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06-22-2016
Installing speed daddy headers. I don't want to delete egr. Can't seem to get this bolt screw thing out. My ratcheting wrench won't fit in the little loop between the pipe and manifold, and a regular one doesn't seem to have enough turn space. How did you guys take yours out. Thanks in advance
06-22-2016
the bolt is on the back of the exhaust manifold, if you have not figured that part out yet.
i used a 10 mm deep socket on a 1/4" drive ratchet aka a little ratchet and socket. flip it on from behind and get to wrenching it off.
06-22-2016
Bolt size depends on year. Newer years are a 13mm. But yeah.. get in there and you'll get it.
06-23-2016
Alright thanks guys.I appreciate it.
06-23-2016
I seem to remember my factory egr to manifold bolt being a goofy 13mm 12-point head. My ratcheting wrench was too big to fit, needed to use a regular one with a tiny turn at a time.
06-23-2016
That's interesting. I have never seen a 12 point on one of them. Only six. But 13 or 10 were the two possibilities
06-24-2016
I'll snap a picture if I can find it in my bucket o w-body bolts. I always ditch it in favor of a 6-point head, though. I believe both times I ran into the 12-point, they were on my 04 Impalas.
06-24-2016
Mine was just a normal 13mm like all the others. Other than #2 plug boot, that was my only hold up. Couldn't get torque on it and when I finally got it free I had to unbolt it 1/12 of a turn at a time. FYI if you didn't notice yet, the SD EGR line doesn't sit flush with the EGR port on the 04+. You'll need a half inch ID washer to fill the gap.
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