My 89 3.9 had 256,000 miles on it on the orignal timing chain when I sold the
truck. My philosophy has always been if it ain't broke don't fix it. Since
there is no maintainence interval for the chain I wouldn't bother unless there
is another reason to tear into the fron of the engine. I wouldn't expect
anything to be worn out in an engine with only 100,000 miles on it unless it
was abused.
Don't recall what the acceptable range would be for the 3.9/5.2/5.9 but in most
FSM's there is a procedure for checking for excessive stretch. You remove the
distributor cap and rotate the engine forward until the rotor moves. Then turn
the engine backwards until the rotor moves. The amount you turn the engine
backwards before the rotor moves is the slack in the chain and there is usually
a max amount allowed.
Dave Clement
99 SLT+ CC 4x4
In article <BAY19-F12FE0F9EFE2C8EE9A2D8D6C3610@phx.gbl>,
scsilverdakdml@hotmail.com ("Ronald Taylor") writes:
>
>
> YEP!......I agree with Billy on this one!
>
> The stock timing sets on these engines are Junk!.......A good Double Roller
> is a good idea!
>
> Ron
> 01' Dakota Sport RC 3.9...
> http://www.dodgetruckworld.tenmagazines.com/mygallery.asp?id=8143
> http://www.dragtruck.com/ENTRIES/RUSCAS2XUMHU.html
>
>
> From: B1LLYW@aol.com
> Reply-To: dakota-truck@dakota-truck.net
> To: aol@dakota-truck.net
> Subject: Re: DML: 100k = timing chain?
> Date: Mon, 21 Feb 2005 05:58:42 EST
>
> In a message dated 2/21/2005 1:32:18 AM Eastern Standard Time,
> barrysuperhawk@insightbb.com writes:
>
>
> > I just hit 100K myself, hadn't thought about a timing chain.. is 100k
> > the service interval on the 5.2? What else should I be worrying about?
> >
>
> I usually don't yell but ABSOLUTELY do a timing chain. Stock chains are
> really pretty wimpy. I tell people that if you're changing a water pump
> etc., any
> reason to open up the front of the motor, change the chain when you're in
> there even with low mileage. When you pull the stocker off and compare it
> to a
> decent double roller, you'll understand why.
>
> Bill White - KRC Performance
>
> http://www.bionicdodge.com
>
> '03 Dakota R/T, CC, Black, K&N, F&B, Superchips
> '04 Liberty, 4x4, 3.7, 5 speed, 3.73 LSD, Sirius
>
>
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