LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

EGR question...on MAC headers

Old Mar 19, 2004 | 12:36 PM
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EGR question...on MAC headers

i bought my MAC headers used and on the EGR tube the EGR stuff is still hooked up...the screw in metal is stationary but the smaller tube with the black piece that connects to the hose(on the car) can do a 360 degree turn..i can move it seemlessly...but the actual tube is stationary...is this ok..or should this piece not be moving..(i dont want a leak there)..thanks for the replies
Old Mar 19, 2004 | 01:07 PM
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Those are the AIR fittings not the EGR tube. I don't know if it should move or not but I think it does move a little. It's no big deal since it can easily be removed once the headers are on to fix or replace it if it leaks.
Old Mar 19, 2004 | 01:34 PM
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just got one more bolt on the front passanger side (the one connected to the bracket for the alternator) after i get this bolt off (which is impossible to get to) will i have to use the same bolt b/c doesnt that bracket have to be in the same position for the alternator to go on correctly?
thanks russ
Old Mar 19, 2004 | 01:48 PM
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I think you are referring to the bar type bracket that bolts to the back of the alternator and connects to the manifold?? I remember there being something similar to that. Anyway I usually never put those back brackets back on since there are always two large bolts that hold in the alternator anyway. I feel the two large bolts are sufficient. I always have a small pile of useless left over stuff that they put under the hood that isn't really needed.
Old Mar 19, 2004 | 02:55 PM
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ya thanks...did you clean up your exhaust ports(on heads) with anything?
Old Mar 19, 2004 | 04:23 PM
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Yes, you have to reuse that bolt that holds the alternator bracket. Why not put the bracket back on? It's just a little more work to get it on there, and may as well have the piece of mind. It is carzy hard to get to though. I was able to use either a closed end wrench, or a socket wrench with a swivel socket on the end to get to it.

That is the only bolt that you will have to reuse on the new headers. All of the other holes in the headers will use the new bolts.

Dan
Old Mar 19, 2004 | 04:25 PM
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Originally posted by 94zLT1
ya thanks...did you clean up your exhaust ports(on heads) with anything?
A single sided razor blade. Get any buildup off around the ports, especially where the new gaskets will seal. Then I wiped them down good with a rag.

Dan
Old Mar 19, 2004 | 04:27 PM
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Re: EGR question...on MAC headers

Originally posted by 94zLT1
i bought my MAC headers used and on the EGR tube the EGR stuff is still hooked up...the screw in metal is stationary but the smaller tube with the black piece that connects to the hose(on the car) can do a 360 degree turn..i can move it seemlessly...but the actual tube is stationary...is this ok..or should this piece not be moving..(i dont want a leak there)..thanks for the replies
You will reuse the AIR stuff from your car so you don't need that stuff.

Dan
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