Non-Ford Project Thread
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Posting Guru
Joined: Aug 2004
Posts: 1,394
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From: Moundridge, Kansas
Originally Posted by Ultramagdan
Here's one: My 2000 Grand Cherokee with the 4.7L has stuck lifters and a blown head gasket. A rebuilt long block is $3K and a used engine is almost as much. We really like it but I'm thinking it's time to move on. I've gone back and forth on this several times and I'm still chewing on it.
Post Fiend
Joined: Feb 2000
Posts: 11,496
Likes: 6
From: Kansas
It has the overhead cams and 113,000 on it. That motor design, I have found out has a bad habit of caking up and this causes the problems I have. If I do a top end I probably need to do the rings to.
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Posting Guru
Joined: Aug 2004
Posts: 1,394
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From: Moundridge, Kansas
Originally Posted by Ultramagdan
It has the overhead cams and 113,000 on it. That motor design, I have found out has a bad habit of caking up and this causes the problems I have. If I do a top end I probably need to do the rings to.
Post Fiend
Joined: Feb 2000
Posts: 11,496
Likes: 6
From: Kansas
It has alum heads on it. I have not priced rebuilding the current engine just because it seems simpler to get a rebuilt unit delivered. The more I look at it, the more it appears this will not be cheap. When I called the salvage yard at Concordia they said it would take a while to find a running 4.7 but they had a whole list of them that were broke.
Hotshot
Joined: Mar 2001
Posts: 13,561
Likes: 81
From: Manhattan, KS
Maybe you just swap a hemi into it. Really, I'm just kidding, but only 113K and a 2000 is not that many miles or age to have the engine go belly up on you. I usually expect that I'm going to get at least 200k before any major engine repairs.
Hotshot
Joined: Mar 2001
Posts: 13,561
Likes: 81
From: Manhattan, KS
Keep us posted on how it turns out. How did you flush the engine with diesel? Did you just fill the pan with diesel and turn it over a few times to build oil pressure? What is the "back from the dead" proceedure?
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Lead Driver
Joined: Sep 2004
Posts: 7,208
Likes: 8
From: Wichita, KS
Yup, let us know Dan. Folks used to say to pour a bit of tranny fluid through the carb while the engiine was running. Let us know.
Been workin a bit more on the trailer. Came in to take a lunch break.
Been workin a bit more on the trailer. Came in to take a lunch break.
Post Fiend
Joined: Feb 2000
Posts: 11,496
Likes: 6
From: Kansas
Update:
For the first treatment I added 3 qts of diesel to the 6 qt of oil. Overfilled? You bet, but I'm not going to drive it, just idle. Think I did about 6/7 cycles of starting it cold, letting it warm up and idle for about 20 minutes. Shut off and let it cool down. Lifter noise unchanged. Drained oil, new filter and put in 3 qts of oil and 3 of diesel- 50/50. Thought about adding another qt of diesel but decided not to. After the 2nd cycle it started up with no clatter. Let it sit all day and started it again - no clatter
Drained the mix and installed fresh oil and a new filter. Tomorrow I'll start it cold with the oil and see how it does. Interesting to look at the oil when it pours out of the pan.
For the first treatment I added 3 qts of diesel to the 6 qt of oil. Overfilled? You bet, but I'm not going to drive it, just idle. Think I did about 6/7 cycles of starting it cold, letting it warm up and idle for about 20 minutes. Shut off and let it cool down. Lifter noise unchanged. Drained oil, new filter and put in 3 qts of oil and 3 of diesel- 50/50. Thought about adding another qt of diesel but decided not to. After the 2nd cycle it started up with no clatter. Let it sit all day and started it again - no clatter
Drained the mix and installed fresh oil and a new filter. Tomorrow I'll start it cold with the oil and see how it does. Interesting to look at the oil when it pours out of the pan.
Last edited by Ultramagdan; Mar 27, 2008 at 08:11 PM.
Postmaster
Joined: Aug 2003
Posts: 3,705
Likes: 4
From: Wichita KS
Make sure when you drain the oil the motor is at operating temp so the oil is nice and thin and will come out of all the little creveses.
After you get done with the treatment I would recomend a lil Lucas (like 1/2 ot Lucas then fill with recomended oil)
Also, what brand of oil filter are you running?? If it don't have the anti-drain back valve that can cause some of the valve train noise you hear. Stick with quality filters like Wix, just stay away from Fram!!!
After you get done with the treatment I would recomend a lil Lucas (like 1/2 ot Lucas then fill with recomended oil)
Also, what brand of oil filter are you running?? If it don't have the anti-drain back valve that can cause some of the valve train noise you hear. Stick with quality filters like Wix, just stay away from Fram!!!
Postmaster
Joined: Aug 2003
Posts: 3,705
Likes: 4
From: Wichita KS
Originally Posted by Ultramagdan
I didn't think about the Lucas additive. Yup, made sure the engine was at operating temp when I drained it. Fram is a four letter word and not allowed on my vehicles. You can't beat a Wix filter.
As a rule I can't stand additives, they only cover up a real problem. However Lucas isn't an additive, it's and oil stabilizer. It will help lubrication at start up which is where 99.9% of all engine damage starts!