Intake/ Exhaust Manifold installation

[Petescj]

Ok so I know my intake and exhaust manifold have gone through a lot of heat cycles but how do I get the bolts to line up after it's been removed? My intake manifold actually cracked luckily I have another and its partner exhaust manifold. What's the tricks you guys use?

 

[mtnwhlr]

You need to get the bolts started before installing it on the motor and then tighten everything up.

 

[Petescj]

I got it but there was no way I was getting all the bolts started. When I took the manifold off the other engine while removing the last bolt I felt the manifold release tension like a spring. I had 3 to 4 bolts that wouldn't line up no matter how hard I tried. I used studs for the 4 that gave me problems applying persuasion with a 3lb hammer till I got everything lined up. It was a bear. If my brother wouldn't have been here I would've given up but he stuck it out so I had to suck it up.

 

[mtnwhlr]

This is why I like the new style so much better. And why they made the change.

 

[Petescj]

This is the newer style 83 and up. I'll take some pics and explain everything better tomorrow in my build thread.

 

[mtnwhlr]

This is my '84 and the do not hook together

 

[Torxhead]

Pete, you might want to develop some sort of spreader, like this: http://www.ebay.com/sch/i.html?_nkw=exhaust+manifold+spreader. That would work for your application.

 

[Posi]

I know this thread is a few months old, but would like to expand on installing exhaust manifolds on a 6cyl engine.

Jeep put out a service tech letter concerning 2 center holes on the exhaust manifold that do not line up with the cylinder head holes. The fix back then was to enlarge the holes (in EM) with a 29/64" drill bit.

Hope this helps

 

[Torxhead]

Interesting that the manufacturer would put out something like that. I would be concerned about the port alignment.

 

[Peanut Butter]

Pete, I must have missed this when it was first posted. Would love to see a picture of what your talking about. What is the difference between the old style and the new style. When I rebuilt mine, I had no problems with alignment. See my build thread for a picture.

 

[Petescj]

Hmm. Did I bring it up in my build thread? I'll have to go take a look.