Where the christ do I find a 37/64" drill bit?
 

I've been to Sears, Lowes, HD, and HF and all of their bits top out at 1/2". Even a 9/16 would be fine but nobody has a damn thing bigger than 1/2 except in masonry bits. I don't want to order one, I want this shit done now.

uhm. 37/64?
I'm assuming (because of the section you posted this in) that you're looking for a bit for your 1/2 NPT turbo oil drain? You can find 11/16" easily.

not a crappy hardware store.mcmaster.com

cost you bout 20 bucks though. and you probably need a drill it'll fit in since most only go either to 3/8 or 1/2" max.

I have one you can borrow, complete with pilot bit and tap.

y8s is right, you will need a 1/2 inch chuck on whatever drill you use.

37/64 is for 3/8 NPT

Napa has em along with the 3/8 tap.

One option would be to open the yellow pages to "Tools", "Tool & Die", "Tools, Machine", etc and start making phone calls.

Another would be to visit the Grainger nearest you. They have a 37/64 bit with a 1/2" shank, Westward brand, number 4UM63 on page 3050 for $12.98: http://www.grainger.com/Grainger/items/4UM63

A third would be Enco. They've got 'em for $6.49: http://www.use-enco.com/CGI/INSRIT?P...PARTPG=INLMK32
I use Enco a lot for this sort of thing, as they've got an awesome search engine.



That said, you don't have to be amazingly precise. When I drilled my pan for 3/8" NPT, I used the 9/16" section of a Uni-Bit (step-drill). This had the advantage of being shorter, easier to pilot and center without chatter, and it fit in the chuck of my hand drill.

37/64 is 0.578125, whereas 9/16 is 0.5625, a difference of .015"- one and a half one-hundreths of an inch. Trust me, the difference is utterly meaningless.

If you use a Uni-bit, just be awesomely careful about not hitting the oil pickup. I scraped the side of mine but didn't penetrate. If I'd have been 1mm further to the right, I'd have had to pull the engine.

ACE hardware

Yeah, it's for a 3/8 NPT. It's actually for a Greddy, but DIYers are more apt to drill their pans :)

I was going to use a step drill, but drilling that far into the pan scares me so forget that. I do have a Grainger nearby and a 1/2" chuck on my 18v Makita. Like I said, I haven't been able find a 9/16 either, as that's bigger than 1/2" and that's what the stores seemed to go up to. Hopefully the ones at Grainger have a 1/2" collar.

Find a local "production tool supply" in your area. They carry drills in every conceivable size and will sell to individuals unlike grainger.

Places like Grainger and Fastenal usually have no problem selling to individuals if you tell them you work for some manufacturing company and you're doing a "side job" and need to make a small order. It's all about social engineering :)

9/16 would work. its only .016" smaller. most drills will runout that much

Like I said, 9/16 has been just as hard to find as 37/64. :)

As I said, open the phone book and start calling tool stores. You're not gonna find it at the "regular" hardware store- you need the sort of place that's in a little strip mall or industrial park and has faded Dewalt and Porter-Cable signs out front.

I used to live in Mason, and I know for a fact that there are tool stores in Blue Ash, Glendale, Montgomery, etc etc (not to mention all over Butler County, Covington, and so on) that carry drills and taps in the size you need.

I started calling tool stores yesterday, they all want like $20 for them. Grainger will do what's called an "accommodation sale" which means just go to the counter and pay cash, no account required. Gonna head over there in a bit.

Edit: Also found a nicer oil pan fitting at NAPA in their "help" section based on the recommendation from one of the posts in this forum, it has the flared end rather than the barbed end like the ones you get at Ace.

Reporting back from Grainger. They refused to sell to me at the counter until I dropped the magic word - "Accommodation sale". Sooo... If anyone wants to shop at Grainger tell them they told you on the phone you can do an accommodation sale, and you'll be gold.

Drilling the pan tomorrow, hopefully I don't fuck it up.

that's weird. the one time i went to a grainger, they didn't make me do anything weird.

If you saw my thread about the oil pan, just go right next to where I drilled and tapped mine and you'll be good. My hands decided to fuck me and made me drill the hole about 1 inch too far back. :vash:

I used a 9/16 drill bit and a 3/8 tap. Total cost for both was like $18.

Vash-