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tap hole for exhaust pressure check
Don --
Thanks for the great advice. I stuck my head down in the engine hole today to follow your directions.
Most interesting, for me, at least, is that there is a 1/8" pipe thread hole in the exhaust manifold -- just before the flange. Looks as if it's been there for a long time. Is this anything to worry about, or just another way to do the job?
Thanks
Bill
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