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Old 04-29-2004, 11:02 AM   #1
benjaminetanyahoo
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Default Shortblocks

Quick question for all you ej22t guys, if you purchase a new shortblock from the dealership, do the oil pump and water pump come installed on the block already or need to be installed? Just making sure 1000%. Thanks
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Old 04-29-2004, 12:56 PM   #2
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shortblock=no accessories
u have to supply them
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Old 04-29-2004, 07:07 PM   #3
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does a stock RS oil pump even fit a ej22t shortlbock?
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Old 04-29-2004, 07:10 PM   #4
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from what ive read your supposed to use a wrx or a legacy turbo oil pump because of the oil squirters in the ej22t block. so even if the ej25 pump fits up it might not have the capacity for the block.
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Old 04-29-2004, 07:13 PM   #5
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RS oil pump fits, but use the EJ22T one.
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Old 04-29-2004, 07:24 PM   #6
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I have been trying to find a picture of the RS pump, do they look the same, with the two nipples on the end when you look from the bottom?
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Old 04-29-2004, 07:30 PM   #7
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They look the same, but they're keyed different when you put them on the crank. That was the only noticable difference from the outside.
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Old 04-29-2004, 07:32 PM   #8
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damn it, I might as well change it to be 1000% sure when I do the WRX water pump, damn the man
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Old 04-29-2004, 07:36 PM   #9
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You'll be better off trust me. The EJ22T, from what mark has said is the higher pressure oil pump of the WRX, RS and EJ22T. Has something to do with shims or something like that.
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Old 04-29-2004, 07:38 PM   #10
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I just don't feel like doing all that labor, maybe I'll pay somebody to do it and be a lazy ass, yeah if it is a stock RS pump in there now, I am getting away with it because of the low boost I am running but I plan on turning it up in a couple of months with stand alone so I figure do it right. We will see
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Old 04-29-2004, 07:44 PM   #11
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If you're doing the water pump already it's like an hour more work since you have the timing belt off already. If you do it make sure to buy a new oil pump seal as well. I didn't and had to have MPJ fix my damn oil leak.
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Old 04-29-2004, 07:50 PM   #12
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how much you think it would run to do that if I get lazy and have somebody do it? couple of hundred huh?
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Old 04-29-2004, 07:53 PM   #13
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Yep, somewhere around that. It's a little time cosuming with the timing belt and the sealent has to dry overnight too.

Quote:
Originally posted by FutureSTIer
how much you think it would run to do that if I get lazy and have somebody do it? couple of hundred huh?
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Old 04-29-2004, 07:56 PM   #14
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maybe I will go that route because then if it leaks I will bring it back and make them fix it again rather me do it all over again. Found a picture of a RS pump looks like the same damn thing, need to do some more investigating, but I know the part numbers are different
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Old 04-29-2004, 08:05 PM   #15
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the WRX water pump has four outlets, I take it the one for the engine oil cooler needs to be clogged unless you have that setup?
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Old 04-29-2004, 08:11 PM   #16
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Either run an oil cooler or loop the extra two outlets like me. You could weld them closed too.

Quote:
Originally posted by FutureSTIer
the WRX water pump has four outlets, I take it the one for the engine oil cooler needs to be clogged unless you have that setup?
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Old 04-29-2004, 08:18 PM   #17
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Quote:
Originally posted by FutureSTIer
maybe I will go that route because then if it leaks I will bring it back and make them fix it again rather me do it all over again. Found a picture of a RS pump looks like the same damn thing, need to do some more investigating, but I know the part numbers are different
Ya, I wouldnt worry about the water pump unless you were going to run a oil cooler like the wrx has. But the oil pump is a must some RS and the turbo legs had a shim in them that ups the pressure. A must for thoes squirters...
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Old 04-29-2004, 10:42 PM   #18
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good feedback guy, but my thinking is, if I got the timing belt off why not do both for piece of mind?
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Old 04-29-2004, 10:42 PM   #19
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I didn't know the WRXs came with oil coolers?? Not even the STi's.
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Old 04-29-2004, 10:54 PM   #20
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Yeah they do apparently because I got that subscription to Subaru Technical and WRXes have em, actually in all reality WRX Oil Pump and Legacy Oil Pump are the same part number meaning.... same part is what I intepret

Last edited by FutureSTIer; 04-29-2004 at 11:01 PM.
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Old 04-29-2004, 11:51 PM   #21
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Quote:
Originally posted by FutureSTIer
Yeah they do apparently because I got that subscription to Subaru Technical and WRXes have em, actually in all reality WRX Oil Pump and Legacy Oil Pump are the same part number meaning.... same part is what I intepret
If you search for xephyr like in this thread he talks about how the pumps are different... in one he talks about how you can see them, but I dont remember where.
http://forums.nasioc.com/forums/show...0&pagenumber=2
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Old 04-30-2004, 12:45 AM   #22
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wow great stuff, guess that is settled. totoherbs is like the search wizard and to think I was great at data mining using google. NASIOC search king totoherbs, thanks man
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Old 04-30-2004, 01:21 AM   #23
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Quote:
Originally posted by FutureSTIer
wow great stuff, guess that is settled. totoherbs is like the search wizard and to think I was great at data mining using google. NASIOC search king totoherbs, thanks man


I pulled that out of my favorites list, while the google ( site:forums.nasioc.com ) search kicks ass. I think its because after being her so long, and spending so much time on nabisco you just know what to look for. And working the sunrise shift opens up a lot of free time.
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Old 04-30-2004, 02:21 AM   #24
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I don't wanna see your favorites list because this isn't the first time you found a link for me, and it probably won't be the last. I hate the search feature on here to be completely honest. I work the sunrise shift as well, but I can only surf nabisco so long
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Old 05-03-2004, 02:58 PM   #25
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Difference between the two pumps is the thickness of the rotors. The 'lesser' versions have a thickness of 9mm, the high-flow versions have 10mm rotors, which explains the higher pressure and higher flow.

I have a friend who's running a MY98 EJ25 block / MY91 EJ20G DOHC heads hybrid with standard EJ20 SOHC oil pump. So far, he's done over 15,000 km but the standard internals of the EJ25 open deck engine do not feature the oil jets so it does not have the need for the high flow pump. Mind you, the car is capable of 0-100 km/h times of sub-6s and max out at 260 km/h at 6500 rpm in fifth.

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