Should I replace the lifters? -

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post #1 of 4 Old 10-27-2013, 01:24 PM Thread Starter
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2000 WJ 
Join Date: Apr 2008
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Posts: 47
Wj Should I replace the lifters?

I am in the process of replacing my cylinder head right now and I'm wondering if I should just replace the lifters while I have the head off. The engine has 201,000 miles on it already. There was no lifter tick when I took it off but I just don't ever want to have to take the head of again if possible. The engine has been maintained with quality oil and timely oil changes. What would you guys do?

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post #2 of 4 Old 10-27-2013, 01:56 PM
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1999 WJ 
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I wouldn't. If it aint broke don't fix it.
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post #3 of 4 Old 10-27-2013, 02:20 PM
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I debated with myself regarding changing the lifters when I had my head off my 4.0 WJ earlier this year. I ultimately decided that I didn't want to do the job again because of a lifter, so I put in a new set. Given the relatively low cost of a replacement set, it seemed like cheap insurance.

I do understand some of the arguments for not changing lifters and some folks will say you need to install a new cam with new lifters... blah... blah... blah... . But, I have put new lifters on old cams numerous times and never regretted it. So far, we've put about 8K on our WJ since the new lifters. So far so good.
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post #4 of 4 Old 10-27-2013, 07:35 PM
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The lifters are dirt cheap, replace them. Mine has 240,000+ miles on them and they were concave instead of convex like they're supposed to be. You could clearly see the wear pattern.

Anyway here's the rules:

New lifters on old cam - OK
Old lifters on new cam - NO

If you decide to reuse the lifters for some odd reason make sure you put them back in the exact same order from where they came out. They're a matched set and will cause wear and failure otherwise. Use a quality zinc assembly lube (GM EOS that you can get from your local dealer.) and coat the cam as well as the bottoms of the lifters in it. I use a clean coffee can filled with EOS and 10w-30 engine oil and let the lifters bathe in it until I'm ready to put them in.

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