exhaust manifold question

[Steeveedee]

Originally Posted by Ultrasummer

Interesting. So if I bought new ones, I could buy ones without those plugs and all would work just dandy?

Provided that one of the plugs is the leak. If they have square heads, they are probably 1/4" taper pipe plugs, but the threads in the manifold are for 5/16" B-nuts like one finds on an inverted flare line. If one of those is leaking, just remove it, clean the hole and put in a 5/16" B-nut plug. If the threads in the manifold are toast, use a little JB Weld on the threads. Note that the 5/16" refers to the tubing, not the thread. I forget what the thread actually is atm, but if you go to the parts store, they can sell you that B-nut plug. Common as dirt.