02-02-2022, 08:48 PM
(This post was last modified: 02-02-2022, 08:54 PM by Bob Culver.)
With ingenuity much can be done with a drill press and angle grinder but I did not dare suggest....
Most find it difficult to cut threads square but by hand rotating a drill press whilst very gently feeding can cut dead square.
Similarly in a lathe, where even an unbacked hand held die will cut reasonably square.
Unfortunately most commercial bolts have rolled threads with a taper termination and an immediate reduced dia. Ideally both threads should be cut so the larger one can end abruptly. An old stud out of some other car fine for the material. Not everyone has a BSF die. UNF or M8 not approved, but the cyl head will not know the difference.
Most find it difficult to cut threads square but by hand rotating a drill press whilst very gently feeding can cut dead square.
Similarly in a lathe, where even an unbacked hand held die will cut reasonably square.
Unfortunately most commercial bolts have rolled threads with a taper termination and an immediate reduced dia. Ideally both threads should be cut so the larger one can end abruptly. An old stud out of some other car fine for the material. Not everyone has a BSF die. UNF or M8 not approved, but the cyl head will not know the difference.