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Unread 10-01-2005, 01:05 PM   #1
diesel158
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valve adjustment

I did a search but didn't come up with what I'm looking for. Valve cover was leaking so I pulled it to replace the gasket,of course the plastic cover is full of cracks so that's gotta go.While I have the cover off I figured I'd adjust the valves but there is a clip that joins the rockers together on each cylinder so they can't be adjusted independently.How are they adjusted? Also,1 push rod is turning a little slow. Thanks

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Unread 10-01-2005, 10:08 PM   #2
sloth665
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What year is your jeep and what
engine is in it?
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Unread 10-01-2005, 11:02 PM   #3
Cobra Jeep
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Umm, if they are the bridged type rockers you speak of, then they are not adjustable. The bolts are simply torqued down to spec and thats it, no adjustment.
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'79 Cherokee Chief, 401 MPFI fuel injection, T-18/D-20 and hydroboost. Otherwise stock.
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Unread 10-02-2005, 07:47 AM   #4
diesel158
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it's an '87 with the 4.2. Not being able to adjust the valves is a real bad design.I know they sell a roller rocker kit for that engine,what's the point in not being able to adjust them? There has to be a way.
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Unread 10-02-2005, 10:10 AM   #5
91GTA350
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If i am not mistaken our engines have hydraulic lifters. I think the lifters are suposed to have some sort of automatic adjustment.
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4.2/AX-15/NP-231/SYE/30/8.8/3.55/RE 2.5"/31"
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Unread 10-02-2005, 11:27 AM   #6
diesel158
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yes,we have hydraulic lifters but they should be adjustable through the rockers.
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Unread 10-02-2005, 07:08 PM   #7
Cobra Jeep
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Nope, no adjustment. You just torque them down to spec and go. All jeep 2.5's, 4.2's, 4.0's, and AMC V8's (304-360-401) are like that.
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'93 YJ 4.0L, AX-15, NP-231HD/SYE, 8.8in rear, OME 2.5 lift, WJ knuckle/brake conversion, hydroboost. Warn M10000 winch. Hope to some day build a stroker for it.

'79 Cherokee Chief, 401 MPFI fuel injection, T-18/D-20 and hydroboost. Otherwise stock.
Future mods: NV4500, NP205, high pinion D60 front and smooth bottom D60 rear, e-lockers front & rear. SOA with 35X12.50's
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