questions about a 4.0L engine?

[SINCITY192]

Hi, everyone
I have 94 zj with a 4.0L 6cyl engine

I was at the junk yard today and I was looking at the 4.0L in a 97 zj and it was the best looking 1 on the lot. All the 94 zj's was mostly v8's or really badly worn 4.0L engines, so I decided to take the head off the 97 zj​

when i got it home I called up a few machine shops and 1 of them told me that just because i pulled a 4.0 head doesnt mean its gonna fit my 94 zj 4.0...
so my question is.. will the 2 go together? and the machine shop qouted around 195 for machining and servicing the valves is that about right?
Im in NC now so i dont know what any good shops are!!

 

[SINCITY192]

Looking at the part numbers for the cylinder head in autozone
94 zj CYL H. part # is 2A30 and for a 97 zj CYL H. part # is 2A32
I called and ask about the 2 parts and they said they are the same!
I want to be sure before I get it serviced. Thanks

 

[Hellbent]

there are differences among the years, most of them minor. for what you've got and what you're doing-you're fine. same same.

 

[SINCITY192]

there are differences among the years, most of them minor. for what you've got and what you're doing-you're fine. same same.

Thanks hellent!! Great news! Im so glad to hear this!

 

[Hellbent]

one thing to mention, the new head *may* not have a little hole for the temp sending unit in the d/side back corner of the head. check it against your old head. i can't remember if the '94 in a zj had the sending unit hole in the back of the head or not. that would be the only real difference. it's not a huge deal to drill the flat spot and tap it to 1/8 pipe thread if you need that hole there.

 

[Talyn]

Look at the casting number on the driver's side the valve cover area. The earlier one will be 7120, and what is on your 94. The 97 should be a 0630 casting. The main difference that will stop 100% bolt up is the coolant hole on the back of the head for the dash temp gauge. The 97 may not have this, but i have heard reports that some 0630s do. You can drill and tapp a hole there for the temp sender or relocate it else where. IIRC its 1/8" NPT.