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Old 11-10-2001, 01:57 PM   #1
Eric SS
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swap and N20. gone. : (

Default What size is that engine plug near the oil filter?

There is a big engine plug right next to the oil filter on our engines. Anyone know what size allen wrench it takes??? 12mm is to small and 14mm is to big but they don;t make a 13mm allen. I tried snap-on, Craftsman, and husky. none of them make one. it jumps from 12mm to 14mm to 17mm. I can't imagine that it is english. Called Subaru and they don't have a special tool for it.

Eric
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Old 11-10-2001, 02:28 PM   #2
yamarocket630
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Why do you want to remove it?
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Old 11-10-2001, 03:07 PM   #3
Eric SS
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I need to get it off my EJ25 and put it into my EJ22T. I'm ready to start the car if it weren;t for that stupid plug!

Eric
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Old 11-10-2001, 04:50 PM   #4
ylexot
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I wouldn't think it would be English either, but it can't hurt to try.

BTW - 13mm = 0.5118in which is pretty darn close to 1/2"
That's probably why 13mm isn't sold in the US
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Old 11-11-2001, 12:10 AM   #5
cvalle-sd
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Isn't that a drain plug for coolant from the block?
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Old 11-11-2001, 12:34 AM   #6
Impreza Rider
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Quote:
Originally posted by cvalle-sd
Isn't that a drain plug for coolant from the block?
Negative. It is a oil plug. There are two of them on the front of the block.

It is a 13mm. You can find one, but the only reason that I was able to get one that fit is because we had one at the bike shop that I work at.

If it helps, the thread inside is the exact same as the oil pan plug.
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Old 11-11-2001, 10:39 AM   #7
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If all else fails, find and American car with any 13mm head bolt, and locktight two nuts jammed together on it. Then use a wrench or socket on the nuts. Unless the plug is @!#%% tight, it should come out this way. (old mechanic's trick when you can't find the right size allen wrench or socket)
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Old 11-11-2001, 12:29 PM   #8
Eric SS
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Quote:
Originally posted by Impreza Rider


Negative. It is a oil plug. There are two of them on the front of the block.

It is a 13mm. You can find one, but the only reason that I was able to get one that fit is because we had one at the bike shop that I work at.

If it helps, the thread inside is the exact same as the oil pan plug.
Actually, it is a drain plug for the water. I'm talking about the one on the BOTTOM of the block, not the 2 on the front.

I ended up buying a 1/2" Allen wrench and it is a touch small. I stripped the bottom plug. luckily, one of the oil plugs on the front of the motor was the same size and not as tight so I barley managed to get that one off. Car runs awesome!

Eric
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Old 11-11-2001, 12:56 PM   #9
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ok...I know which one you were talking about now. Don't pay any attention to me
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Old 11-11-2001, 09:42 PM   #10
Peaty
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from here:

http://www.scoobymods.com/mods/impreza/oilcooler.php



14mm there is such a thing, I got one...

Peaty
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Old 11-11-2001, 11:49 PM   #11
Eric SS
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I have a 14mm also. Trust me, it does not fit the plug I needed.

Eric
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Old 11-12-2001, 10:52 AM   #12
cvalle-sd
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So what is the official procedure for draining amd refilling the coolant?
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Old 11-12-2001, 11:20 AM   #13
Peaty
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Before I got the proper allen wrench I tried the bolt with 2 nuts and some loc-tight trick. The nuts still turned. I ended up using a stud remover tool on the end of the bolt threads w/ the head in the plug, this on the end of a 24" breaker bar. Major pain. Of course when it finally did let loose I whacked my hand pretty bad.

Peaty
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Old 11-12-2001, 05:05 PM   #14
Silver2000RS
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I agree with Peaty. The coolant drain plug is 14mm (9/16" will also work). Was your plug clean? Maybe you had some gunk in the plug that prevented the 14mm wrench from fitting.

I had to remove the plug on the driver's side for the block heater. I tried finding a 14mm allen wrench but failed. I also tried welding a nut and bolt (grade 8) together but the bolt sheared.

Finally, I drove to CarX and they had a 14mm allen 'L' wrench. Their strongest mechanic finally got it loose. (I though he was going to pop a vein in his neck. ) They only charged me $10 to loosen the plug.

I drove home and drained the coolant and installed the block heater myself. (My local Sube dealer wanted $80 for the full job!)
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Old 11-12-2001, 05:22 PM   #15
Peaty
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I ended up getting a 14 mm allen for just under 3 bucks from a tool supplier on the web. I didn't really need it because I finished installing the oil cooler. But since I spent so much time trying to locate one locally it was the principle of the thing. I forget exactly where but I think I have the URL at home. The wrench needed for each drain plug (right and left) is the same but the plugs themselves are diffent sizes. The drivers side one, the one for the block heater, is smaller for some reason. My wife's OB limited came with the heater but we've never used it.
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