timing gears on 300
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Cross-Country
Joined: Mar 2005
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timing gears on 300
Helped a friend of mine on his truck. It is an 89 F150 4x4 with 215-220,000 mi. It quit running and when he got the timing cover off it had a steel crank gear and plastic cam gear. Is this correct? I thought both gears were supposed to be both the same.
Cargo Master
Joined: Jan 2004
Posts: 3,118
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From: South Dakota
I'm pretty sure that's the way they were supposed to be. The metal gear running against the nylon gear would cut down on noise, or that was the idea anyway. Was the nylon gear still in good shape? What are you planning on doing to the engine? Anything besides just getting it running again?
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Cross-Country
Joined: Mar 2005
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The teeth looked good, except just one spot where it broke off, and all the teeth wore off from him trying to restart it. He was mudding with and spun it to 6000RPM, when it quit. He is just going to get it running, he has another engine around he will likely get the parts from, they are both steel, does he need to change both so they are a matched set?
Post Fiend
Joined: May 2004
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From: Lakewood, Ohio
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Posting Guru
Joined: May 2007
Posts: 1,208
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From: North Reading Mass
Yes he has to change both gears, they should be a matched set. It would also be a good time to replace the water pump too.
If in fact he did rev the engine to 6000 Rpm there could be some damage to the valve train or the rotating assembly. I've never had mine much above 3600.
regards
rikard
If in fact he did rev the engine to 6000 Rpm there could be some damage to the valve train or the rotating assembly. I've never had mine much above 3600.
regards
rikard
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Cross-Country
Joined: Mar 2005
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I know thats way to high for a 300, but thats where he said it was. But he also is on his 10th or 12th vehicle in 6 yrs. of driving. We are going at it again tomorrow nite so we will see if anything else is wrong.
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