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**ohboy321** · 08-13-2019, 05:07 AM

I recently removed one of those tubes from a ram horn manifold I am going to use. I drilled each end of the tube with a bit that was just enough to take some of the tube away without opening up the hole in the casting.

I then drilled with a 21/64 bit and tapped each end to fit a 1/8" NPT (tapered) plug. The plugs fit nice and snug and hopefully stay in place. Picture below.

For me the 1/8" NPT plugs worked because the holes in the casting were not very big to begin with.

08-13-2019, 05:07 AM	#2
ohboy321 Senior Member Join Date: Aug 2015 Location: Dunbarton, NH Posts: 289	Re: Inline 6 EGR tube removal I recently removed one of those tubes from a ram horn manifold I am going to use. I drilled each end of the tube with a bit that was just enough to take some of the tube away without opening up the hole in the casting. I then drilled with a 21/64 bit and tapped each end to fit a 1/8" NPT (tapered) plug. The plugs fit nice and snug and hopefully stay in place. Picture below. For me the 1/8" NPT plugs worked because the holes in the casting were not very big to begin with. Attached Images