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Old 08-22-2009, 01:36 AM   #526
mattyquinn22
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Quick question, I'm having Garage Tuning drop in a 207 V8 motor into my 99rs and it comes with a VF39, Will this turbo be a good one for a DD. I'm keeping my 5 speed for awhile too if that helps with your response. Thanks
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Old 08-22-2009, 06:06 AM   #527
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V8 comes with twinscroll turbo, EL manifold which are nice bits and perfect for DD, so you are missing out a lot of fun
plus VF39 are notorious for cracking
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Old 08-22-2009, 10:33 AM   #528
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Quote:
Originally Posted by ai42 View Post

Anyone know anything about this pulley (on the left). I was told this is from a JDM 2002 EJ207 Spec C Limited (ie No A/C). I was also told this is made of titanium however after feeling it it seems a bit too heavy to be titanium.
Hate to break it to you, but I have that engine. The "Limited" meant it HAD AC and a vf30 instead of the vf34. Mine has the standard pulley. I don't know if the regular Spec-C had that pulley or not, but all of the Subaru pulleys I've seen have been regular old OEM style.
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Old 08-22-2009, 11:30 AM   #529
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Just did the swap, and read few posts saying that bare minimum recommended gas is 94 octane -I am curently running on 91 octane.
Is the stock wrx fuel pump sufficient or upgrade is necessary?
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Old 08-22-2009, 11:32 AM   #530
ai42
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Quote:
Originally Posted by ej20ajk View Post
Just did the swap, and read few posts saying that bare minimum recommended gas is 94 octane -I am curently running on 91 octane.
Is the stock wrx fuel pump sufficient or upgrade is necessary?
Umm what? What does fuel pump have to do with octane? I think you need to do some reading.
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Old 08-22-2009, 11:51 AM   #531
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The WRX pump is not enough in my opinion. I would order a Walbro 255 pump now. On 91 octane you will be knocking on the JDM tune. You need to recalibrate the ECU for your mods and octane. I have files you can use. You will need a tactrix cable to flash the ECU.

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Old 08-22-2009, 06:29 PM   #532
ej20ajk
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Quote:
Umm what? What does fuel pump have to do with octane? I think you need to do some reading.
It was worded very poorly. Its actually two different statments which sort of tie in.

I am afraid that fuel starvation in higher RPM coupled with detonation from low octane fuel can lead to cathastrophic motor destruction, sooner then later.

Quote:
The WRX pump is not enough in my opinion. I would order a Walbro 255 pump now. On 91 octane you will be knocking on the JDM tune. You need to recalibrate the ECU for your mods and octane. I have files you can use. You will need a tactrix cable to flash the ECU.

Clark
I heard great things about your tunes. Only issue, is that my Tactrix cable is packed up for next 3 months in offsite storage, till I move into my new house. But definatly want to get it retuned for 91 octane, and higher boost.

Hence the question about the octane and pump being bare minimum.

-AJ
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Old 08-22-2009, 07:17 PM   #533
Clark Turner
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I understand. If there is anything I can do, Just let me know man.

Clark
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Old 08-23-2009, 04:26 PM   #534
mattyquinn22
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What does everyone here think about the Version 6 Sti 207 compared to a USDM Ej205? Any major benifits?
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Old 08-23-2009, 05:48 PM   #535
Clark Turner
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early V6 STI motors are small port. Still an upgrade. Later V6 motors are exactly the same as the V7s. Big port and more power.

Clark
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Old 08-23-2009, 09:41 PM   #536
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I thought the regular V7 had small ports and the V7 Spec C had the large ports? Are there different casting numbers or something so you can tell what you're buying?
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Old 08-23-2009, 09:43 PM   #537
Clark Turner
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Regular V7, 8 and 9 JDM STI all had large port heads.

The Aus and some other markets had the V7,8 and 9 with small ports.

JDM are big ports though.

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Old 08-23-2009, 11:10 PM   #538
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Does the V8 have any advantages over the V7 besides the twinscroll? Are the cams better or something?
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Old 08-23-2009, 11:18 PM   #539
Clark Turner
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Standard V8 JDM STI motors came with the same cams as the V7 Spec C. They also have Hyper cast pistons. later V8 STIs motors has Twin scroll. Early did not.

C
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Old 08-25-2009, 04:13 PM   #540
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I found a Version 3 front clip for 3700 and want to put it in my GC.

I will use this as my daily driver.

Is there any sort of tuning i can tune it to take 93 octane?

Is this a good engine? Will it be reliable and still make good power with the 93?

Or should i just save up and find a Version 4, 5, or 6?
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Old 08-25-2009, 06:02 PM   #541
RealDealTarheel
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The answers you seek are in the pre-2002 factory power train section. But the short answer is that is an EJ20K, it's a roll of the dice from what I've seen with those engines especially if your part of the country doesn't get 93 octane.
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Old 08-25-2009, 06:04 PM   #542
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Quote:
Originally Posted by RealDealTarheel View Post
V7 EJ207 owners:

I just picked up my Bug-eye STi and I'm not too far from installing some Defi's, Boost, EGT and Oil Pressure, I was curious what are the operating norms for this motor? The car had obviously been modified by the previous owner so I was hoping to get some insights as to what to look for as far as baseline numbers.
Anyone?
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Old 08-25-2009, 06:42 PM   #543
Clark Turner
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Skip the V3 motor.. Get a later V7 or V8 engine. Its much better and the ecu is tunable.

EJ207s will run 18 to 19 psi of boost factory in higher gears. EGT really depends on where the probe is.. But if its in the manifold 4 inches from the port, It should be around 850 to 900C on a long WOT pull. Oil pressure will depend on the oil used. 10W40 is what I run in these motors and that gets 20 to 25 psi at idle and 80 to 100 above 4000 rpm.

Clark
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Old 08-25-2009, 06:51 PM   #544
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Thanks for the info, I tapped the probe right in front of the factory 02 sensor on the drivers side exhaust manifold so I think that should buff out with what you just told me. Right now I'm running Amsoil 5w-30 but I think the next oil change I'm going back to M1 0w-40 or try out the Rotella-T 15W-40.
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Old 08-25-2009, 07:12 PM   #545
Clark Turner
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Dont put the 15W in that motor.. 10/30 or 10/40 is fine. You can run 5w oil in the winter if it gets cold where you live.

850 to 900C in the manifold is normal.

Cya

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Old 08-26-2009, 02:07 AM   #546
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Quote:
Originally Posted by Clark Turner View Post
Skip the V3 motor.. Get a later V7 or V8 engine. Its much better and the ecu is tunable.
That's what I heard. I doubt many tuners these days are using Hydra or anything like that.

I'm on a budget, I'm not planning to make a track beast or a dyno queen, but a reliable car.

I'm just wondering if I could run an earlier motor here reliably with a good tune to take 93 octane and maybe meth?
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Old 08-26-2009, 02:16 AM   #547
Clark Turner
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I ran a V7 Spec C motor for 12 months. I had a GT30R and FMIC on it. PE800CC injectors. It made 400whp on pump gas and I sprayed a 70 shot of nitrous on it. It ran better then I can describe.. Then I did donuts and slung the oil away from the pick up and toasted the Rod bearings. Before this stupid mistake, It was rock solid reliable.

Clark
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Old 08-26-2009, 12:16 PM   #548
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Quote:
Originally Posted by Da-Risin-Smoke View Post
That's what I heard. I doubt many tuners these days are using Hydra or anything like that.

I'm on a budget, I'm not planning to make a track beast or a dyno queen, but a reliable car.

I'm just wondering if I could run an earlier motor here reliably with a good tune to take 93 octane and maybe meth?
i havnt seen the Hyrda being run on the v3 platform but have seen a few older modded subarus run on SDS engine management.

If you're on a tight budget and are leaning to more a daily driver, a newer wrx swap might be more inline with your goals. Supportability ties into reliability when doing a swap.
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Old 08-26-2009, 07:59 PM   #549
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So an older STi motor isn't really worth it?

I've read a WRX swap into a GC is pretty hard compared to JDM.

What about a V5 or V6 are those good?
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Old 08-27-2009, 02:34 AM   #550
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for 3700 i really don't think its worth it. use that money and look around for a late big port version 7 or version 8. i went with a version 8.

as stated from others above, i believe that the internals are stronger on the version 7. they have forged internals versus the version 8 which is hyper cast. The hyper cast (still not sure if that's what it's called) is still still stronger than the stock usdm stuff we have. The version 8 has some nice accessories with it like the one piece tgv less manifold.
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