So during my Remflex gasket install to help solve this header leak, i checked for the air injection ports and sure enough, there they are... im still going to put the remflexs in because they have such good reviews here, but now i need to know how to plug those ports!!!... i read that they are threaded but the picture i saw of one and from what i can see of mine, i didnt see any threads... so how do i plug these suckers so i can finally enjoy my car completely!!

Go to the hardware store and buy a tap thread them and use allen plugs.

I have always cleaned the holes out well and plugged with JB and smoothed over with my finger while still wet and never had a leak or plug fall out.

i was thinking jb weld too... because the headers are in the car and even disconnected they dont fall out of the way enough to get a tap in there... probably gonna have to raise the whole motor up to get in there with a tap... but i could definitely get my finger and some jb weld in there as it sits.....

anyone else use jb weld successfully??...

do you happen to remember the size off hand?... i read 1/4" online... and the tech guy at Aero (whose heads im using) said 1/4 or 5/16... not sure which...

They are 1/4 by 20 and need to be at least 3/4in long. You will find some that go in without tapping - the others are really easy to tap. I don't think they are cutting into iron - just into the old crusty carbon deposits. Be sure to use locktite red as I have blown some out before! Also don't be surprised if you still have a leak after they are filled - I'm still chasing one on the drivers rear (of all places) with my Headman Long-Tubes. I may have to cut the flange AND use those thick carbon gaskets AFTER yet another removal for evaluation of those stubborn ports. I'm beginning to think that the JB-Weld idea would have been much simpler. BTW - brake and carb cleaner works good to clean them out but be sure to wear eye protection - DAMHIK!

I used JB weld also. Worked for me.

Threading and installing plugs is for sure the best way but it's all of work trying to seal something so simple.

Especially when the engine is already in the vehicle.
JB Weld is a great option and another alternative is taper pins.

Tap them in the holes. Chisel off the remaining. Install the headers.