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Old 06-03-2009, 02:34 PM   #426
awdboostftw
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Ok, thanks that's pretty strong for a stock motor. So would the USDM 2.5 heads be unsafe or just not optimal?
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Old 06-03-2009, 02:44 PM   #427
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You wont make that power with the 2.5 heads.. Not even close.. I was talking about the V8 long block. The biggest feature of this engine is the AVCS intake cam system. Thats not going to be functional for you

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Old 06-03-2009, 02:50 PM   #428
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Ok cool so it's more of a flow issue than safety of the motor. The guy I'm talking to said that the AVCS does work because he has the jdm wiring harness along with the jdm ecu. Is this possible? Sorry if these are n00b questions, I am much more familiar with honda motors and frankenstein swaps than I am with subaru motors.


Thanks again for the responses
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Old 06-03-2009, 03:25 PM   #429
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No.. You cant run 05 STI heads/cams with the JDM ECU. THe Hall effect sensors that pick up the rotation of the cams will not read. It will wire in but the cam system will not work.

Clark
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Old 06-03-2009, 05:02 PM   #430
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awesome. thanks for the replies

I'll post up if I have any more questions.
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Old 06-06-2009, 03:01 AM   #431
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am I able to use the USDM STI timing belt, tensioners and pulleys on my EJ207? are the cam sprockets the same as the USDM? I know that my crank pulley isn't the same (the holes that are on the JDM crank pulley aren't in the same location as the USDM).

What gasket kit P/N do I need? does anyone have the JDM part number and where I can get the JDM gasket set at? Are the timing belt guides on the inner covers the same as well?
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Old 06-06-2009, 11:31 AM   #432
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No.. You can use the EJ205 belt, lower pulleys and tensioner. The Top intake cam sprockets are special and need to be the correct JDM part.

Rallispec can get you the gaskets. Not sure on the Guides..I think they are the EJ205 parts. I would order the cosworth belt guide while you are at it. Its cheap and solves the problem.

Clark
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Old 06-06-2009, 10:23 PM   #433
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Like Clark said the usable parts are ej205 including the crank pulley...I use a perrin ej205 pulley on mine.

Trey
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Old 06-08-2009, 12:23 AM   #434
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Glad i read this thread. I was about to rip the bottom end of my stock EJ207 (01 bugeye sti) and replace it with a RAW block. But its seems hybrids are iffy at best (hit or miss) I have always maintained (like clark said) that the GT3076R w/ .82 ar hotside is THE best 2L turbo in most any car. the end.

My only problem is that im getting some detonation on hard pulls. A tune might do the tick but I wanna take the block apart and refresh it. Do i plug back in all stock parts? Do I use aftermarket equivalents? If so who are the usual suspects? Im talking about rods and pistons here.

And finally, my #1 issue with the EJ207 is the lack of plug and play engine management (Cobb for example) Whats considered the go-to EMS for the EJ207? EcuTek is the best ive come up with so far. Thanks for helpful suggestions.
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Old 06-08-2009, 12:27 AM   #435
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around here open source it great if you have someone to tune it. allows you to tune any and everything
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Old 06-08-2009, 01:12 AM   #436
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When I tune the JDM engines its normaly Open source. Cobb does have the JDM Accessport but its not released in the US. I wish it was..

Clark
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Old 06-08-2009, 02:07 AM   #437
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Quote:
Originally Posted by Clark Turner View Post
When I tune the JDM engines its normaly Open source. Cobb does have the JDM Accessport but its not released in the US. I wish it was..

Clark
Based on your statement, have you found it difficult to work with 207 swaps using the Delta-001 UTEC? I plan to use it for my car but am unsure still which direction EM to run with.

Roughly my setup will be to run my V8 207 with vf37 setup, GM BCS, HSF5 meth, 3" MRT catted downpipe and midpipe, Blitz Touring axleback, possibly an electronic cutout, and possibly E85. With all this in mind it seems what would be best candidate to tune and map switch easily? Thanks in advance for your time.

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Old 06-08-2009, 03:55 AM   #438
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Quote:
Originally Posted by Clark Turner View Post
No.. You can use the EJ205 belt, lower pulleys and tensioner. The Top intake cam sprockets are special and need to be the correct JDM part.

Rallispec can get you the gaskets. Not sure on the Guides..I think they are the EJ205 parts. I would order the cosworth belt guide while you are at it. Its cheap and solves the problem.

Clark
Thanks, I thought so but wasn't entirely sure.

I <3 my EJ207 + GT3071R
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Old 06-08-2009, 11:21 AM   #439
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I have been tuning the utec since 2003 on the JDM 207 engine. I have one in my personal car for the last 6 years. It will work fine but might not be needed on such a simple setup. If you need help with it. Let me know

Clark
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Old 06-08-2009, 02:09 PM   #440
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Quote:
Originally Posted by Clark Turner View Post
I have been tuning the utec since 2003 on the JDM 207 engine. I have one in my personal car for the last 6 years. It will work fine but might not be needed on such a simple setup. If you need help with it. Let me know

Clark
Thanks again for your quick reply. I tried to PM you about this but I can't seem to do so. If you can give me some info where I can contact you at that would be great. Thanks

- Arco
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Old 06-08-2009, 04:18 PM   #441
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Subscribing, since I will most probably be looking for a V8 Spec C EJ207 for a future swap.
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Old 06-09-2009, 12:09 AM   #442
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My email is Clark at Clarkturner dot com

I dont use PM'S

Clark
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Old 06-09-2009, 12:53 AM   #443
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Aight, noob question. My 02 rex is getting up there, I would like to stay 2.0 but keep my heads, ecu, etc. Can I simply swap in a ej207 shortblock?
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Old 06-09-2009, 01:33 AM   #444
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Originally Posted by rexblake View Post
Aight, noob question. My 02 rex is getting up there, I would like to stay 2.0 but keep my heads, ecu, etc. Can I simply swap in a ej207 shortblock?
As far as I can tell, yes. You won't be able to rev it to a billion RPM because your heads will hold you back somewhat, but heads can be built.
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Old 06-09-2009, 01:15 PM   #445
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Quote:
Originally Posted by treystoys View Post
Like Clark said the usable parts are ej205 including the crank pulley...I use a perrin ej205 pulley on mine.

Trey
Good to know, I wasn't going to swap my Perrin pulley over, but if you have been using it with no ill effects then I guess I will.

Also, what are the V8 guys using for plugs/gaps and which oils seem to work well for these engines?
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Old 06-09-2009, 06:07 PM   #446
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No ill effects at all with the pulley. Been on it since I did the swap...probably about 4-5000 miles now. Also have been on the same hks plugs that were in the motor when I got it. But plan to switch to the ngk one step colder plugs for the ej205 soon...probably run about 22-24 thousanths gap. Oil has been castrol semi-senthetic 5w-30 no oil consumption at all, just change the oil somewhere between 2 and 3k mile intervals probably even 2k or less, cause I can recall 3 changes already within the above used milage...I don't put very many miles on the car yearly.

Trey
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Old 06-09-2009, 06:37 PM   #447
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Quote:
Originally Posted by treystoys View Post
No ill effects at all with the pulley. Been on it since I did the swap...probably about 4-5000 miles now. Also have been on the same hks plugs that were in the motor when I got it. But plan to switch to the ngk one step colder plugs for the ej205 soon...probably run about 22-24 thousanths gap. Oil has been castrol semi-senthetic 5w-30 no oil consumption at all, just change the oil somewhere between 2 and 3k mile intervals probably even 2k or less, cause I can recall 3 changes already within the above used milage...I don't put very many miles on the car yearly.

Trey
What are you using to tune the car with?
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Old 06-10-2009, 10:17 AM   #448
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stock ej207 plugs are ngk 7 heat range, so if your going colder use the bkr8eix you just have to look for them or order the sti 8 heat range plugs $$$ im currently running bkr8eix and 16g but im about to go to td05 20g i just have to machine the CHRA to put the 20g wheel on.
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Old 06-10-2009, 08:19 PM   #449
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I tuned the car with open ecu. Good results...car has run well into the 11s on 93 octane, without any additives...meth nitrous or race fuel.

Trey
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Old 06-16-2009, 01:03 AM   #450
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Quote:
Originally Posted by theghostwrx View Post
i have a 04 wrx with a v7 sti spec-c ra motor with the 5spd man ra gears limited slip front and rear i made 340/325 at 19 psi on good 93 pump. i have a big 16g evo III turbo with 565 sti pinks. my question is i would like to get close to 400/350 how would i go about doing that all advice would be awesome thanks
What sort of numbers are you putting down with this setup? When do you hit full boost? Until what rpm does it pull?

I am looking to upgrade the vf30 on my v7 to either an 18G or a EvoIII 16g, but having trouble deciding between the two. Right now I am leaning towards the 18g but I am thinking that the quick spooling big 16G might be a more fun setup for the street, since I am more concerned with having a more practical/ usable on the street (I know this term is veeery relative ) powerband, that has significantly more punch than my current setup but without added lag. However I am concerned that I wont be getting as much uptop, and that it might be an undersized turbo for this engine.

Another option to consider is the 68HTA, but for now the results are somewhat mixed, and I am not yet sure what to think of this turbo. If the spool is actually close to the 16g then it seems like a very good choice for my needs, but then some tests show it takes longer to spool than the 18g, and considering that a used 18g can be had for less... it's hard to decide...

The car is running on 94 octane and will be tuned using EcuTek with a more or less conservative tune, with under 21psi of boost, to keep things smooth and reliable.

Any suggestions will be much appreciated.
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