How Deep To Tap??
ESPECIALLY in an aluminum (or other soft alloy) I'd do as above, tap a few threads and test it. Just did this myself, some bean brain hay wired a t gauge into a manifold. Had a nice time getting the fitting out. Of course Edelbrock "can't afford" to give us any spare tappings LOL
I've never heard of using a straight pipe tap for conventional tapered pipe fittings which is what this is. A straight pipe tap would be for special stuff, I would think.
My recent "down that road
http://www.forabodiesonly.com/mopar/showthread.php?t=271617&highlight=npt,+tap
My old taps had since the early 70's and some way before that. An old friend taught me that sometimes, it's better to do without a tap wrench. You experiment with nut sizes, put them in a vise, and press the nut on the end of the tap drive square.
ESPECIALLY in an aluminum (or other soft alloy) I'd do as above, tap a few threads and test it. Just did this myself, some bean brain hay wired a t gauge into a manifold. Had a nice time getting the fitting out. Of course Edelbrock "can't afford" to give us any spare tappings LOL
I've never heard of using a straight pipe tap for conventional tapered pipe fittings which is what this is. A straight pipe tap would be for special stuff, I would think.
My recent "down that road
http://www.forabodiesonly.com/mopar/showthread.php?t=271617&highlight=npt,+tap
My old taps had since the early 70's and some way before that. An old friend taught me that sometimes, it's better to do without a tap wrench. You experiment with nut sizes, put them in a vise, and press the nut on the end of the tap drive square.