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Unread 10-19-2009, 09:39 AM   #1
Jonesie
Registered User
1981 CJ5 
 
Join Date: Mar 2009
Location: Snellville, GA
Posts: 164
Push Rod/Lifter Replacement Question

I am in the process of rebuilding an AMC 360 from an 88 Wagoneer, and during disassembly, I found a bent push rod and that lifter was messed up on the same valve.

I'm going to have a local shop do the block and heads, which includes polishing the cam shaft. I seem to recall reading that if you replace the lifters, that you need to replace the cam. And if you replace the cam, you need to replace the lifters. Furthermore, when I disassembled the engine, I kept the rods and lifters in order, so they could be replaced in the same valve.

Can I replace just the one lifter, or do I need to replace all 16? Similarly, can I replace the one push rod, or do I need to replace all 16?

Also, if I can replace just the messed up parts, do I need a new cam shaft?

Thanks - David

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Jonesie
1981 Jeep CJ5
Working on a 360 V8, T-176, D300 Swap
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Unread 10-19-2009, 10:14 AM   #2
jfwireless
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1976 CJ7 
 
Join Date: Apr 2007
Location: Naples, FL
Posts: 1,417
If you have a faulty lifter and are rebuilding the engine I would just replace then all while you have it apart. As for the push rod you only need to replace the bent one.

Jim
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Unread 10-19-2009, 11:50 AM   #3
JeepHammer
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1973 CJ5 
 
Join Date: Aug 2007
Location: South West Indiana
Posts: 9,952
Ditto.
New cam is better than trying to 'Polish' an old cam, and the same price.
New cam should ALWAYS get new lifters.

You CAN put a new lifter on an old camshaft if you have a lifter that goes out,
But NEVER reuse lifters on a cam if you can keep from it.
Lifters get wear patterns on both the cam face, and the lifter bore sides, and once 'Broke In' should never be moved around or reused with different camshaft.
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Unread 10-19-2009, 12:54 PM   #4
Jonesie
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1981 CJ5 
 
Join Date: Mar 2009
Location: Snellville, GA
Posts: 164
Thanks for the info. I'll be sure to ask my engine guy about this. As for the push rods, I should be OK replacing just the bent rod, right?

Thanks - David
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1981 Jeep CJ5
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