Thread: HOW TO: Drill and tap your block for the turbo oil drainage

Make this easy on yourself and go ahead and pull the radiator out. After you do that, drop your exhaust that runs under the oil pan. In my case I still have the stock header on here.



Make sure you put a new oil filter on since you are in essence doing an oil change through this process:



Go ahead and drain the oil:



At this point, you should have pretty good access to this guy here:



Drop your crossmember to gain access to some of the bolts that would otherwise be covered up:



All the way out:



Remove the 2 10mm bolts that hold the cover on this access panel:



This is the combination of sockets/swivels that I used to get the 2 10mm nuts free.



Pull all the bolts out of the lower oil pan and then separate it from the upper pan with a paint scraper:



Remove all the bolts holding in the windage? tray:



Should leave you with this:



These are all the bolts in order of removal of the upper oil pan for reference with the exception of one. It was in the back corner. Don't forget that one. You have to use a wrench to get it. A socket won't cut it:



Don't forget to undo these two from the upper pan:





Use the two transmission bolts that you removed from the upper pan to break the seal:



Drill your pilot hole. Make sure you aim high enough to miss your oil pan mating surface!!!



Use your 45/64" drill bit to finalize the hole:



This is how the bottom should look when done. See how I missed the mating surface?



Go ahead and tap the hole and screw your fitting in!



Installation is exactly the reverse from how you took it out.

where did you get that fitting?

You can get it in the Racing aisle at Home Depot.

C

you being serious?

Absolutely. Some people call it the plumbing section, but we know better.

C

ahaha shut up, I'm such a noob still, I have a lot to learn still!

Drilling oil return... - SR20 Forum

C

I really should start going on the other forum

But there is only one forum

Good writeup, the only thing I'd add to use some cutting oil to keep your drill bits and tap in tip top shape.

Another trick I've learned is you can spear the tap with thick grease, and the shavings the tap make will stick to the tap. Doing that in this particular case is mostly useless, as you've just drilled a big old hole in the side of the block and got shavings all over already.

That particular fitting came from ATPTurbo.com

Drain Fitting - 5/8" Slip-On Hose : atpturbo.com

I didn't want a zillion barbs on the fitting so I went with this one, but like Chris said, you can find a slightly different version in the plumbing section at Home Depot/Lowes.