So last night I got around to replacing my fan clutch with a HD hayden, worked great and cooled down as soon as it hit 200. but as I was closing up I noticed I had a blown valve cover gasket that wasn't previously there, or at least it wasn't noticeable or leaking before. is there any reason the new fan clutch would havfe anything to do with the blown gasket? 4.0 97 discovery 1.

 

No.

I'd check the PCV valve/oil catch.

https://www.roverparts.com/Parts/9205G