1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Tapping the front cover

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Old 08-23-06, 11:04 AM
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Tapping the front cover

were at exactly should i drill and tap on the front cover and what size hole should i drill and what thread size should i tap. i am rebuilding my engine and i want to do this just incase i want to go turbo.
Old 08-23-06, 09:32 PM
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https://www.rx7club.com/showthread.php?t=508562

I think this is what your looking for. As far as diameter, Im not sure. Find out what -AN size the turbo oil feed hole is on the turbo, or ask around...
Old 08-24-06, 02:55 AM
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1/2" Npt
Old 08-24-06, 04:29 PM
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Here is where I tapped mine, then installed a brass plug untill I'm ready for the turbo. There is a circular depression at this spot, perfect for the tap.

Attached Thumbnails Tapping the front cover-p8010066.jpg  
Old 08-24-06, 07:14 PM
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wow. that look sperfect...as tho it was meant to be
Old 08-24-06, 08:45 PM
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Perfect if you haven't taken all of that room up mounting the enormous S5 electric OMP for your swap
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