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replacing cams and lifters


RavoHimself

RavoHimself

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how much do i need to take off to replace a cam and lifter. just the valve cover and rockers right?
 


Big Jim M

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Nope!

RavoHimself said:
how much do i need to take off to replace a cam and lifter. just the valve cover and rockers right?
Click to expand...
It is a much bigger job than that. Most engines, the heads must come off to replace a lifter.
For a camshaft the lifters must be pulled and the entire front of the engine parts must come off. Then the radiator must be pulled and in many instances the grill also.. Then the camshaft can be pulled and replaced with a new one.

Cams and lifters ain't easy-peasy..
Big Jim:hottubfun::wub:
 
RavoHimself

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i meant lifters and push rods. my bad. the cam shaft is staying. i only said cams because i know i have roller cams. i think we pulled one of the lifters through the hole in the head when i had it apart before hand. i dont remember if the head was on or off
 
daniel3507

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Big Jim M said:
Most engines, the heads must come off to replace a lifter.

Big Jim:hottubfun::wub:
Click to expand...
Damn i didnt know that. Of course ive only done one cam swap and it was on an LS motor and it sucked.
 
RavoHimself

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anyone know
 

rusty70f100

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In order to replace the lifters, yes, you have to remove the heads. The intake ports are just above the lifters, making removal impossible unless the heads are already off.

I don't know what's making you think you need to replace the lifters, however, the pushrod end / rocker arm joint is where most of the wear in the valvetrain takes place on a 4.0L. If you're troubleshooting a valvetrain noise, that should be the first place to look.
 
RavoHimself

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really. because when i put the engine together the hole where the push rod goes in seemed to be big enough for the lifter to fit through. i didn't know that about the rocker though. i was planning on replacing that too anyway but the less i have to take off to do it all the better
 
daniel3507

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I cant really help with the cam and lifter question but since you are replacing rockers and rods go with delta cam hardened ones.
http://deltacam.com/
 
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