Aidan's loose oily bunghole actually runs a track lap
I am going to introduce you two to the correct tool for this job. A step bit. I would have been done with enlarging that hole days ago.
I have a feeling he's trying to get more than 1/4" depth on that "step" 
Like, he's literally drilling out the entire fitting to a larger ID, while in situ. Sounds like a terrible job.

Like, he's literally drilling out the entire fitting to a larger ID, while in situ. Sounds like a terrible job.
Joined: Sep 2012
Posts: 4,560
Total Cats: 1,143
From: your mom's house phoenix, AZ
I was originally going to just cut down a step drill for him like ive done in the past, but there was concern with wandering and not drilling straight. Since Aidan is pushing the limits of science, metallurgy, and physics (aka- thin wall on the AN fitting), we wanted a pilot. Then realizing a major side benefit of the pilot is keeping chips out of the pan. Twas an easy decision to make a custom bit. Its not like I have time for this ****, so it wasn't really to just play with the lathe. I have bushings to make.
Thread Starter
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
I think that's the longest I've gone without working on the Miata in over a year...instead I worked on 2 bikes, another Miata, and a truck.
oil bung is drilled out, pan is flushed with mineral spirits. Going to let it air out for a while then reassemble.
Track day on Thursday, which is good, haven't been on the track since June. Am probably rusty.
oil bung is drilled out, pan is flushed with mineral spirits. Going to let it air out for a while then reassemble.Track day on Thursday, which is good, haven't been on the track since June. Am probably rusty.
I am going to mount mine directly to the valve cover with a large bore restrictor from the VVT actuator housing. The drain fitting is a bit of a pickle though. I have not been able to locate a -4an orb male to straight NPT male.








