1 1/4" bung thread chasing ideas?

[kdm73091]

I coulda done that but i just bought a tap it was only 40$ ha

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[atomicjoe23]

Good deal. . .since you are only cleaning the threads up and not cutting them that should do just fine. Glad you found something.

[kdm73091]

Yea and ill always have it for other things

[partybarge_pilot]

Do not use an impact to drive a tap through a bung. I had to remove a broken tap from a trailing arm becuase someone though it was a good idea. Not fun or easy............

Use good taping fluid like moly-d and a good tap wrench. A cresent wrench can be used it your crefull not to pull on just the handle, keep one hand on the tap when under load to keep it from cutting off center.

[kdm73091]

I just used the lathe lol. Worked perfect

[atomicjoe23]

Good deal. . .yeah, I don't know who would think an impact wrench is a good idea with a tap! Trying to remove a broken tap is not fun, even in a fully equipped machine shop.

[kdm73091]

Haha yea i could imagine

[Wild bill]

Go to e bay and type 1 1/4 tap. Your problem will be solved. A good used tap will cost you $14. Or bid on one.

[Hoffman]

Take'm to the machine shop and have them cut the threads. I had to have 16 1 1/4 bungs recut after tig welding the bungs. I had left and right handed threads so the taps were more the than the machining.

[atomicjoe23]

The machine shop probably ran a tap through them which is why it would be so cheap. . .picking up pre-existing internal threads with a single point tool is not a fun or fast undertaking! Once you pick them up chasing the threads with a single-point is quick, but you can absolutely ruin a part if you don't pick the threads up perfect. . .