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post #1 of 20 Old 04-06-2016, 05:57 PM Thread Starter
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Plastic parts

Didn't know if anyone caught this vid, didn't see a post about it. Plastic parts drive me nuts. I know Kawasaki was trying to cheat in the cam department on some JD tractors with terrible results awhile back.
I know they're nearly everywhere today, but even the cam lobes now? Sad to see.
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post #2 of 20 Old 04-06-2016, 07:24 PM
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Plastic Parts Inside the Engine? There's No Excuse For That. Period.
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post #3 of 20 Old 04-06-2016, 08:37 PM
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Especially... the cam lobes...? No way.

My one B&S (5+? years on the mower) has been good but this vid has put me right off ever buying another.


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post #4 of 20 Old 04-06-2016, 10:00 PM
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Throwaway engines. They cost as much as ever and the quality has been cut by about 75%. Pathetic.
Seeing this makes me rethink my position on predator engines.

Joe

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post #5 of 20 Old 04-06-2016, 11:03 PM
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same thing with nylon. anyone ever worked on those ryobi 4 stroke trimmers? the cam lobes would wear smooth. also, its kind of sad to think that a chinese predator(at least the hemi version) is built better then most engines costing 4 times as much, excluding hondas
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post #6 of 20 Old 04-07-2016, 07:11 AM
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Back in another lifetime I seem to remember certain GM engines having plastic timing gears. There is nothing wrong with plastic itself. It is the improper use of the type of plastic. Those GM engines ran a long time on thos plastic gears before failing... Years of use. Now, if the proper plastic had been used in these BS engines they probably wouldn't have had a problem. BS has really shot themselves in the foot by doing this. It won't take long for word to get out and they will lose considerable business.
Thanks for posting, JT.

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post #7 of 20 Old 04-07-2016, 08:07 AM
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The problem is they don't do enough testing on those things before they kick them out the door to consumers. I don't have a problem with that kind of stuff when it's a viable solution. But when it's done for nothing more than cutting costs at my expense, then they will find out how quickly they can lose business. It's gotta be the worst strategy to let the bean counters decide how things get made...... and that's what has been going on in a lot of companies - not just small engines. People are crying about jobs leaving this country --- when they produce that kind of crap here. Made in the USA use to mean something. It's starting to slip - in a big way.




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post #8 of 20 Old 04-07-2016, 10:35 AM
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Quote:
Originally Posted by micah68kj View Post
Throwaway engines. They cost as much as ever and the quality has been cut by about 75%. Pathetic.
Seeing this makes me rethink my position on predator engines.
don't rethink your position on predator engines until you open one up but if all briggs engines have plastic gears and cams in them i'll pass on them. what we need to know is which engines have plastic parts inside
fords had plastic timing gears too, they would last 100,000 - 125,000 miles

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post #9 of 20 Old 04-07-2016, 01:34 PM
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Most of the "American" companies have made bushels of money over the last 100 yrs, and instead of trying to keep ahead of competing countries, and their companies. After pumping tons of pollution into the sky, and water, instead of cleaning up , and trying to improve their product, they close up, or outsourse, or cheapen their products. God Help Us.
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post #10 of 20 Old 04-07-2016, 03:56 PM
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I think the problem has more to do with the bent push rod than the plastic gear. How do you think the push rod got bent?

Seems unlikely that a plastic gear caused it. Perhaps the valve seized due to overheating (lean fuel/air mixture?) and bent the push rod that then stopped the plastic gear and stripped the teeth. Seems to me the plastic gear may have saved more damage to the engine.

Just interested in knowing why the failure occurred, rather than blaming all plastic parts as rubbish.

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