Rod Bender

A new steel timing set(chain and sprockets) was installed about 25,000 miles ago on my 86 Thunderbird 3.8. The engine was babied ever since, but still the cam gear was found to have broken teeth, although the chain looked ok as did the crank gear. The gear and chain did not appeared to suffer from lack of oil. I am not sure who manufactured the parts and would like to hear some ideas as to what caused this to occur.

390wagon

if there isnt a lot of wear on the teeth or chain i would have to say quality of the parts is to blame, i only use cloyes or comp cams chain sets. the timing chain sees a lot of abuse with the natural vibration of the engine and having to pull along the weight of the valve train against valvespring resistance.

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68 Ford Country Sedan Wagon-390 FE, C6, 9 Inch
87 Chevy Caprice Classic Wagon-307, 2004R, 10 Bolt, what can i say, i grew up with that car

Rod Bender

Thanks for the reply, 390. Good advice. I bought the set at an independant parts store (not like Auto Zone or Pep Boys) and thought I was getting better parts.