Quote:
Originally Posted by csgillaspy
Would a taper or straight tap be better. I wanna try retapping it first, replacing the oil pan would be a last option.
I have a small magnet I moved around the bottom of the pan and didn't get anything out. Most of the threads fell out with the bolt
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Merk said some aluminum pans had straight thread. I'm a NF guy and all mine have cast iron pans which are 3/8" NPT.
Do you have some way of measuring the hole? Maybe yours was originally a straight thread.
If you decide to tap the pan while it's still bolted to the engine, FILL the tap flutes with grease to catch the chips. Replace the grease often to reduce the chance of chips staying in the pan.