I wanna say 1/2 npt or 5/8 npt, You don't want to go any bigger than that because the oil pan is really thin. I also put a ton of rtv on the threads and it hasn't leaked at all

 

I'll look in my garage and see if I can find the tap I used and drill. I can't really remember lol

 

Thanks for answering all of these questions. I've read so many threads in an attempt to make sure I have a 99.99% understanding on everything before diving in, so these are just some of the things that needed a little more clarification.

This is what I ended up ordering per Green_Bandit's thread. Hopefully it will work..
http://www.ebay.com/itm/350798722945?_trksid=p2060778.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
I think he may have meant something like this, so I hope I didn't screw that up.
http://www.treadstoneperformance.com...8900-large.jpg

 

Would it be too much to ask if you could maybe snap a quick picture of where you tapped the oil pan? I know I drop the oil pan but I've read that you don't tap the black part of the oil pan but the silver instead. Just need clarification so I can let my welder know where the fitting is going.

 

Yeah I can tomorrow if you want.. What they mean is, you have 2 pans, one is where the oil drain plug is at. I believe that's black. Then you have the larger pan which is above the crossmember.

 

Yeah, that would be nice. That visual confirmation will really help. Haha.

 

so evo x injectors are compatiable with 4g94 fuel rails? because im having a hard time trying to find prices on 02 wrx injectors.

 

Not sure on that. But the evo 8 and 9 should work I think they were 560cc I created a wtb on the subie forum and got a set for 100 bucks in like a wk. then I ordered o-rings from jscspeed.com

 

This is looking straight up from under the car. Head facing the motor and feet at exhaust



This is looking straight back from the front of the car. See the downpipe to the left

 

http://www.jscspeed.com/catalog/Suba...u_WRX_STI.html

If you want to buy a bigger than 440 and flow tested already.
But just go to the subie forum 1st and try to get used ones. You need top fed. Also try your luck on here for evo injectors. If you get used, try to get ones that weren't modified so you know what you got for sure

 

Thanks! This should help a lot. I have an extra motor so I was just going to drill that pan and swap it when I'm ready to assemble everything. You rock.

 

I've also read about someone having a set of those, but its pretty easy to find the 440's on Subie forums. I just got a set for $45 shipped. Just make an account and scavenge their FS forums.

 

Not a problem

 

alright whats the best subie fourm to go to?

 

It all depends on how many you know of. Haha. The only one I have ever heard of is NASIOC. It takes a second to sign up but as soon as you hit the for sale threads you're bound to find a set within the first couple postings. Just make sure they're exactly what you're looking for and the price is reasonable. Like I said, I got mine for $45 after a little haggling. The guy was even nice enough to send a bag of new o-rings with them.