foamfoot

Hey all. My first car was a 1991 cherokee. I brought it from 119k to 140k in a couple of years before the harmonic balancer died. I managed to replace that, but shortly after the head gasket blew. I actually ended up replacing the whole head because I kind of thought that the issue was due to overheating.

Here's the thing, everything with the head replacement went fine. I kept the rods in a peice of cardboard in their original positions and everything, torqued the valvetrain to spec, followed chiltons.

Then, putting it back together, I couldn't get the dang valve cover back on! I try to put it on, and it hangs about a 1/4 inch over the front end of the head, leaving a gap. I feel like I've tried everything: re-seated the rods a thousand times, re-torqued the valvetrain. It's actually sat for a long time (2-3 years, going to need to siphon the fuel tank and check the fuel lines, spray oil in the cylinders) because I just can't figure out how to get the valve cover on.

One thing, my head was 1991, stock. The new head was stamped with "94". they are both 7120 heads.

If anyone has any insight, let me know. I'd love it if my first car would run again.

cruiser54

You're not putting it on backwards, are you?

Bugout4x4

Curious clarification so the guys here can help you better. Is it over leaving a gap but sitting flat against the head? Or is it sitting above the mating surface and not going all the way down that is creating the gap?

foamfoot

I'd say that's a possibility given my track record, but I've tried it every way it can go, including upside down and sideways.

The second one; its sitting above the mating surface.

PatHenry

The valve cover did change between 91 and 94, but it seems like the change was primarily due to the size/angle of the PCV fittings rather than the height of the cover.

Another clarification - we're talking about the 4.0 I6 engine, right?

foamfoot

yes, it is the 4.0

Bugout4x4

Cool... the next question would be does the gasket also do this before you even try to put the cover on? And is it one of the composite blue silicone/metal gaskets?

If so there are two things to look at. First, check to make sure the radiator hose is not stopping it from going down. Second, if it has the composite gasket there are bridges that go across. Two of these have alignment holes that drop onto two pins sticking off the top of two of the head bolts. These head bolts have to be in the proper location and the gasket has to match these pins on the left side of the engine when looking at it. All the bolts with the threaded bolthead sticking up go down the right side of the head when looking at it.

Note the pins sticking up off of two of these head bolts?

RocketMouse

If the above... good information hasn't completely resolved your issue... snap a couple good photos of your engine bay with the cover sitting in the position you've described. And upload them to this thread.
That might help us help you faster.

Bugout4x4

Absolutely! that would help greatly! And if you have any trouble doing this please PM me and I can help. We need to get this running!

dans98xj

If you look at the valve cover gasket it locates on a few of the head bolts. if those head bolts are in the wrong location it could be causing the valve cover too not to line up correctly. i would recheck the head bolt locations.

Bugout4x4

Did you get this solved?