jagman Posted November 11, 2018 Report Share Posted November 11, 2018 On the A14 engine exhaust manifold there are threaded openings on either end. What size are they? I need to plug them with something since I no longer need whatever they were intended for. Recommendations would be appreciated. Quote Link to comment
Mattndew76 Posted November 11, 2018 Report Share Posted November 11, 2018 Metric Threaded. Measure the ID of the two threaded holes with a caliper. Then check it to the Starrett Drill & Tap chart Found on a google search. Or Measure the ID and go to your local ACE hardware / Hardware store and in the hardware section there is thread samples at the end of each row of bins. Match the size to any of the Metric samples displayed. Buy the matching allen socket stud and a jam nut with tension washer. Or ZINC plated bolt of matching thread. Quote Link to comment
datzenmike Posted November 11, 2018 Report Share Posted November 11, 2018 Also probably pipe thread, not a fastener, so it seals as it is tightened. One would have been for the EGR the other for the air injection system. Quote Link to comment
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