Another genius idea

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iamdub

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I may be late to this party, but a friend shared this idea with me. For those performing an AFM delete, you really should plug off the towers rather than rely on the O-ring gaskets to hold back the oil pressure. It's cheap insurance, especially when it costs only $10.

Get a cheap wheel bearing, #A-37 (https://www.oreillyauto.com/detail/...39/5426c6f5d17c/masterpro-bearing/a37/4497499)

Cut the cage apart to get the rollers out and tap one into each of the oil towers. They're tapered and, at their widest, are a good interference fit. I tapped mine to screw in set screws, but I had my engine out. This is a great way to plug 'em with the engine in the bay and without worrying about getting metal shavings in the engine.
 
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iamdub

iamdub

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McMaster has such great stuff. But I think we need @iamdub to provide the exact dimensions of the holes in the AFM towers; surely he documented those?

I couldn't get exact dimensions since it's rough cast iron. However, when I went to drill it with a 5/16" bit to tap them for the 3/8"-16 set screws, it felt like the bit was just knocking down some of the rough surface and milling the inside of the hole smooth. It had a small amount of drag but wasn't loose. So, I'd say the holes are 5/16" (or 8mm) diameter.
 

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