cruiser54

Cruiser’s Valve Cover Mod
Most early and even later Renix 4.0s could be bothered by excessive oil in the air cleaner box. A fix from my old days as Service Manager at a Jeep dealership follows. Information was provided to me from a buddy at JeepTech during those days. I don’t believe it ever came out in a Technical Service Bulletin.
　
Remove the valve cover and turn it over. Next, remove the fluted tubes that are now facing you by removing three screws on each. Chop 1 inch off each of them. Then, about a half inch up from the area where you just sawed them off, drill a half inch hole in the tubes so the holes will face the rear of the valve cover. Clean and de-burr/sand all rough edges nicely, clean with solvent, and reinstall. Don’t be concerned about the chintzy gaskets that will probably crumble into oblivion when you remove the fluted tubes. They can go back together without gaskets.

DESERTXJ206

Thanks cruiser again for the write ups. I was having blow by issues until I took the rear orfice tube off and cleaned it out with Carb cleaner. Ever since then I havnt really notice a blow by issue.

cruiser54

Good.

DESERTXJ206

I will keep that write up in mind may do it just for the hell of it. Valve cover gasket and head gaskets going to get replaced soon. My head gasket seeps above the distributer

cruiser54

I do it on every Renix I have teh valve cover off of. But, it's no substitute for maintaning the CCV lines.

DESERTXJ206

Has anyone here dropped the aw4 before? IV got to get to my freeze plug and I'm sure there is some secrets you guys may know to speed it up and do it quick.

cruiser54

First off, remove the 2 top bell housing bolts first, before loosening any others. They're a reverse Torx, an E-something.

DESERTXJ206

IV heard some people say they have left those 2 our on reinstall. You think it would really affect anything if I left em out?

DESERTXJ206

Also what do I do about the shifter and center console. Also I heard removing it with the transfer case attatched is best. So what would I have to do there?

lukeincolorado

The two on top are e 14 or e 16's i believe

cruiser54

Yes. Go to the hardware store and get regular bolts without the freakin' e- whatevers.

DESERTXJ206

My wife's stock xj last week.

Kuro89

I did the manifold gasket and had to weld the cracks on the exhaust, just needed a few extensions and swivels. I also labeled everything I disconnected or unbolted even a few things I did t touch, it took me about a day but that included a lot of beer runs and what not

DESERTXJ206

OK thanks, I assumed at least 4 hours if it was just the gasket. I'm going to dig deaper and see if iv got a crack or just loose / missing bolts.