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  #16  
Old 03-23-2005, 09:46 AM
Hatterasguy's Avatar
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Join Date: Nov 2002
Location: Milford, CT
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I find if you open that little book in the glove box, then look for timing belt replacement that helps.

Most cars are 60k miles but newer ones are now close to 100k.

If people would just not be so cheap and follow the maintaince schedual then belts would almost never break.

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  #17  
Old 03-23-2005, 09:51 AM
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Join Date: Dec 2004
Location: Somerset, UK
Posts: 50
wes bender wrote......

"If you want to get picky, when a timing chain (or belt, for that matter) fails in an interference engine, the valves do NOT travel down at a high rate of speed and contact the pistons which are travelling upward. The valves become stationary, some in the open position, and the pistons contact them on their upward stroke".
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My response is........

wes bender (or larry?),
Just suppose a belt/chain fails while the engine is turning at 5,000 revs....are you suggesting that the camshaft just instantly stops dead?....In fact, there will be a certain amount of momentum (or energy) whereby the camshaft will still be operating the valves during the milliseconds it take for valves and piston to meet...therefore i maintain that at least one of the multi valves would be travelling down as a piston comes up to meet it.




ps....maybe a less aggressive attitude would be in order!

Last edited by john; 04-01-2005 at 05:52 AM.
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  #18  
Old 03-23-2005, 10:48 AM
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Join Date: Mar 2002
Location: Lexington, Kentucky
Posts: 132
When the timing chain broke on my 380SL it sounded like the engine was coming apart and it stopped with a thud ! The damage was extreme enough to necessitate a $6,900 repair bill involving valves and pistons.
I now promise that I'll change the change at 95,000 intervals (it broke right at 100K on cue as it were!).

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