89 cabriolet stripped engine block threads for oil pressure sensor

Dec 15, 2014 1 Replies

The head on my 1989 cabriolet was replaced approx. one year ago. Recent increase in oil leaking around sensor threads on rear of engine block. I question that this (disruption of threads) was done at that time. Threads are stripped in block. Can I drill, tap, and use fix a thread or helicoil without disturbing engine oil or coolant flow, or worse yet, both? Also, what size would I drill and thread out to? Thanks for any help or advise that you could give me.


Take it to a machine-shop and have them do it. All it takes is a few chips in the engine and the $$ you saved doing it yourself all go away.

Peter Wieck Melrose Park, PA

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