Engine timing belt question - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-15-2011, 03:59 AM   #1
Newb
 
Madjo's Avatar
 
Join Date: Nov 2011
Posts: 11
Engine timing belt question

Hi I have a Jeep Wrangler Sport 2007 2.8 diesel turbo CRD. It has just done 100,000 km (62500 miles) and I have some conflicting advice that I hope someone can clarify for me. I have two service schedules (in the manual and from the Jeep agent) which both say the engine timing belt and timing belt tensioner is to be replaced for the first time at 200,000km (125,000 miles). My local mechanic checked this with the NZ Jeep agent who told him it was due now and also that he would not be able to do it as he needs a special tool that only they have. It is schedule B. Can someone please confirm - 200,000 seems to be quite a long time for the first drive belt change. Thanks

Madjo is offline   Quote Quick Reply
Old 11-15-2011, 07:32 AM   #2
Jeeper
 
Join Date: Aug 2011
Location: Ohio
Posts: 1,251
Here's a decent video and explanation:


Here's the authors text:
This jeep was the victim of a slipped timing belt, at 116k mikes it was only 16k past the timing belt change interval. When the belt slips or breaks it damages the rockers. The rockers are designed to fail should the piston impact the valves. The rollers in the rockers break down and the roller collapses into the rocker. New rockers run from $47-55 each, so if a timing belt slips or breaks it will cost an additional $800 in parts alone, not to mention additional labor costs to remove the intake/cams to replace the rockers. What could have been a simple timing belt replacement turned it an expensive and labor intensive repair. Timing belt change intervals should be observed religiously <end>

I might add:
While they are in there and it's apart, you may have them do the water pump as well.

__________________
'14 Anvil JKUR (sold the '12 at 52K miles)
'13 unlimited stripped sport (red one)
'13 JKU sport (blue one)
'10 Unlimited sport (other red one)
'08 Unlimited X (green one)
3JKs1H1 is offline   Quote Quick Reply
Old 11-15-2011, 08:31 AM   #3
Jeeper
 
Join Date: Jul 2011
Location: Broken Arrow, OK
Posts: 2,305
^^^^^What he said. Timing belts are cheap compared to the stuff that is broken when the belt fails. 200,000km isn't that far on a timing belt. Most are somewhere between 50,000 and 150,000 miles, so that lands right in the middle. Some are very forgiving of going over, others aren't. We had a Chevy Aveo (really a Daewoo) come into the shop on a hook at something like 60,050 miles. Timing belt was broken and the engine destroyed. The interval was 60,000 miles. My dad used to have a Ford Courier with a 2.3L and it ran forever without a timing belt service, I suspect well over 200,000 miles.

+1 on the water pump while you're in there as well and don't go cheap on the belt and component kit. It will come back to haunt you if you do.
__________________
2012 Silver Sport S, Silver, 6 speed, soft top, 3.73s, LSD, PCG, Infiniti, deep tint windows, Pro Comp 1028 wheels, 33" Duratracs, Smittybilt bumpers and steps, KC fog lights, Mopar slush mats and fuel door.

Happiness is a belt fed weapon.
oilwell1415 is offline   Quote Quick Reply
Old 11-15-2011, 08:36 AM   #4
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,205
Is it an "interference" engine? If so, it is very important to be on the safe side and change it out as Oilwell suggests.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is online now   Quote Quick Reply
Old 11-15-2011, 08:45 AM   #5
Jeeper
 
Ageless Stranger's Avatar
 
Join Date: Apr 2010
Posts: 26,792
Quote:
Originally Posted by daggo66
Is it an "interference" engine? If so, it is very important to be on the safe side and change it out as Oilwell suggests.
X2. Interference engines make a big mess of themselves when the timing belt goes T/U.
Ageless Stranger is offline   Quote Quick Reply
Old 11-15-2011, 08:53 AM   #6
Jeeper
 
Join Date: Jul 2011
Location: Broken Arrow, OK
Posts: 2,305
There's no such thing as a non-interference engine. Treating them as if they are leads to empty pockets. There are way too many out there that claim to be non-interference that eat themselves to take chances. The GM 2.2 4 cyclinder comes to mind. It's a chain engine, but the chain is junk and needs serviced like a belt. I have never seen one that jumped time without bending valves. They finally put a warning in the service manual about it even though they still said it was non-interference. Any engine can have issues when the belt snaps, all it takes is the right circumstances. I've even seen DOHC engines that have the intake and exhaust valves hit each other when the belt goes in a non-interference engine. They may not have hit the piston, but the valves were still trash.
__________________
2012 Silver Sport S, Silver, 6 speed, soft top, 3.73s, LSD, PCG, Infiniti, deep tint windows, Pro Comp 1028 wheels, 33" Duratracs, Smittybilt bumpers and steps, KC fog lights, Mopar slush mats and fuel door.

Happiness is a belt fed weapon.
oilwell1415 is offline   Quote Quick Reply
Old 11-15-2011, 10:42 AM   #7
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,205
Well that sucks. My daughter just bought a Cobalt with the 2.2. I had a Chrysler 2.5 and the timing belt broke. No issues whatsoever.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is online now   Quote Quick Reply
Old 11-15-2011, 10:56 AM   #8
Jeeper
 
Join Date: Jul 2011
Location: Broken Arrow, OK
Posts: 2,305
Quote:
Originally Posted by daggo66 View Post
Well that sucks. My daughter just bought a Cobalt with the 2.2. I had a Chrysler 2.5 and the timing belt broke. No issues whatsoever.
I think the one in the Cobalt is OK....for now. Does it have the cartridge oil filter on the top front of the engine on the driver's side? If so it is a different 2.2. Those haven't been out long enough to know if they suck or not. The one with definite problems was used in the Cavalier, S-10 etc. from the dawn of time until about 2004 or 2005.

It's a crap shoot when the belt breaks. Some are OK, others are not. Better to not take chances. Even if it doesn't bend valves Murphy says that it isn't going to break in the parking lot of your favorite shop. It's going to break 10 miles from the nearest telephone poll in an area well known for the toothless hillbilly ass rapists that live there.
__________________
2012 Silver Sport S, Silver, 6 speed, soft top, 3.73s, LSD, PCG, Infiniti, deep tint windows, Pro Comp 1028 wheels, 33" Duratracs, Smittybilt bumpers and steps, KC fog lights, Mopar slush mats and fuel door.

Happiness is a belt fed weapon.
oilwell1415 is offline   Quote Quick Reply
Old 11-16-2011, 12:44 AM   #9
Newb
 
Madjo's Avatar
 
Join Date: Nov 2011
Posts: 11
Hi Guys,
Thanks for the replies. I was already sufficiently scared of it breaking which is why I asked the question but the thought of the toothless hillbillies ... (yep we have them in NZ too) really makes me swing toward doing it now!

Bottom line is that going to the Jeep agent here has always cost me over $1000 for just a normal service so I hate to think what the belt service would cost. As soon as it ran out of warranty, I moved back to my trusted local guy. But I still get stung for parts as they come from the jeep agent. They have a monopoly in NZ so while I love my Jeep, the cost of service and the attitude of the dealership would make me have second thoughts about another one!

Am thinking maybe the answer is to start buying the parts for services direct from the States. Can someone please tell me what the tool is that the agent told my mechanic would prevent him from doing the job?

Cheers
Jo
Madjo is offline   Quote Quick Reply
Old 11-16-2011, 08:28 AM   #10
Jeeper
 
Raziel's Avatar
 
Join Date: Aug 2011
Posts: 751
Some vehicle recommends doing the belt at 60k, other at 80-120k. Or you can fall on the default setting & do it at 90k. Ether way, don't skip out on doing a timing belt. A small investment goes a LONG way then what you would be spending if it breaks.

I do recommend having the water pump, cam & crank seals, tensioner & rollers replace as well since he will be right there to do them all. Shouldn't be any addition charges for them in labor than the labor to replace a water pump. They may add an hour extra just to do it for at least the seals.
__________________
2011 Jeep Wrangler Unlimited, M/T


Home, Home Is Where The Heart Is. That Is What They Say. It's Sorrow Is As Sweet To Me As Red Wine...
Raziel is offline   Quote Quick Reply
Old 11-16-2011, 09:53 AM   #11
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,205
Quote:
Originally Posted by oilwell1415

I think the one in the Cobalt is OK....for now. Does it have the cartridge oil filter on the top front of the engine on the driver's side? If so it is a different 2.2. Those haven't been out long enough to know if they suck or not. The one with definite problems was used in the Cavalier, S-10 etc. from the dawn of time until about 2004 or 2005.

It's a crap shoot when the belt breaks. Some are OK, others are not. Better to not take chances. Even if it doesn't bend valves Murphy says that it isn't going to break in the parking lot of your favorite shop. It's going to break 10 miles from the nearest telephone poll in an area well known for the toothless hillbilly ass rapists that live there.
It's an 09. I haven't looked for the filter yet. Th engine is covered with a darth vader helmet.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is online now   Quote Quick Reply
Old 11-16-2011, 09:57 AM   #12
Jeeper
 
Join Date: Jul 2011
Location: Broken Arrow, OK
Posts: 2,305
If it's an 09 it won't have timing chain problems like the earlier models did. It still may have problems, but not that one.
__________________
2012 Silver Sport S, Silver, 6 speed, soft top, 3.73s, LSD, PCG, Infiniti, deep tint windows, Pro Comp 1028 wheels, 33" Duratracs, Smittybilt bumpers and steps, KC fog lights, Mopar slush mats and fuel door.

Happiness is a belt fed weapon.
oilwell1415 is offline   Quote Quick Reply
Old 11-16-2011, 01:41 PM   #13
Jeeper
 
Thracks's Avatar
 
Join Date: Dec 2010
Location: Pismo Beach
Posts: 509
__________________
lol land rover
Thracks is offline   Quote Quick Reply
Old 11-16-2011, 06:35 PM   #14
Jeeper
 
Raziel's Avatar
 
Join Date: Aug 2011
Posts: 751
THAT IS FRAKKING AWESOME!!!! I may try that if one comes my way...

Quote:
Originally Posted by Thracks View Post
__________________
2011 Jeep Wrangler Unlimited, M/T


Home, Home Is Where The Heart Is. That Is What They Say. It's Sorrow Is As Sweet To Me As Red Wine...
Raziel is offline   Quote Quick Reply
Old 11-16-2011, 07:00 PM   #15
Jeeper
 
DrHolliday's Avatar
 
Join Date: Jun 2011
Posts: 511
Quote:
Originally Posted by Madjo
Hi Guys,
Thanks for the replies. I was already sufficiently scared of it breaking which is why I asked the question but the thought of the toothless hillbillies ... (yep we have them in NZ too) really makes me swing toward doing it now!

Bottom line is that going to the Jeep agent here has always cost me over $1000 for just a normal service so I hate to think what the belt service would cost. As soon as it ran out of warranty, I moved back to my trusted local guy. But I still get stung for parts as they come from the jeep agent. They have a monopoly in NZ so while I love my Jeep, the cost of service and the attitude of the dealership would make me have second thoughts about another one!

Am thinking maybe the answer is to start buying the parts for services direct from the States. Can someone please tell me what the tool is that the agent told my mechanic would prevent him from doing the job?

Cheers
Jo
I had a 2005 liberty with the 2.8 crd. I had a local mechanic friend do the timing belt and water pump. He didn't mention needing any special tools. Turned out fine. The jeep dealer wanted $3000 for the job. Parts and labor with the local mechanic was $1100.

Not sure if much changed from 2005 to 2009

__________________
2011 JK Rubicon 2 door, 3.5" X-Factor mid arm, 1.25" Daystar body lift, 40x13.50R17 Nitto Mud Grapplers.
DrHolliday is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
rebuilding your engine?? Get Stroked!!! jeeper95yj YJ General Discussion Forum 6 01-01-2014 04:47 PM
engine question. reddawgjeep TJ General Discussion Forum 10 08-26-2011 07:11 AM
Check Engine Light Question? usamp125 TJ General Discussion Forum 1 08-16-2011 06:05 AM
Question about JK engine power Eichster JK General Discussion Forum 11 06-06-2011 11:16 AM
Engine Oil Viscosity Question ranwade TJ General Discussion Forum 5 05-24-2011 08:57 PM



» Featured Product

All times are GMT -5. The time now is 11:59 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC