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Old 07-13-2006, 01:34 AM   #1
ImprezaRSfan!
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Default high-reving built 2.0L

Anyone out there have a built 2.0L wrx or ej207 reving to 9k with a gt35r or such turbo? Does the oil system become a problem at a certain rpm? Ive thought a couple of times of putting in 272 avcs cams and springs/retainers in my ej207 and revving to 9k with my gt35r but im sure theres more variables than simple putting those parts in. Anyone have any ideas, thoughts, or usefull info ?
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Old 07-13-2006, 02:13 AM   #2
senortighto
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jun oil pump for oiling
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Old 07-13-2006, 10:27 AM   #3
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A dry sump system would work great for that application. As long as the rest of the motor was up to it (not just the valvetrain).
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Old 07-13-2006, 10:35 AM   #4
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cosworth oil pump for oiling. Thats what I had to install in order to do it safely, and I use 264/272 cams, I have upgraded valve train and my goal is to rev to 9k
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Old 07-13-2006, 11:07 AM   #5
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With an ej207... doesn't seem like much has to be done since it can rev over 8k regularly anyway. For oil pumps, cosworth or jun would be easy but having someone like Axis shim the pump is the same thing, and probably cheaper. Nice insurance would be to have the bottom end rebalanced and of course an upgraded valvetrain.
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Old 07-13-2006, 12:07 PM   #6
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interesting. So who makes spring/retainers for the ej207? I bet the jun and cosworth oil pump are expensive.

i wonder how high we could rev with just an upgraded oil pump on stock ej207 valvetrain. I remember reading ppl would go up to 8500 or so.
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Old 07-13-2006, 12:09 PM   #7
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I believe the JUN pump was like $800 or something like that.
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Old 07-13-2006, 12:34 PM   #8
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Quote:
Originally Posted by wrxfactor
I believe the JUN pump was like $800 or something like that.
Holy **** $800 for a shimmed oil pump.
Why not just use an EJ22T oil pump and reshim it?
Is that Jun one made of gold?

TMS
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Old 07-13-2006, 12:45 PM   #9
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I think the cosworth one is a reworked OEM one that flows more where the jun actually increases pressure(I think I read by 25%?). supertech makes a valvetrain kit for out cars as well as dpr and crower
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Old 07-13-2006, 12:46 PM   #10
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Quote:
Originally Posted by vlady
A dry sump system would work great for that application. As long as the rest of the motor was up to it (not just the valvetrain).
anyone have a decently affordable dry sump that doesn't cost the price of a complete jdm v7+ motor?
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Old 07-13-2006, 12:47 PM   #11
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Quote:
Originally Posted by petawabit
I think the cosworth one is a reworked OEM one that flows more where the jun actually increases pressure(I think I read by 25%?). supertech makes a valvetrain kit for out cars as well as dpr and crower
The EJ22T oil pump flow more than the other EJ pumps as it has the oil squirters. By reshimming the pump you increase the pressure.

TMS
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Old 07-13-2006, 12:50 PM   #12
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How many shims should one be using?
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Old 07-13-2006, 12:52 PM   #13
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Quote:
Originally Posted by petawabit
How many shims should one be using?
The person to really ask would be Ron over at axis.
I just installed one of his modified EJ22 pumps. I think people are adding 1 more shim to it.

TMS
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Old 07-13-2006, 01:14 PM   #14
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Like I said, simple solution is buying the Cosworth for $240. It's just reshimmed already if you want no downtime.
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Old 07-13-2006, 01:15 PM   #15
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Quote:
Originally Posted by ImprezaRSfan!
interesting. So who makes spring/retainers for the ej207? I bet the jun and cosworth oil pump are expensive.

i wonder how high we could rev with just an upgraded oil pump on stock ej207 valvetrain. I remember reading ppl would go up to 8500 or so.
I know 1 person locally that has taken it to 8600 on several occassions, basically beats the piss out of the car. Motor is still running, compression and leakdown are good. Obviously it's not recommended but this is a bone stock v7 ra-c.
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Old 07-13-2006, 04:31 PM   #16
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kinda of a dumb question but would you rather drop in a ej207, usdm ej25, or a ej22t? thinking about swapping and making some decent power, just looking for a strong block to start with.
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Old 07-13-2006, 10:08 PM   #17
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The thought had crossed my mind as well but i didn't for a couple reasons.
-Even with cams i think you'd need headwork to fully realize the gains
-I was skeptical about opening the motor up...there is alot to be said about OEM reliability and build quality imo.

As far as i saw it, the costs to do what i'd like to do right, made it not worthwhile anymore. If the motor was blown or had some spare heads to work on i'd have given it more consideration. The main downside to me was that for anything that wasn't a dedicated track car it wasn't worth it to me. Doesn't mean it won't be to you, just some food for thought.

IMO if you're going to build a motor, build it as a race motor all the way and treat it as such. Although i'm a proponent of adding forged pistons to an ej257 whilst leaving the rest of the longblock untouched.

Hope this helps.
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Old 07-14-2006, 12:14 AM   #18
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If I did it all over, I'd learn from people on nasioc and get an ej207 (ra spec c) and be done with it. OEM fit and finish are TOUGH to beat.
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Old 07-14-2006, 10:01 PM   #19
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how hard is it to get one of those to work in a 02 wrx with avcs?
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Old 07-15-2006, 02:38 AM   #20
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for the record, the jun pump isn't a shimmed oem pump, it is a new piece that flows 20% more than stock, and not just higher oil pressure. definitely a step above the cosworth pump which is just ported and polished a bit.
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Old 07-16-2006, 12:57 AM   #21
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Quote:
Originally Posted by senortighto
for the record, the jun pump isn't a shimmed oem pump, it is a new piece that flows 20% more than stock, and not just higher oil pressure. definitely a step above the cosworth pump which is just ported and polished a bit.
The only way I'd throw out the $800 or so for the JUN pump was if I didn't give a **** because I was rich, or if I was building a motor to redline at 10k.
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