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Valve cover gasket leaks banished...
#1418620 Thu Jul 29 2021 01:26 PM
Joined: Mar 2014
Posts: 2,520
J
Jon G Offline OP
'Bolter
If you truly want to stop your gasket leaks for once and for all, there are 3 things you can do. Two you know about and one may be a new idea for you:

1. remove all old gasket material from your valve cover
2. carefully straighten the cover's mounting surface very well. Especially at the bolt holes where they always are deformed.
3. go to a hardware store and purchase some 3/16" thick aluminum. Take with you one of your valve cover screws and purchase 4 screws that are about 1/4" longer than the original but with the same thread. You can get 4 washers to use with these if you wish. Your piece of aluminum ought to be apx. 2 inches wide or so to allow you room to cut. Now using cardstock paper, make templates of the inside edge of your valve cover...where it lips upward. Make your template so that it starts at the end of the channel (where the valve cover turns the corner, so to speak) and separates in the center, leaving about 1 inch space at the center. This will produce for you pieces that are a bit less than 1/4 inch wide with little dimples. You will have 4 template pieces now...2 for each side. Using a pencil or a fine-tipped Sharpie marker, trace around your templates onto your aluminum. Now with a saber saw and a metal cutting blade carefully cut out the pieces and use a common file (not coarse but more fine) to dress the edges if needed. Now paint them the same color as your engine. And finally carefully bend the pieces you've cut so that you have a flat part where the screw will be and the ends will taper downward at about 10 or 15 degrees. What you've made are called spreaders and ought to look like the images below. Now glue your new gasket to your head (not the valve cover) using a good sealer like Permatex Aviation sealer and install the new gasket. Now install your valve cover and your new spreader pieces. You'll have to press down on the spreader in the center to get the thread started. Do this for all four screws and when you're finished (if you've done what I said), I promise you will not have valve cover leaks again. I made these about 3 years ago and I haven't seen a single drop outside the valve cover.

If you are really industrious and have the aluminum, I suppose you could do the same thing for your valve lifter cover, but I just sealed mine well and it seems ok.

I've thought about making these as a Stovebolt product, but never have. Ideally I think somebody with an industrial CNC laser would be best set up to do this.

Attached Files
Valve cover spreaders 2.JPG (29.34 KB, 229 downloads)
Valve cover spreaders1.JPG (32.19 KB, 226 downloads)

Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: Valve cover gasket leaks banished...
Jon G #1418879 Sat Jul 31 2021 04:11 PM
Joined: Dec 2018
Posts: 792
F
'Bolter
JonG Why not buy some 3/16 th aluminum in the form of a cast valve cover,install and torque it !!

Re: Valve cover gasket leaks banished...
fixite7 #1418920 Sat Jul 31 2021 10:08 PM
Joined: Jul 2016
Posts: 45
5
'Bolter
Fixite7, I'm more right brain and do not picture in my head too well. Would you explain your idea a little more for me. Thank you in advance.


1959 Chevy Apache Stepside Truck
Re: Valve cover gasket leaks banished...
Jon G #1418921 Sat Jul 31 2021 10:19 PM
Joined: Apr 2005
Posts: 10,098
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
He’s saying go buy a cast aluminum valve cover, install it, torque it and be done.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”



"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)

Re: Valve cover gasket leaks banished...
Justhorsenround #1419011 Sun Aug 01 2021 03:23 PM
Joined: Jul 2016
Posts: 45
5
'Bolter
Clearly stated for me, thanks Justhorsenround.


1959 Chevy Apache Stepside Truck
Re: Valve cover gasket leaks banished...
59rebuild #1419147 Mon Aug 02 2021 05:01 PM
Joined: Dec 2018
Posts: 792
F
'Bolter
59 rebuild I understand that some guys want to stay as original looking as possible,I lean more to the hot-rod aftermarket look. It looks best to me with aluminum valve cover,HEI,split manifold,aluminum intake,and I guess I am the only one in America that runs their truck on straight propane!! As john Milliman says let's all have our fun !!! I sure do !!!!!

Re: Valve cover gasket leaks banished...
Justhorsenround #1419149 Mon Aug 02 2021 05:10 PM
Joined: Dec 2018
Posts: 792
F
'Bolter
Martin Thanks for helping to axplain what I meant,I have about 3 wheelbarrow loads of propane carbs,fuel locks,converters,etc. to choose from. That aluminum looks good to me !!

Re: Valve cover gasket leaks banished...
fixite7 #1419176 Mon Aug 02 2021 08:51 PM
Joined: Mar 2014
Posts: 2,520
J
Jon G Offline OP
'Bolter
Originally Posted by fixite7
JonG Why not buy some 3/16 th aluminum in the form of a cast valve cover,install and torque it !!

Because I don't want one of those !!!


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: Valve cover gasket leaks banished...
Jon G #1419640 Fri Aug 06 2021 06:06 PM
Joined: Jan 2020
Posts: 698
D
'Bolter
Jon G, Is there a way that I can print your threads. Ed


Currently making 1954 3100 better than new and Genetics
Re: Valve cover gasket leaks banished...
Doc.Hall #1419644 Fri Aug 06 2021 06:17 PM
Joined: May 2015
Posts: 4,269
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Originally Posted by Doc.Hall
Jon G, Is there a way that I can print your threads. Ed
Go up to the top and click on the down arrow at Thread Options. One of them is Print Thread.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's

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