87Chief Posted October 30, 2010 Share Posted October 30, 2010 Hey guys, tonight I drove about 20 minutes in the MJ, once I got to my destination I saw that a whole lot of smoke was coming out from under the hood. I opened it, looked down, got a flashlight and noticed oil was under on the edge of the valve cover going down to the exhaust. (I believe that is why there was smoke) so I saw cracks around the valve cover where the bolts were... I'm thinking it is from the stress of the valve cover since it is so old.. I tried looking for a new one but couldn't find one... Well there are some buy don't look the same as the old... Any help please? Link to comment Share on other sites More sharing options...
vaquaro Posted October 30, 2010 Share Posted October 30, 2010 2.5 plastic valve covers commonly have this malady ( overtightening the bolts and heat warp usually the cause ) The plastic VC's are availible from dozens of sources and cheap or switch to 91+ aluminum type but you will have to re-plumb the PCV/CCV and vent hoses . If you stick with plastic use the Felpro dry gasket and change factory shoulder bolts to 1/4 -20 5/8" flange bolts " , Lock-tite and torque to factory spec.s :thumbsup: Link to comment Share on other sites More sharing options...
87Chief Posted October 31, 2010 Author Share Posted October 31, 2010 I might go with the aluminum... How would I change to PVC? Link to comment Share on other sites More sharing options...
87Chief Posted November 1, 2010 Author Share Posted November 1, 2010 Bump. Also could I grab a VC off of a Cherokee? Link to comment Share on other sites More sharing options...
vaquaro Posted November 1, 2010 Share Posted November 1, 2010 Best to grab all the hoses & fittings from the doner (MJ or XJ ) at the JY when you pick up the aluminum vc Link to comment Share on other sites More sharing options...
87Chief Posted November 1, 2010 Author Share Posted November 1, 2010 Good idea. Can the donor be from the year 91 and lower? Like 86-91? Link to comment Share on other sites More sharing options...
vaquaro Posted November 2, 2010 Share Posted November 2, 2010 Nope , needs to be 91 + I believe :idea: polish it out to a chrome ( Hornbrod ) like finish :thumbsup: Link to comment Share on other sites More sharing options...
87Chief Posted November 3, 2010 Author Share Posted November 3, 2010 So I am assuming a 1998 Cherokee 2.5L would bolt right up? Link to comment Share on other sites More sharing options...
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