Ive posted this before!Now its time to fix it.
I have a mid to late 70s 140 merc inboard,stern drive 3 ltr engine.Ive rebuilt it,you name it its been done.The second last time it failed,the composite fibre cam gear teeth were worn.Only one thrd of them.
2 months ago the engine did the same thing.Mind you I havent taken anything out except for the ditributor cap.Rotor wasnt turning while cranking the engine over.Thats a given the cams not rolling.WHY?Cause im sure for a fact that the composite gear that a merc dealer sold me failed!AGAIN!But it did last much longer this time!
SO! My question is!
Do I take a chance again with this plastic type gear(which is bunk) in my own opinion!)
OR, Do I pick up a metal gear to attach to the cam shaft?
Keep in mind,Ive rebuilt quit a few engines and never had an issue,!Total rebuilds!
Some of the work on this particular engine has been done professionally!
Ive done all the rest!
Thanks in advance
Ps it is a melling cam gear that I purchased both times,composite fibre gear.Purchased at a mercruser dealer in oakville/mississauga area near the ford plant.