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I did my search and couldn’t find a post answering this. So I’ll be quick and someone can tell me what approach will be appropriate. I recently traded for a 2004 civic with a D17A2 that was having misfires among other issues, so I’ve broken down the head to replace gaskets and get it resurface. I had to replace 9 valves. Got that reinstalled dirty no real issues. The issue now is there is a cam cap bolt that for some reason has a metal “shelf” on it that was not previously there. I took off the rocker arm assembly with no problems to resurface the head(the caps and valve assembly were one whole thing). I then put it back on to begin timing and noticed I placed the camshaft on 180° off, and wanted to take off the assembly to correct this. I’m now putting it back on and now I have hit this problem with 1 or 2 of them. Tried ugga dugga-ing for one of them bolt and striped part of the bolt’s thread(getting a new bolt now.) The question gets to be, did I install something incorrectly, is the assembly messed up now somehow and needs replacing, or does it just need to be shaved down inside the cam cap hole? In any case. I’m asking if it’s fixable or if a new assembly needs to be ordered. Mind you all the other bolts seemed to go in mostly fine with little to no issues. Thanks a million. Look at pics for metal “shelf in a cam cap hole and the stripped bolt


Stripped bolt from trying to force it to go in with a ratchet

The top circle appears to be possibly another “shelf” at the bottom of the hole, the bottom circle is the “shelf” towards the top of the cam cap hole.

 
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Update to anyone who encounters a similar problem where the cam cap bolts, rocker arm bolts, or whatever you call them won’t easily go into the hole. The assembly for some reason slid on the cap, I was able to readjust each, now all my bolts life smoothly in. Problem fixed👍

 
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Thank you for updating the post with the fix!