Mustang v6 cam gear snapped

Asked by Jan 01, 2017 at 10:58 PM about the 2001 Ford Mustang Convertible

Question type: Maintenance & Repair

I have an 01 mustang 3.8l, just did a complete
rebuild bored 30 over, 4.2l crank and piston heads,
compcams cam. I tried to start the car for the first
time and it started and died once I let out of the
gas. I then pull the timing cover off to find that the
new camshaft gear was shattered into about 8
pieces, what would cause this?

3 Answers

107,765

Over torqued cam retainer bolt, previously fractured cam gear, camshaft seized in the block, severely worn tappet bore causing the roller tappet to drop behind the lobe of the camshaft but this is very rare. That's about all I can think of right now, but that's enough.

78,055

Wow, never seen that!

Best Answer Mark helpful
58,385

Valve to piston interference? Did you check the piston to valve clearance?

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