and segments are not correct.only other thing I could think of doing is getting an xtra long set if ht leads and bump them all 1 position.so number 1 lead now goes to the next marked tower(3),and see if it runs? Any body have any idea?cheers