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oil pump question - what is this hole for?

Old 02-08-2012, 02:20 AM
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Default oil pump question - what is this hole for?

here are two pics of the oil pump that came out of the car. dude's pointing at a hole that looks like it got filled.





here's the new pump with a wide open hole





why was it plugged and do i plug the new one?
i don't get it...school me
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Old 02-08-2012, 02:26 AM
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I do believe this was used for a dip stick on the FWD cars using the Miata motor/block.
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Old 02-08-2012, 03:17 AM
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FWD dipstick

plug p/n 9930-71-000
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Old 02-08-2012, 09:06 AM
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thank you guys
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Old 02-08-2012, 10:43 PM
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Yep, we had to take care of that hole on the pump I ordered for my ride.
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Old 02-08-2012, 11:27 PM
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silicone?
epoxy?
or the plug that sav mentioned?
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Old 02-08-2012, 11:33 PM
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I say invest in a cheap tap set from HB and do it right.
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Old 02-09-2012, 06:52 PM
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i'm gonna get the plug from mazda
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