Timing chain question



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Thread: Timing chain question

  1. #1
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    Timing chain question

    What is the replacement interval for the timing chain on the 3.8? I don't even know if there is a recommended interval, I couldn't find anything in the manual.

    Anybody with the answer?

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  3. #2
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    Where do they come from?

    The timing chain on 3.8 and 3.3 will last over 200,000 miles.
    The timing belt on the 4 cylinder engine is supposed to be changed @100,000 miles, but they usually slip a notch at 60,000.

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    The 3.8 and 3.3 liter engines in the Caravans and Town and Countries are push rod and don't have an overhead cam and therefore don't have a timing chain. Or are we talking about something else?
    2006 Grand Caravan SXT, tow prep, side airbags, adjustable pedals, power rear liftgate

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    chain

    Quote Originally Posted by dm3
    The 3.8 and 3.3 liter engines in the Caravans and Town and Countries are push rod and don't have an overhead cam and therefore don't have a timing chain. Or are we talking about something else?
    HUh ???? Of course it has a timing chain .
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    what ever you say

    Last edited by Bernard Feltzer; 06-25-2008 at 11:55 PM.

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    Gotcha, thanks.

    I just purchased an Accord, and I know they need one at 100k.

    I figured that since the manual didn't say anything about replacing the chain, it prolly didn't need done.

    One less thing to fix!

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    Quote Originally Posted by st1100pilot
    I just purchased an Accord, and I know they need one at 100k.
    That's cuz it's a belt.
    Michael
    Centreville, VA
    Currently driving:
    2005 Dodge Grand Caravan SXT, 120K mi.
    Former owner of:
    1988 Dodge Caravan SE, 2.5L I4 (1988-1995, 99K mi); 1995 Plymouth Grand Voyager SE "Rallye", 3.3L (1995-2004, 169K mi); 2003 Grand Caravan Sport, 3.8L, (2004-2008, 106K mi), 2008 Nissan Quest, (2008-2010, 25K mi)

    Other vehicles:
    2008 Lexus RX400h (Dark Gray), 98K mi; 2005 Hyundai Elantra GT (Blue), 75K mi

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    Quote Originally Posted by vipergg
    HUh ???? Of course it has a timing chain .
    I always thought pushrod engines used gears or something to turn the cam, but if it has one, I guess it has one.
    2006 Grand Caravan SXT, tow prep, side airbags, adjustable pedals, power rear liftgate

  10. #9
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    <<I always thought pushrod engines used gears or something to turn the cam, but if it has one, I guess it has one.>>


    There are some more exotic racing engines that use gears instead of chains but almost all 'production' pushrod engines use a timing chain. Yes, the 3.3/3.8 has a timing chain. There are no maintenance intervals to follow on chains.
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    Yeah, there's only been one production engine that I know of that uses a gear drive and that's the Ford 300 straight six. At Advance, we sold one or two replacement sets each month for the older ones. Apparently, Ford used steel for the crankshaft gear, but nylon or some other composite for the camshaft gear, and the nylon would wear down after 100k or more miles.

    Of course, you can get aftermarket gear drives for a lot of V8 engines for that nice supercharger-like whine, but I don't know if they're casting them yet for our V6 engines.
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