|
|
|
|
Thread Tools | Display Modes |
12-03-2012, 10:26 PM | #5026 | |
Scooby Specialist
Member#: 287080
Join Date: Jun 2011
|
Quote:
I know my brown connector on the motor harness I had a couple pins loose from when they disconnected them from the car they came out.
* Registered users of the site do not see these ads.
|
|
12-04-2012, 02:07 PM | #5027 | |
Scooby Specialist
Member#: 856
Join Date: Feb 2000
Chapter/Region:
International
Location: Cambridgeshire, England, UK
Vehicle:2123 JDM STi Black |
Quote:
|
|
12-04-2012, 02:30 PM | #5028 |
Scooby Specialist
Member#: 856
Join Date: Feb 2000
Chapter/Region:
International
Location: Cambridgeshire, England, UK
Vehicle:2123 JDM STi Black |
Those in tank filters are hideous things.
|
12-04-2012, 03:11 PM | #5029 |
Scooby Guru
Member#: 120273
Join Date: Jul 2006
Chapter/Region:
SWIC
Location: AZ
Vehicle:06 WRBWRXWGN Now with 100% more Spec-C |
This is the truth. I've seen more than a couple simply plug up so tight the car dies. I've seen them split open and rob the system of pressure as well, causing the the car to run poorly. I'm not clear why Subaru switched to this in-tank setup, but I always thought it might have to do with the emissions pumps on the 06+ 32bit cars, but I don't think so after looking at the relatively compact version of that system in the 07+ cars. Probably cost.
I'm relocating mine to the bay with my EJ207 swap. |
12-04-2012, 03:40 PM | #5030 | |
Scooby Guru
Member#: 120273
Join Date: Jul 2006
Chapter/Region:
SWIC
Location: AZ
Vehicle:06 WRBWRXWGN Now with 100% more Spec-C |
Quote:
|
|
12-04-2012, 03:48 PM | #5031 | |
Scooby Specialist
Member#: 107179
Join Date: Feb 2006
Chapter/Region:
MWSOC
Location: Bensenville, IL
Vehicle:S4, WRX 1.27 60', 9.37 1/4 |
Quote:
I have seen this on 3 EJ207 swaps now with wiring where polarity is reversed on one or both of the connectors to the rear cam sensors. |
|
12-04-2012, 04:12 PM | #5032 | |
Scooby Newbie
Member#: 214589
Join Date: Jun 2009
Chapter/Region:
NWIC
Location: Seattle
Vehicle:2006 FXTi |
Quote:
thanks for the info |
|
12-04-2012, 04:18 PM | #5033 | |
Scooby Specialist
Member#: 107179
Join Date: Feb 2006
Chapter/Region:
MWSOC
Location: Bensenville, IL
Vehicle:S4, WRX 1.27 60', 9.37 1/4 |
Quote:
Edit: Re-reading and trying to understand your post to make sure I understand So you swap solenoids, the problem follows, and then reverts of it's own accord? |
|
12-04-2012, 04:28 PM | #5034 | |
Scooby Newbie
Member#: 214589
Join Date: Jun 2009
Chapter/Region:
NWIC
Location: Seattle
Vehicle:2006 FXTi |
Quote:
-logged the car, read 50+ on right, 0 on left. -swap solenoids to see if its a bad solenoid. issue moves, now reads 50+ on left, 0 on right. -go in to check wiring, since it was reading high anyway, check ECU plugs are seated. issue moves sides, reads left but not right now, without swapping solenoids. |
|
12-04-2012, 05:18 PM | #5035 | |
Scooby Specialist
Member#: 107179
Join Date: Feb 2006
Chapter/Region:
MWSOC
Location: Bensenville, IL
Vehicle:S4, WRX 1.27 60', 9.37 1/4 |
Quote:
It wouldn't surprise me if you have a grounding issue or are not using shielded wire (that is grounded) from the rear avcs sensors. |
|
12-04-2012, 05:53 PM | #5036 |
Scooby Specialist
Member#: 856
Join Date: Feb 2000
Chapter/Region:
International
Location: Cambridgeshire, England, UK
Vehicle:2123 JDM STi Black |
That would be my first port of call too, wiring up a harness without good shielded sensor lines can cause havock.
|
12-04-2012, 06:10 PM | #5037 | |
Scooby Newbie
Member#: 214589
Join Date: Jun 2009
Chapter/Region:
NWIC
Location: Seattle
Vehicle:2006 FXTi |
Quote:
|
|
12-04-2012, 06:39 PM | #5038 |
Scooby Specialist
Member#: 107179
Join Date: Feb 2006
Chapter/Region:
MWSOC
Location: Bensenville, IL
Vehicle:S4, WRX 1.27 60', 9.37 1/4 |
|
12-04-2012, 10:39 PM | #5039 |
Scooby Specialist
Member#: 224785
Join Date: Sep 2009
Chapter/Region:
MWSOC
Location: neenah
Vehicle:2005 wrx-jdm207 i went black... |
every time there is a avcs problem it almost always comes down to wiring! keeping track of colors and wires makes all the difference!
|
12-06-2012, 02:23 AM | #5040 |
Scooby Specialist
Member#: 291949
Join Date: Aug 2011
Chapter/Region:
PRSIC
Location: https://t.me/pump_upp
|
any stories of V8/V9 engine failures? (from over revving or anything at all).
I wonder why the EJ207 hypereuretic pistons have been proven reliable at 400bhp+ but the USDM STI's hypereutectic pistons blow ringlands, what gives? Last edited by 2JZ; 12-06-2012 at 04:13 PM. Reason: forgot to add USDM |
12-06-2012, 07:13 AM | #5041 | |
Scooby Newbie
Member#: 225439
Join Date: Oct 2009
|
Quote:
I have a version 8 being rebuilt at EFI Logics as we speak. I was making 320 wheel on an hta68. It had a cyl #2 ring land failure. Possible cause was a lean condition that I was totally unaware of. Brought the car to do some logging two months after purchase and this was caught on the graph then compression test done. Best thing to keep in mind is these are junkyard motors and there really no guarantees. I have heard of one guy that opened his motor up for building purposes fresh from customs and he said it looked terrible inside. So it can happen. But also in my case it could have possibly been prevented assuming it was in fact the lean condition that caused it. |
|
12-06-2012, 07:29 AM | #5042 |
Scooby Guru
Member#: 46135
Join Date: Oct 2003
Chapter/Region:
Tri-State
Location: NY
Vehicle:19 GLA45 AMG C63 AMG |
The HTA is single scroll.
You converted this to single scroll then, using what? an OEM single scroll exhaust manifold? Who tuned it originally? |
12-06-2012, 09:23 AM | #5043 |
Scooby Specialist
Member#: 86107
Join Date: Apr 2005
Chapter/Region:
E. Canada
Location: 10% REAL FRUIT JUICE
|
I blew 2 this summer alone
First was a shady tune second was built too 'tight' for the abuse I was giving it. Third is 6000 miles in. ( built ). I'm getting REAL good to disassemble and reassemble in a flash And now, I need to take the left head off. sounds like it's about to puke. edit : Engine parts everywhere in my life now Last edited by WRick; 12-06-2012 at 09:59 AM. |
12-06-2012, 09:34 AM | #5044 | |
Scooby Guru
Member#: 79643
Join Date: Jan 2005
Chapter/Region:
NESIC
Location: The internet
Vehicle:2021 STI TE Terminal black pearl |
Quote:
On another note, my 207 lives! Friends and I did the swap yesterday and it runs. We just have to figure out the AVCS, get an exhaust adapter fabbed up, and figure out this odd buck it seems to be doing at around 2200rpm. |
|
12-06-2012, 10:58 AM | #5045 |
Scooby Specialist
Member#: 59837
Join Date: Apr 2004
Chapter/Region:
SWIC
Location: Nor Cal
Vehicle:2004 Spec-C Type RA What MAF? -Speed Density! |
Put this in the rumor bin till someone else can shed some light, but I have heard and suspect that the once piece v8+ intake manifold is matched to the flow of the twin scroll header. And also the standard manifold was designed and build specifically for the single scroll header.
People always want to think that subaru was being sloppy with the uneven flow characteristics of the two piece intake manifold but I suspect they tuned it to work with the uneven single scroll header. Perhaps mixing and matching the one piece manifold and a single scroll system is not a good idea unless you tune on the safer side. These motors like to be tuned rich with lots of timing, but that is generally not the way people tune in Merica. I have found the 207 to be rather prone to knock if you start pulling too much timing. Also so many people say they want the v7 motor because of the "forged" pistons and it is cheaper. V7 started in 01 in japan so you are looking at a minimum 12 year old motor that may have been sitting in junk yard overlooking the ocean. I bought the freshest v9 spec-C I could find and it was still lightly salted on the outside, I believe Kpluiten saw the same on his. Last edited by lukeskywrx; 12-06-2012 at 11:07 AM. |
12-06-2012, 11:10 AM | #5046 | |
Scooby Specialist
Member#: 56754
Join Date: Mar 2004
Chapter/Region:
NESIC
Location: Mass
Vehicle:2004 Hybrid 2.5XTR RIP Chris@EFI |
Quote:
|
|
12-06-2012, 11:19 AM | #5047 |
Scooby Guru
Member#: 79643
Join Date: Jan 2005
Chapter/Region:
NESIC
Location: The internet
Vehicle:2021 STI TE Terminal black pearl |
|
12-06-2012, 11:28 AM | #5048 |
Scooby Guru
Member#: 46135
Join Date: Oct 2003
Chapter/Region:
Tri-State
Location: NY
Vehicle:19 GLA45 AMG C63 AMG |
I thought I'd ask about the manifold because of some opinions I have.
First, the OEM ROM "coincidentally" has zero compensations, when the factory moves to V8 twinscroll. The USDM has compensations. Second, there was a thread a while back, about #4 cyl piston failures. This brought up not only the compensations in the ROM, but also older intake manifolds flow tests. The OEM manifold on a WRX and on a Sti, is flow biased. Then it was brought up that the TGV then equalize the flow, but I found a test through the TGV's and it was still biased. The JDM long runner manifold (that coincidentally appears at the same time with the twinscroll exhaust manifold), was never flow tested, to where the results were available on the board. The problem with the unequal manifold car is that you would not know how one mod or another affects this bias. The worst is probably the crosspipe upgrade. So once you get your tune done, you'd have to reballance your engine using something like an innovate TC-4. On an equal length, twinscroll engine, one can make a better guess that it remains unbiased, with normal mods. It should still be checked. The problem with checking it is that we have a tubular exhaust manifold and by the time you'd weld 4 bungs to it, it would be more or less ... swiss cheese. The odds of it cracking with 4 bungs welded are now higher. Once you ballance it, you'd have no use for the 4 EGT's. And the 4 sensors, since they have to protrude into the runner half way in, would cause a turbulence that you would normally not have there. So this would have to be something like a community tool, that one guy makes and then rents it out for everyone else to finish their tune. One piece of information is that in the built engine section, they had a big thread with the longest lasting built engines (no refresh). As I was reading through it, the guy that I thought was most believable, out of the few that were exceeding 40-50K miles, had used a TC-4 to ballance his engine, with the compensations. There was an argument made that actually 4 O2 sensors would be needed, I think 4 EGT's or CHT's would be close enough and certainly better than nothing. I plan to address this issue with measuring CHT's, it's less intrusive. Last edited by Vlad; 12-06-2012 at 11:46 AM. |
12-06-2012, 11:46 AM | #5049 |
Scooby Specialist
Member#: 86107
Join Date: Apr 2005
Chapter/Region:
E. Canada
Location: 10% REAL FRUIT JUICE
|
I plan to address this by shoving water/meth down there.
Keeps everything nice and cool. and for ballerism. |
12-06-2012, 11:46 AM | #5050 |
Former Vendor
Member#: 178047
Join Date: Apr 2008
Chapter/Region:
SWIC
Location: AZ
Vehicle:02 WRX STI Spec C Black |
I have tested AFR and EGT at all four cyls on both old and new style manifold and equal and unequal headers. on 2.0 and 2.5. Years and years go.. Probably around 2005 the first time and then 2008 again. You dont need four sensors. You can use an single afr bung and install EGT in that spot with a homade adapter per cyl.
A Free Multi position parallel port printer switch is a good way to go for this. They have Gold contacts inside and give you plenty of wires to switch the sensors for EGT. Then you can use a Multimeter (fluke) for the readout. The connectors are available at Rat shack and are cheap. You can wire this up in an hour. You dont want to run the AFR sensors cold but you can leave the heater wires all on and then switch the signals. Or just switch the sensor out each time and then compile data later on. The first set of tests where done because after importing and working on alot of V7 and V8 Spec C motors (real ones) I noticed that from the factory, they had a different spark plug installed into one cyl. All motors where leak down tested and the plugs had to come out to do the test before sale. Normal STI engines had the same plugs. I believe that as many as 75% of the "spec C' engines you see or people own, are in fact standard STI engines. I found that the ECU sticker was reproduced(faked) as early as 2005 to list the Spec C information and the front white sticker was faked very early on. The fact of the matter is that the japanese retailers and auction houses simply made alot more money of that motor and ecu said Spec C. When I use my current favorite intake manifold, the cosworth, I have to remap the per cyl comps. I am thinking of doing this test again for the later model STI's as I would like to have the data. However, I have done extensive testing on the dyno with cyl comps for 2008 to 2012 STI and have seen the same patterns as the older cars. The plastic motor WRX's are a different story. C |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
ej207 owner wants opinions | adbramsay | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 2 | 02-26-2011 07:29 PM |
Ej207 V6 | AndrewFD3 | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 10 | 06-03-2010 04:53 PM |
JDM Sti EJ207 V9 crank 75mm or billet crank (K1, Manley) VENDORS ??? | L'frise | Private 'Wanted' Classifieds | 7 | 06-03-2010 09:24 AM |
08 ej207 JDM dual AVCS heads on a built v7 ej207 | icev7 | Built Motor Discussion | 17 | 02-21-2010 03:21 PM |
Ver 8 EJ207 Owners Check In | spoolinsuby | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 21 | 10-17-2005 01:56 AM |