4.7 Valve Cover Bolt Size? - JeepForum.com
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post #1 of 14 Old 03-26-2020, 05:10 PM Thread Starter
Wabatuckian
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4.7 Valve Cover Bolt Size?

Hello,

I have a couple rounded-off valve cover bolts, and I need to replace my lifters.

Not wanting to spend $15 per bolt, and I'm sure they're of a size that can be found elsewhere.

Does anyone know the size, so I don't have to pull one and go hunting?

Thanks!

Josh

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post #2 of 14 Old 03-27-2020, 10:15 AM
99wjtx
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You're probably going to have to pull one if you can and take it with you to the hardware store. Whether or not they can be removed without first pulling the cover off I don't recall. I just remember there's some kind of mechanism there that makes pulling the bolts from the cover a real PITA. The factory parts manual says that the bolts weren't sold or stocked separately from the cover itself but I believe they can be removed.

Otherwise, if you Google far and wide long enough you may find mention of the size in a forum somewhere. There were a lot of 4.7 engines put in Dodge trucks too.

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post #3 of 14 Old 03-27-2020, 04:26 PM
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^ Yeah, no info on the WJ parts list for the 4.7 valve cover bolt size. But odd if they say it's not serviceable they do list the part number plus size for the 4.0 valve cover bolts which are likely just a different size.
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post #4 of 14 Old 03-27-2020, 04:56 PM
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How in the hell can anyone round off a valve cover bolt........


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post #5 of 14 Old 03-27-2020, 04:59 PM
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First, are you certain that the bolt threads are stripped? The bolt is steel, threading into aluminum. It's far more likely that the threads in the head are stripped out.

However, to get the bolt out to see what is really stripped, loosen the bolt until it is free from the threads. Then you can gently pull it out with a pair of pliers. It has a collar/spacer crimped onto it that sets the spacing for the gasket and prevents pressing down too hard on the valve cover. It's held in place by a rubber grommet. Because of that collar, replacing just the bolt will be tricky. You'll need to figure out a way to get it off and move it to the new bolt.
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post #6 of 14 Old 03-27-2020, 05:02 PM
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Quote:
Originally Posted by 97Mule View Post
How in the hell can anyone round off a valve cover bolt........
My guess is that they tightened the crap out of it, trying to stop a leak. But those collars stop it from going down any further.

For some reason, I was thinking stripped threads when I read the OP.
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post #7 of 14 Old 03-27-2020, 08:42 PM
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Just go to the junk yard and find some in good shape..

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post #8 of 14 Old 03-27-2020, 08:42 PM
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Here are a couple I pulled off an 08 -4.7. They are 1 1/4” long not including the head. Metric #6 1.0 Not sure if you can reuse the metal sleeve from the old bolts on to the new ones. Also not sure if they are the same as a wj. Hit a junk yard! I might do the passenger side valve cover on my 04 tmoro. If so I’ll confirm the sizes
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post #9 of 14 Old 03-28-2020, 03:56 AM
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... I might do the passenger side valve cover on my 04 tmoro. ...
Be sure you have a fist full of singles for the swear jar!
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post #10 of 14 Old 03-28-2020, 08:31 AM Thread Starter
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Quote:
Originally Posted by 97Mule View Post
How in the hell can anyone round off a valve cover bolt........
It looks like they rusted.

Josh
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post #11 of 14 Old 03-28-2020, 08:33 AM Thread Starter
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Quote:
Originally Posted by 97Mule View Post
How in the hell can anyone round off a valve cover bolt........
Some time before I got the Jeep, a couple bolt heads rusted. I don't know why. It appears that side of the engine was wet.

Josh
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post #12 of 14 Old 03-28-2020, 08:35 AM Thread Starter
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Quote:
Originally Posted by LelandGray View Post
Just go to the junk yard and find some in good shape..
The local junkyard has no 4.7 Jeeps or Dodges last I checked. I'll have to call again.

Josh
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post #13 of 14 Old 03-28-2020, 08:37 AM Thread Starter
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Quote:
Originally Posted by Spyder62 View Post
Here are a couple I pulled off an 08 -4.7. They are 1 1/4 long not including the head. Metric #6 1.0 Not sure if you can reuse the metal sleeve from the old bolts on to the new ones. Also not sure if they are the same as a wj. Hit a junk yard! I might do the passenger side valve cover on my 04 tmoro. If so Ill confirm the sizes
Thank you!!!

Go slow. I already did the driver's side, and then ran into those rounded bolt heads when I went to do the passenger side.

So, I pulled the A/C to get to them. Looks like pulling the AC would be the easier way to begin with. I need a new compressor, so I just figure I'll do all that at once.

Josh
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post #14 of 14 Old 03-29-2020, 08:28 AM
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FSM states "unbolt A/C compressor and move to the side"....

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