LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What size tap to chase threats in O2 fitting in pipe.

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Old Mar 6, 2003 | 08:03 AM
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gearheads78's Avatar
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What size tap to chase threats in O2 fitting in pipe.

Changing 02's and one came out perfect the other left its threads in the pipe. Does anyone what size tap these things are?
Old Mar 6, 2003 | 08:29 AM
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Anyone?
Old Mar 6, 2003 | 10:19 AM
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For anyone curious to the answer, it is 18MM. A 18mm spark plug tap works perfect to clear up messed up threads.

Thanks to Speedtek in Dallas for answering me and fixing my problem when I went in this morning.
Old Mar 6, 2003 | 02:33 PM
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Glad you posted the answer even though no one was able to post it before you did.
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