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Unread 06-26-2003, 09:41 PM   #1
jeepin cj-5
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Join Date: Sep 2002
Location: frederick, MD
Posts: 276
engine is loud with knocks

I just had the head of my 258 rebuilt but there is still alot of knocking noise in it. can the rockers be adjusted and could it have anything to do with the timing chain

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Unread 06-26-2003, 11:25 PM   #2
Jeep Daddy
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1985 CJ7 
Join Date: Jan 2002
Posts: 1,203
So are you saying that it made this noise before you did the valve job? You may want to look at the bottom end and timing chain/gears etc.

I know that 258's have hydraulic lifters but have never done an initial setup of new lifters on a 258. Chevy's, Mopars, yes, AMC, NO.... Don't you have a Chiltons or Haynes?
85 CJ7 4.0L/SM465/Dana300/AMC20/Dana30, MPFI,154K miles - 33" 12.5's Pro Comp MT's, one piece axles, Detroit Softlocker rear, Lock Rite front, Warn Hubs, 4.56 R&P, 4" BDS lift, Warn x8000i, Warn winch guard, Hi-Lift, Tuffy console, Four X Dr. rocker guards, Rock Hard sport cage, Kilby OBA with 1.75 gal tank and York 10.3cc compressor, Tube fenders by GenRight Offroad, Fabricated rear bumper and tire carrier.
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Unread 06-27-2003, 08:59 AM   #3
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just a guess but its not your head knocking, its your lifters. the 258 is notorious for noisy lifters. how many miles are on the engine? maybe its time for a new cam and lifters.
[COLOR=darkgreen]"character is doing the right thing even if nobody is looking"[/COLOR]
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