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Unread 11-16-2012, 01:04 PM   #1
77ChiefS
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1977 FSJ Cherokee 
 
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Ok, so I have a 77/78 Chief. 360/th400. Since I've been driving it I've been trying to trace all of the odd sounds it has. One that I'm still having trouble with I's a rocker arm tick. I had one shop try to tell me it was a bad wrist pin...I have pulled the valve covers roughly 4 times and every single time I manage top find some of the rockers loose. The motor was rebuilt looking ago but still fresh, 60k. It has said studs but no bridges, tried to buy and install then and they don't fit...it has oblong locking nuts with no washers tisk are very hard to remove and tighten, but when I manage to, the rockers do go quiet. For about 5 minutes...I don't know too much about amc motors so I'm a little lost...also the motor feels stronger than 140hp and it revs to about 4600. I'd like to swap over to full rollers as well.


Last edited by 77ChiefS; 11-16-2012 at 01:15 PM..
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Unread 11-16-2012, 03:53 PM   #2
cruiser54
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Sounds like it's an early 70s engine.
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Unread 11-16-2012, 04:03 PM   #3
77ChiefS
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How early though, I haven't looked at the heads where the pushrods come out but the pivots are round like a Chevy...
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Unread 11-16-2012, 04:56 PM   #4
cruiser54
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See if this helps:

http://www.ifsja.org/forums/vb/showthread.php?t=160126
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Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 11-16-2012, 05:00 PM   #5
77ChiefS
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Cool thanks ill check it out when I get home.
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Unread 11-17-2012, 11:13 AM   #6
77ChiefS
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Same casting number on the head, and it has the oblong ports for the push rods. So I should be able to just slap on some rollers rockers without issues right? I was going to throw some washers under the nuts and some lock tight on the threads till then. should be fine right?

Last edited by 77ChiefS; 11-17-2012 at 12:03 PM..
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Unread 11-17-2012, 11:59 AM   #7
cruiser54
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Quote:
Originally Posted by 77ChiefS View Post
Yup and casting number, and it has the long ports for the push rods. So I should be able to just slap on some rollers with how issues right? I was going to throw don't washed under the nuts and some lock tight till then. should be fine right?
What language is this?^^^
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Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 11-17-2012, 12:02 PM   #8
77ChiefS
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Haha, I believe it's stupid-smart-phone-and-lack-of-coffee-nese...
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Unread 11-17-2012, 05:31 PM   #9
77ChiefS
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These are the rockers that came in my jeep.

forumrunner_20121117_173051.jpg



forumrunner_20121117_173103.jpg



forumrunner_20121117_173113.jpg
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Unread 11-17-2012, 05:34 PM   #10
77ChiefS
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And the same casting number.

forumrunner_20121117_173335.jpg
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Unread 11-18-2012, 06:13 AM   #11
cruiser54
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Early motor then.
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Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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