Compression Ignition Addict
Join Date: Feb 2009
Location: Nacogdoches, TX
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Put it in the manifold. You won't get shavings in the turbo. Just do it.
Manifold, you're measuring temps just after the cylinders. That's what you're protecting. More than 1250*F for too long, you might start slinging slag.
Post turbo, the temps have already cooled off up to, if not more, than 600*F. Hard to *guess* what temp the manifold is then, huh?
Get the proper sized bit for the tap, start a small pilot hole going slow so the shavings stay in relatively large pieces and they fall down, then get your proper sized bit doing the same thing. Don't spin it fast and make tiny dust. I believe the manifold is cast anyway, so going slow allows for large pieces. Then vacuum if you feel like it. And tap it. I didn't vacuum. I just used a pilot bit, normal bit, then tap.
2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
330,000 + miles