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To: ManyMoose who wrote (358747)	4/10/2010 12:33:58 AM
From: goldworldnet	Read Replies (1) \| Respond to of 793962

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To: ManyMoose who wrote (358747)	4/10/2010 12:47:34 AM
From: miraje	1 Recommendation Respond to of 793962

the diagnosis was a timing chain breach. Possible outcomes would have been complete reworking of all the valves and cylinders This certainly isn't a car thread, but it is the weekend and I'll throw in my 2 cents worth in regards to your post. Most, although not all, modern engines are of overhead cam design. 30 to 40 years ago they were quite rare. OHC engines require a chain or belt to drive the camshaft(s) which actuate the valves. An overhead cam engine can be of either an interference or non interference design. If the chain or belt breaks on a non interference engine, it will just stop. No resulting damage to the engine and a new belt or chain will get it running again. Your Chrysler engine was most probably of this type. On an interference type OHC engine, a broken timing belt or chain will result in pistons coming into contact with valves, and you're then more than likely looking at some very expensive internal engine damage. If the manufacturer recommends a belt or chain replacement at specified intervals, usually around every 60,000 miles or so, that's one maintenance item that's penny wise to adhere to, especially with an interference type engine..