FluffyHusky

I am tearing apart a 96 engine for machining and I am wondering how you get the oil control orifice out of the deck surface.

LeoNA

I usually drill and tap them. Then use a screw and small piece of tubing to pull them out. I have to do one in a few days I will post some pics.

FluffyHusky

thank you, what size tap do you use

LeoNA

I use a M3X.5, or 5-40 which requires no drilling. These are relatively small so use care when tapping and removing. I prefer to use a steel socket head (allen head) screw and not stainless steel. If you don't mind drilling it out, you can use a #29 drill and an 8-32 tap/screw which is much more substantial.

FluffyHusky

would you recommend the 8-32 over just tapping? And is there anything to worry about when drilling into it

LeoNA

They are in fairly tight. Make sure you use to washers on the top and the sleeve/tubing is fairly square on both ends. The small screw has concerned me of breaking off. It has not happened to me before, and the screw would be easy to drill out. Now the tap would be difficult to remove. Just use a new steel tap, not a cast steel tap hardware store and use some oil. The only reason I don't drill anymore is to save some time.

FluffyHusky

how long of a bolt/screw are you using and where would I be able to find one

LeoNA

The allen screws can be purchased at a hardware store. 25-30mm (1-1.25”) long is adequate.