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Old 04-03-2013, 04:38 PM   #6201
lil'redwagon
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^that makes sense. and at this point i'm just curious because my car is running great, but did you have to do anything special to get the cams to log 45*? i'm programmed for 45*, but only go to 40*. and i've also definitely noticed a difference at 40* <3000 rpm. but have you, by chance noticed a difference between 40* and 45*?
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Old 04-03-2013, 05:11 PM   #6202
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Yes, I've noticed a difference betweeen 40 and 45 degrees. A few pages back I have a post when I first started getting AVCS working that shows a chart of boost vs. RPM vs. the old 18G setup on EJ205. With 45 degrees, I'm reliably seeing 14 psi @ 3200 RPM, which is a definite difference from the stock AVCS at 40 degrees.
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Old 04-03-2013, 05:30 PM   #6203
lukeskywrx
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Ok so the question now is why can the USDM motor only do 30 with the same cam gears? it is not an electronic limit because when we put the 207 into the same car I can run it out to 40

For example in Amroofs 2005 Forrester I can set 40 of advance in the rom and on the 257 motor it only runs 30 but with the 207 installed it hits 40. The ECU and all that is the same for both motors so there is something with the 257 that limits it to 30 while the 207 can go further. Is it as simple as the oil pressure is not high enough on the 257 to get more advance?


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Originally Posted by Concillian View Post
40 degrees is in terms of the crank. since there is a 2:1 ratio, it only takes 20 at the cams to result in 40 degrees relative to crank position. Just like how each cam gear tooth is 7.5 degrees of cam, but 15 in terms of the actual cycle. It's all explained in that thread.

The reason the JDM cars can have more advance is in the cams and heads. They run lower lift and the big ports bring the flow. The small ports require higher lift to get flow, so there's less cam advance available for a given valve to piston clearance, therefore lower AVCS advance in the USDM programming. 08+ Dual AVCS brings back 40ish degrees of overlap at low RPMs by adjusting the intake forward and the exhaust backwards.

I've programmed and logged 45 degrees, and I've definitely seen a difference from 40 degrees at <3000 RPM as a result.
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Old 04-03-2013, 06:18 PM   #6204
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It can't be oil pressure, but it could be OCVs or position sensors. Aren't both of those different between USDM and JDM?
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Old 04-03-2013, 07:40 PM   #6205
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Quote:
Originally Posted by Concillian View Post
It can't be oil pressure, but it could be OCVs or position sensors. Aren't both of those different between USDM and JDM?
I think you are right, I believe Amroof uses the JDM OCV with the usdm position sensors. Perhaps the usdm OCV is pressure limited to advance 30 deg while the jdm can push enough pressure for ~45 deg

Amroof- you have both OCVs on hand, want to do a little experiment?
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Old 04-03-2013, 07:40 PM   #6206
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Quote:
Originally Posted by Concillian View Post
It can't be oil pressure, but it could be OCVs or position sensors. Aren't both of those different between USDM and JDM?

Well, with the EJ207 in the 32-bit cars (EJ255/257), we are actually using the EJ255/257 intake cams and position sensors.

You are correct though, the OCV's are different on the EJ207 vs the EJ255/257. And we are using the EJ207 valves since we are using the EJ207 heads and the EH255/257 ones don't fit properly.
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Old 04-03-2013, 07:47 PM   #6207
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Quote:
Originally Posted by lukeskywrx View Post
Amroof- you have both OCVs on hand, want to do a little experiment?
How I picture Luke when I read this:





I have access to both as well...
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Old 04-03-2013, 07:47 PM   #6208
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hahahaa lmfao
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Old 04-03-2013, 08:14 PM   #6209
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But not a running car.......burn

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How I picture Luke when I read this:





I have access to both as well...
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Old 04-03-2013, 08:19 PM   #6210
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But not a running car.......burn
That's a good point. I was thinking about comparing them physically, but on a car would be the easiest approach. The problem is that they use two different connectors I think so swapping them is perhaps a bit tricky without repining the leads (swapping the connectors). I think they are very similar though and it's only a small keying feature difference. If I'm remembering correctly.
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Old 04-03-2013, 08:38 PM   #6211
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Installing FMIC, CAI, 20g, 1000cc Injectors, E85/91 (Dual Tune)
We'll see what numbers it throws at me.
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Old 04-03-2013, 09:45 PM   #6212
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Luke. I can swap them on my car but they are is a ****ty position and I can alps re pin them too. It's not that hard. Also I was chilling with Stephen (ia performance) and we were discussing this cam gear ****. He said that the gears are the same him and Dave from ralisport use the usdm one on jdm engines. Anyways. He thinks the extra advance is in the actual cam. But that is kind of off cause I have usdm Sti cams in my car running 40+ degrees of Avcs. So I think it could also be the passages to the ovc valves as well. They might flow better and can get more timing.
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Old 04-03-2013, 11:22 PM   #6213
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has anyone dealt with a restrictor on the stock vf37 on a version 8 as far as tuning? had to add one for open class rules. its a 34mm restrictor at the end of the turbo inlet. Its making the maf scaling a pain says the tuner, just looking on some insight if someone had done one before

its running super rich at the moment, and with the maf unplugged it idles great , maf plugged in it goes all over the place. already switched mafs and o2 sensors to check if they were bad but all is the same
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Old 04-03-2013, 11:28 PM   #6214
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Quote:
Originally Posted by AnthonyWang View Post
Installing FMIC, CAI, 20g, 1000cc Injectors, E85/91 (Dual Tune)
We'll see what numbers it throws at me.
Noiceee. Good luck. I'm installing some parts/some are already on.. A catless uppipe, catless turboback, cai, Sti tmic, hks bov, 750cc injectors, 255 pump, 16g XT. Should be puttin down 300+whp on a mustang dyno - conservative tune
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Old 04-03-2013, 11:37 PM   #6215
lukeskywrx
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The speed density rom originally came from a v8 group-n car that uses a restrictor. Give the carberry SD a try with the original VE map from the group-n car and it should be really close as it is the exact setup you have.

Quote:
Originally Posted by jhenry1983 View Post
has anyone dealt with a restrictor on the stock vf37 on a version 8 as far as tuning? had to add one for open class rules. its a 34mm restrictor at the end of the turbo inlet. Its making the maf scaling a pain says the tuner, just looking on some insight if someone had done one before

its running super rich at the moment, and with the maf unplugged it idles great , maf plugged in it goes all over the place. already switched mafs and o2 sensors to check if they were bad but all is the same
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Old 04-05-2013, 01:42 AM   #6216
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So in the chance that I spin a bearing in the future after a swap I found this

http://www.carmodsaustralia.com.au/s...207-10103ab750

Anyone else find any other places to buy an OEM 207 Shortblock ?
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Old 04-05-2013, 02:04 AM   #6217
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Quote:
Originally Posted by Gigs90 View Post
So in the chance that I spin a bearing in the future after a swap I found this

http://www.carmodsaustralia.com.au/s...207-10103ab750

Anyone else find any other places to buy an OEM 207 Shortblock ?
That's cool. I got a spun bearing. Wonder what shipping would cost
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Old 04-05-2013, 02:21 AM   #6218
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That's cool. I got a spun bearing. Wonder what shipping would cost
A kidney ?
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Old 04-05-2013, 02:40 AM   #6219
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A kidney ?
The amount id get for selling mine or the amount the hospital would charge me if I was in need?
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Old 04-05-2013, 02:59 AM   #6220
Gigs90
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The amount id get for selling mine or the amount the hospital would charge me if I was in need?
Selling
We're talking ice cube filled bathtub territory here.
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Old 04-05-2013, 04:07 AM   #6221
AnthonyWang
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Originally Posted by SubieSnacks02 View Post
Noiceee. Good luck. I'm installing some parts/some are already on.. A catless uppipe, catless turboback, cai, Sti tmic, hks bov, 750cc injectors, 255 pump, 16g XT. Should be puttin down 300+whp on a mustang dyno - conservative tune
Yep that sounds about right.
Im hoping for about 370-390 ish on 91 and fingers crossed for 450 on e85
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Old 04-05-2013, 04:11 AM   #6222
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Quote:
Originally Posted by Gigs90 View Post
So in the chance that I spin a bearing in the future after a swap I found this

http://www.carmodsaustralia.com.au/s...207-10103ab750

Anyone else find any other places to buy an OEM 207 Shortblock ?
http://www.jdmracingmotors.com/jdm-p...d-parts/Subaru

and a couple other places i dont remember.
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Old 04-05-2013, 04:27 AM   #6223
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Quote:
Originally Posted by AnthonyWang View Post

http://www.jdmracingmotors.com/jdm-p...d-parts/Subaru

and a couple other places i dont remember.
Ummmm.... No
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Old 04-05-2013, 04:34 AM   #6224
lukeskywrx
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I got my motor from them and so did kpluiten, both were super clean and they were great to deal with (calls, tracking info, lots of pics). My IACV broke during shipping and they refunded me what I asked to cover it no questions asked.

I would call them up and ask for a quote on a long block If I were in your position then sell off your old one to someone who wants to build. They also occasionally get 207s with bad compression that they usually sell to local shops for rebuilds if you wanted to go down that road.

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Originally Posted by stlnation View Post
Ummmm.... No

Last edited by lukeskywrx; 04-05-2013 at 04:41 AM.
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Old 04-05-2013, 04:49 AM   #6225
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Quote:
Originally Posted by lukeskywrx View Post
I got my motor from them and so did kpluiten, both were super clean and they were great to deal with (calls, tracking info, lots of pics). My IACV broke during shipping and they refunded me what I asked to cover it no questions asked.

I would call them up and ask for a quote on a long block If I were in your position then sell off your old one to someone who wants to build. They also occasionally get 207s with bad compression that they usually sell to local shops for rebuilds if you wanted to go down that road.
Still no... Hes talking about a new oem shortblock. Not a used block from a vendor.
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