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Unread 03-11-2013, 03:38 AM   #1
JeepNoob74
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2004 KJ Liberty 
 
Join Date: Mar 2013
Location: Mexico City, Mexico
Posts: 1
Changing the timing chain

Hello people! It is time for my 2004 Liberty to get the timing chain changed...

So I was wondering if you guys could recommend a particular timing chain kit brand?

I was looking it up in ebay and I found kits starting at 80$ !!
Then I found some other kits at $350

I was a bit confused as it seems kind of obvious there are differnet qualities out there, can you recommend an specific brand? Do they sell kits at the stealer... I mean dealer?

I dont really want to do this at the dealer as it will probably be about 700 dlls if I am lucky.

Are the 80 dollar kits so bad they wont hold for 60K-100K miles?

Is it recommended to change the water pump and oil pump at the same time ? Oddly enough I have seen some kits including the oil pump, some others both the water pump and oil pump and some others without any pump at all. On my smaller cars I usually change the water pump when changing the timing belt, but I am a Jeep noob!!

Also, since I guess I will have to purge the system of coolant, whats the recommended coolant for the Jeep Liberty??

Thanksss!!

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Unread 03-11-2013, 07:54 PM   #2
TwoBobsKJ
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2003 KJ Liberty 
 
Join Date: May 2011
Location: Northern, OH
Posts: 585
Well, assuming you have the 3.7L, you don't need to change the timing chain. It's a lifetime chain system.

There are actually three chains: The primary chain from the crank to the idler gear; and then one to each of the cams. I wouldn't want to try that job with the engine in the Jeep - it was enough of a challenge with the engine out when I did an engine swap recently.

Unless you have severe issues with the timing chains - don't do it.

As for the coolant...Use HOAT only. I buy mine at NAPA - Zerex G-05. Don't bother with the universal types - they don't cut it. Two gallons of coolant and two gallons of distilled water and you're good (system takes 14 quarts.)

If you change the thermostat remember: The thermostat cone goes INTO the block, not into the hose.

Bob
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2003 Renegade, Black
- 3.7L, 42RLE, 4.10's, 4X Guard Trans skid, Factory Engine, T-case, Tank skids, Modded BoulderBars sliders, OME 927/948, Bilsteins, JBA A-Arms & 1/4" top plate, 1 extra rear iso/side, Moabs with Firestone Destination AT's 255/70-16
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Unread 03-13-2013, 09:37 PM   #3
oldfamilyguy
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Join Date: Dec 2008
Location: oakville, canada
Posts: 814
Like he says, 3.7 timing chains have no replacement schedule. They should last the life of the engine. Even some rebuilds don't need them. Probably that set you see for $350. 4 cyl. gas or deisel, different story. Timing belts and follow the schedule. If in doubt change it, if it breaks you have a big problem. $80 seems to be in the ballpark but I don't know for sure, never had or worked on either.
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Unread 03-16-2013, 09:38 AM   #4
oldfamilyguy
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de nada
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Unread 03-16-2013, 03:24 PM   #5
Skipper6413
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2011 KK Liberty 
 
Join Date: Jul 2011
Location: Texarkana, Texas
Posts: 337
Good to know! Wife's KJ recently purchased with 75k and I was concerned about that!
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Unread 03-16-2013, 03:50 PM   #6
oldfamilyguy
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The greatest concern with the 3.7 is overheating will kill it. So along with the usual maintenance be certain that the cooling system is 100%.
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Unread 03-16-2013, 04:53 PM   #7
Skipper6413
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2011 KK Liberty 
 
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Location: Texarkana, Texas
Posts: 337
Roger! That service will be next on the checklist! A LOT easier than timing chains!
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Unread 03-22-2013, 09:39 PM   #8
streetglideok
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2005 KJ Liberty 
 
Join Date: Jul 2011
Location: Colorado Springs, Colorado
Posts: 2,415
Quote:
Originally Posted by JeepNoob74 View Post
Hello people! It is time for my 2004 Liberty to get the timing chain changed...

So I was wondering if you guys could recommend a particular timing chain kit brand?

I was looking it up in ebay and I found kits starting at 80$ !!
Then I found some other kits at $350

I was a bit confused as it seems kind of obvious there are differnet qualities out there, can you recommend an specific brand? Do they sell kits at the stealer... I mean dealer?

I dont really want to do this at the dealer as it will probably be about 700 dlls if I am lucky.

Are the 80 dollar kits so bad they wont hold for 60K-100K miles?

Is it recommended to change the water pump and oil pump at the same time ? Oddly enough I have seen some kits including the oil pump, some others both the water pump and oil pump and some others without any pump at all. On my smaller cars I usually change the water pump when changing the timing belt, but I am a Jeep noob!!

Also, since I guess I will have to purge the system of coolant, whats the recommended coolant for the Jeep Liberty??

Thanksss!!
As has been said, there is no set schedule for timing chain replacement. Now if you have the 2.4L 4banger, that is belt driven, not chain driven. There are 3 chains on the V6 engine. If there is alot of racket coming from the chains, typically due to neglect of the engine, then you would need to change all 3 chains, the chain guides, and the hydraulic tensioners, plus gaskets. You would need to know how to line up the timing components exactly, or you will have some serious issues on your hands. I've all but given up buying junk on fleabay personally. $80 for a timing kit, you aren't getting much in parts, or quality. It's one thing to go cheap on something you can reach easily, but its another when you are dealing with major engine work, and the potential for major engine damage should an inferior part fails. Those kind of parts, Im usually going to source them from the dealer. I don't have much faith in parts stores junk either.

As for coolant, you need an HOAT coolant. It can come in the pinkish color like chrysler's, or gold color like ford. It is NOT the same as dexcool, or conventional green. There is no such thing as a coolant that works in all of them and performs to the design specs of the coolant meant for the engine. There are claims of it, but doesn't mean it works. Its out there to drum up business from shops that are too cheap to do it right.
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Unread 03-23-2013, 10:07 AM   #9
oldfamilyguy
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Location: oakville, canada
Posts: 814
I don't think the op really cares. He disappeared after his original and only post.
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