MSD 8740 Mustang COP Current Booster

[GlassTop09]

I believe this damage is due to using a MSD two step too launch. Probably less than 20 hard blast offs. Notice the key way in the reluctor is wallowed out. The damper was still tight. The broken tensioner dowel fell of in my hand when I was removing the cam drive components. It was a real bear getting the screw end of that dowel out. I have read this is why a billet gear on the crank and inside the oil pump is needed.

View attachment 81501

Glad you caught that in time! Didn't see this in your sig......were you running the OEM HB at the time?

 

[MrBhp]

Guess I better start doing some research.

 

[Midlife Crises]

OEM HB at the time

I was running an ATI damper and had no idea anything was wrong. The timing set, including the dowels were brand new Ford Racing with less than 1,500 miles on them. Now I have drilled and taped the block and installed larger 8mm tensioner dowels. I have a new MMR reluctor and will pay very close attention to the damper fit. New cams are going in and I don’t yet know if I will need adjustable gears for the crank. I hope not.