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Is 2000 Town and Country 3.8L an "Interference" engine?


frugalbrutus
02-19-2006, 03:00 PM
I have ALLDATA and the owners manual, and several hours of google, and none give me a definitive answer as to whether my engine is freewheeling or interference.
Does anyone know FOR SURE?

(why is something so important so difficult to find??)
thanks

TurboDuck
02-20-2006, 08:34 AM
As far as I know it's a "freewheeling" engine.

The 3.3 and the 3.8 share the block, and a lot of other components.

frugalbrutus
02-23-2006, 10:13 PM
thanks for the comment.

I had some work done on the van, and the shop wanted to also replace the timing chain and oil pump, because it is "due". They didn't say so, but wanted me to think it was an interference engine and to scare me into doing the work. But since it appears to be a freewheeling, I'm willing to take the risk of getting stranded if it does break. I don't see ANY recommendation on this engine to get it replaced as part of normal maintenance... right?
I have about 120K miles on it.

vipergg
02-24-2006, 07:23 AM
If the oil has been changed regularly you should be able to get a lot more than 120K on a chain , maybe about 200K I would start thinking about it if you still have the van . sounds like they were trying to screw you just to get some extra income , I wouldn't go back there .

HeadlessHorseman
02-24-2006, 08:12 AM
For what it's worth, I have never replaced my oil pump or timing chain on my '96 GC LE (also a 3.8L)... and this vehicle just rolled over 226,000 miles. I gotta agree with vipergg, sounds like they're trying to scare you into "fixes" you may not need.

Unlike some of Chrysler's smaller motors, the 3.8L motor uses an honest-to-God metal timing chain (with real old-school links) and NOT these new-fangled, slotted rubber bands to maintain orientaion between crankshaft and camshaft(s).

Totally off topic, it KILLs me to think some parent may have spent a fortune to send their kid to engineering school to cook up this less-than-brilliant flash of rubber band engineering. There. I feel better. :)

frugalbrutus
02-24-2006, 11:59 AM
Totally off topic, it KILLs me to think some parent may have spent a fortune to send their kid to engineering school to cook up this less-than-brilliant flash of rubber band engineering. There. I feel better. :)

Thank you all for your opinions. I will wait and see. We are definitely "kind and gentle" to our van, so I'm looking for that 200K miles...

I bet the rubber bands weren't an engineering choice, but some Business Graduate who saw they could shave $5 off the purchase price of the vehicle.
Woo Hoo, $5!
And engineers aren't generally trained to "talk back" or argue with the business folks, only to present the data.

HeadlessHorseman
02-25-2006, 08:27 AM
... And engineers aren't generally trained to "talk back" or argue with the business folks, only to present the data.You're right, of course, but it still bugs me that product quality sometimes seems to move in the wrong direction.

B33p3r
02-26-2006, 08:54 PM
I was always told there is no such thing as a stupid question? but this may be one. What is freewheel and Interference? Sorry. I'm more into the electrical aspect of vehicles but honestly never heard these terms.

RIP
02-26-2006, 09:33 PM
This is far from a stupid question. Knowing the difference could save you big bucks and keep you from getting stranded somewhere.

The term "interference engine" in simplest terms means if your timing belt breaks the exhaust and intake valves in the cylinder head will come in contact with the top of the piston. This will bend or break the valves, destroy the valve seats, and damage the piston and cylinder walls. "Freewheeling" also termed "non-interference" just means if the timing belt breaks, nothing should be damaged. If you want to know what type your engine is (if it has a timing belt and not a chain) then go to this link and find your engine. If there is an asterix next to it, it is an "interference" engine. Read the fine print at the bottom of the chart. Change your timing belt every 80K miles and you shouldn't have anything to worry about. http://www.gates.com/downloads/download_common.cfm?file=TBR05.pdf&folder=brochure

B33p3r
02-28-2006, 08:21 AM
Thank You, I appreciate the info. 2001 GC. Looks like we're freewheeling.
Thanks again.

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