82 CJ7 upgrading to 4.0 head - JeepForum.com
 
LinkBack Thread Tools
post #1 of 11 Old 07-31-2021, 08:52 AM Thread Starter
MikeB82
Registered User
 
Join Date: Nov 2020
Posts: 82
82 CJ7 upgrading to 4.0 head

had to replace blown engine and upgrading to 4.0 head casting #7120 and have a silly question. I now have the head and waiting for the cover to come in but it will not have the bolts so my ? is, what size are they and do they have washers or some kind of special washers when they come from the factory? I dont want to use just the bolts if factory had washers. trying to be correct. Thought I could find a set specific to the 4.0 head on a website but been unlucky so far so I have come to source of all things Jeep. thanks Mike


I screwed up, the bolts I am looking for are the ones for the valve cover. My bad. I new what I needed just did not explain myself. sorry! Thanks for the fast reply Axhammer. BTW I am in the Dallas, Texas area.


Last edited by MikeB82; 07-31-2021 at 03:55 PM.
MikeB82 is offline  
Sponsored Links
Advertisement
 
post #2 of 11 Old 07-31-2021, 09:49 AM
Axhammer
Web Wheeler
 
Axhammer's Avatar
1985 CJ7 
 
Join Date: Aug 2018
Location: Moyock
Posts: 2,278
Garage
There are 14 bolts that clamp the head to the block. I do not recall washers on these bolts. Seven bolts have a stud on top, and they are installed on the exterior of the valve cover. The other seven bolts are normal hex headed/shouldered bolts and they are on the interior of the valve cover. My buddy has a box of bolts I can probably scavenge from.

I bet if you called Russ Pottenger out in CA he would be able to sell you a new set of head bolts, or you could call Keith Newcomer in NC. Since we don’t know what side of the country you are located in. Where are you located?
Attached Thumbnails
8E5957F9-FF24-44B2-AA37-FD7ABB6BED39.jpg  

Why do I own a CJ? I like to “Balance the wrench and the steering wheel”
1985 CJ-7 Sebring Red, White hardtop, 284 CID inline six (4.7) TF 999 auto
2020 JLU Black, Black hardtop, EcoDiesel, 35’s on 2” Mopar lift
View my Pontiac in my profile
Axhammer is offline  
post #3 of 11 Old 07-31-2021, 03:56 PM Thread Starter
MikeB82
Registered User
 
Join Date: Nov 2020
Posts: 82
see my edited information since i messed up the original with a bad description. Sorry.
MikeB82 is offline  
 
post #4 of 11 Old 08-01-2021, 09:14 AM
Axhammer
Web Wheeler
 
Axhammer's Avatar
1985 CJ7 
 
Join Date: Aug 2018
Location: Moyock
Posts: 2,278
Garage
When I was assembling my engine, I reinstalled the thick cast valve cover that came with my engine when I bought it. I used common grade 5 hex head bolts & lock washers. After installing it, I noticed the VC had cracked, rendering it useless, so I removed it. When I mention this to my Jeep buddy, Lee, who had sold me the parts, he said I needed the later stamped steel VC, and he gave me one.

The newer stamped steel valve covers use a special steel washer, that serves as a spacer. When you tighten it down, it will compress the rubber grommet and the VC gasket to the correct compression, and the washer will prevent it from compressing it any more. Based on my experience, I would suggested you buy a stamped steel VC, and if you do you need to get the OEM steel washers. The new gasket for the steel VC came with new rubber grommets, to go on the OEM washers (spacers).

If you already have the thick cast VC, you can install it with common hardware, just be careful to NOT over tighten, like I did.

So NO, your question is not silly, it has merit, and it is one of many things I learned about the Jeep 4.0 inline six engine.

I’ll post some pictures of the thick cast VC.
Attached Thumbnails
229A5D15-8F35-437C-8A66-1F545A82F22A.jpg   A2413500-A55F-47F9-8BD3-182E7E7A06DC.jpg   AE43C4EB-6A15-44CA-90C3-CE67C77A1BB3.jpg  

Why do I own a CJ? I like to “Balance the wrench and the steering wheel”
1985 CJ-7 Sebring Red, White hardtop, 284 CID inline six (4.7) TF 999 auto
2020 JLU Black, Black hardtop, EcoDiesel, 35’s on 2” Mopar lift
View my Pontiac in my profile
Axhammer is offline  
post #5 of 11 Old 08-01-2021, 09:34 AM
Axhammer
Web Wheeler
 
Axhammer's Avatar
1985 CJ7 
 
Join Date: Aug 2018
Location: Moyock
Posts: 2,278
Garage
I reused the same common grade 5 hex head bolts & lock washers when I installed the stamped steel VC. I have had this engine running for almost a half year, and at least 5K miles, and the VC has not leaked a drop that I can tell. In fact, I do not believe the engine leaks anywhere, it’s sealed up tight as a drum. The fact that the engine does not leak, is one of many things I like about the improvements Chrysler did when they revised the AMC 258.

In the picture before I pained the steel VC, you can see the large washer/spacer on each VC attachment bolt. You need these if you are using the stamped steel VC.
Attached Thumbnails
C81A931B-C060-47AA-A112-1304FB9A44D7.jpg   88310F78-AF7B-45F0-8A00-0D2444DC1CFB.jpg   E7DF2A12-FD72-433C-A03B-886CB0D706F0.jpg  

Why do I own a CJ? I like to “Balance the wrench and the steering wheel”
1985 CJ-7 Sebring Red, White hardtop, 284 CID inline six (4.7) TF 999 auto
2020 JLU Black, Black hardtop, EcoDiesel, 35’s on 2” Mopar lift
View my Pontiac in my profile
Axhammer is offline  
post #6 of 11 Old 08-03-2021, 04:45 PM
Axhammer
Web Wheeler
 
Axhammer's Avatar
1985 CJ7 
 
Join Date: Aug 2018
Location: Moyock
Posts: 2,278
Garage
Another picture or two with more more detail. It looks like the FWD Fitting on the VC, is connected the the charcoal canister. You can’t see it in this picture, but that’s where it goes to on my engine.
Attached Thumbnails
A4C68CF4-FF9E-492D-9808-54BE79EF2D80.jpg   CA12F734-9A84-4476-A121-7381CA699EE3.jpg  

Why do I own a CJ? I like to “Balance the wrench and the steering wheel”
1985 CJ-7 Sebring Red, White hardtop, 284 CID inline six (4.7) TF 999 auto
2020 JLU Black, Black hardtop, EcoDiesel, 35’s on 2” Mopar lift
View my Pontiac in my profile
Axhammer is offline  
post #7 of 11 Old 08-03-2021, 07:13 PM Thread Starter
MikeB82
Registered User
 
Join Date: Nov 2020
Posts: 82
thanks for the help. Pics helped a lot in telling me what I need to know. Thanks, Mike
MikeB82 is offline  
post #8 of 11 Old 08-05-2021, 06:30 AM Thread Starter
MikeB82
Registered User
 
Join Date: Nov 2020
Posts: 82
where can I find the "spacer/washer" used to install the steel valve cover
MikeB82 is offline  
post #9 of 11 Old 08-06-2021, 09:37 AM
Axhammer
Web Wheeler
 
Axhammer's Avatar
1985 CJ7 
 
Join Date: Aug 2018
Location: Moyock
Posts: 2,278
Garage
If you watch this video it will show the bolts, grommets, and washer/spacers, and how to install them. As far as where to get them. You will have to locate some from a used engine, or a used source, someone that works on these old 4.0 engines, unless you can find a replacement part number. I did a little searching and saw a VC gasket that had metal inserts that the bolts went through, built into the gasket, so they would provide the same crush stop feature.


Why do I own a CJ? I like to “Balance the wrench and the steering wheel”
1985 CJ-7 Sebring Red, White hardtop, 284 CID inline six (4.7) TF 999 auto
2020 JLU Black, Black hardtop, EcoDiesel, 35’s on 2” Mopar lift
View my Pontiac in my profile
Axhammer is offline  
post #10 of 11 Old 08-06-2021, 09:51 AM
Axhammer
Web Wheeler
 
Axhammer's Avatar
1985 CJ7 
 
Join Date: Aug 2018
Location: Moyock
Posts: 2,278
Garage
Which VC do you have? The thick cast VC or the thin stamped steel VC?

Why do I own a CJ? I like to “Balance the wrench and the steering wheel”
1985 CJ-7 Sebring Red, White hardtop, 284 CID inline six (4.7) TF 999 auto
2020 JLU Black, Black hardtop, EcoDiesel, 35’s on 2” Mopar lift
View my Pontiac in my profile
Axhammer is offline  
post #11 of 11 Old 08-10-2021, 06:43 PM Thread Starter
MikeB82
Registered User
 
Join Date: Nov 2020
Posts: 82
been out of pocket a few days. Had to work to pay for this project. I have the stamped steel one I found on Ebay that is exactly like the one in your pics. and it had the grommets and washers with it and in great shape.
MikeB82 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome