FYI, I posted this on another thread referencing this cam, but thought it would be good over here too.
I just had a chat with Ken. He said that the cam is identical to the -75 megacycle but has 3* more duration on intake AND exhaust.... A changed that slight can be deleted by running the tappets a little looser. His explanation was that it was an extra 1.5* on either end of the lobe, which would put the intake on the CX-7 opening at 27.5* BTC and closing at 57.5* ABC. Exhaust would be open at 54.5* BBC and closed at 25.5 ATC. Lobe centers 105 int and 104.5 exh. Overlap, closed dur., etc can be tinkered with a bit with the tappets. the CX-7 is basically identical to the 125-75.
Cam Specs Valve Lift Duration @.04 Int. Open Int. Close Exh. Open Exh. Close Lobe Center Overlap tappet Clearance
Int. Exh. Int. Exh. BTC ABC BBC ATC Int. Exh. Calc. Int. Exh.
Megacycle 125-75 0.400 0.375 262 257 26 56 53 24 105 104.5 50 0.005 0.005
CycleX CX-7 0.400 0.375 265 260 27.5 57.5 54.5 25.5 105 104.5 53 0.004 0.004
