[Chrysler300] '63 Chrysler - 6 bolt valve cover gaskets

["Mark Lindahl" <mplindahl@xxxxxxxxxxxxx>]

Hi All,

I purchased NAPA (Fel Pro) VS50145R valve cover gaskets.  They are stiffer than the typical rubber gaskets.
These are considered 'premium' on the NAPA website.  

Attributes: Product Features:Increased Fluid Sealability.  Material:Hi-Temp. Coated Fiber. 
http://www.napaonline.com/MasterPages/NOLMaster.aspx?PageId=470&LineCode=FPG&PartNumber=VS50145R&Description=Valve+Cover+Gasket+Set

My problem is the valve covers have never leaked more since I put these gaskets on!

>From the Fel-Pro site, I see they have several material listings, but none have the same wording as the NAPA site.
http://www.federal-mogul.com/en/AftermarketSolutions/NorthAmerica/SealingSolutions/Products/LeakRepair/PerformanceValveCover/RubbercoatedFiber/

I used the sticky 'Permatex' material, cranked down the 6 bolts, not too tight to let the gaskets seat correctly.
The service manual torque spec. was probably for 'cork gaskets'?  They were easy to compress, but this material is like a 'hockey puck'.
I have continued to torque the bolts down, working across the cover, and now I am almost where I fear I may break off the bolts.

If anyone has used these gaskets or other ones that would work better, please make your suggestions.

I tried to buy a premium product, but it has resulted in poor results. 
Before I tear it apart, I would like to hear some advice.  Should I just go back to the standard rubber gaskets?

Thank you,
Mark Lindahl
'63 300 Conv.
 

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