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Old 04-28-2011, 08:59 AM   #26
Homemade WRX
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No, I'm trying to use USDM heads with JDM 'bits'.

Stock EJ257 cams have the same duration as EJ207 but the 257 cams have more lift on both cams already.

What I'm trying to do is find an easy and more affordable way (USDM heads are cheap in comparison) for USDM WRX (02-05) to get AVCS.
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Old 05-02-2011, 10:59 PM   #27
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So I just pulled apart my V8 big port heads and was looking at one of my avcs solenoids and it has a different part number from what was all previously mentioned. P/N 10921AA001 vs. 002 which what was mentioned earlier. The 001 was on the drivers side and the passenger side head has a 002 solenoid. any ideas? just interesting to me. And I have JUN 272/272 cams that I'm gonna sell for jdm V5+ heads. Anyonnneeeee interested?!?!?!?!?
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Old 05-02-2011, 11:13 PM   #28
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are the jun's avcs cams or not? ver 5/6 were not and 7+ were
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Old 05-04-2011, 11:09 PM   #29
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looks like we lost some info, but to basically reiterate what i have have found, there is a good chance the JDM cams and sensors will work in the USDM 2.5 heads will work, i have sent alot of pictures and info to Homemadewrx and he is going to compile it into a good thread and i will fill in any info he doesnt have
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Old 05-05-2011, 04:40 AM   #30
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The Jun 272s that I have will work in both V5/6 and V7+ ej207s but they are non-avcs cams, Jun only make avcs cams for the V7+ in a 264 duration profile. Also I have been told the JDM cams will work in a USDM head but I think there are major differences with the sensors that will not be compatible.
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Old 05-05-2011, 09:19 AM   #31
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***EVERYONE who has even spent two minutes knows the difference in cam sensor type***

moving beyond the basics; is cam sensor/trigger alignment issues and cam trigger timing (phasing with the crank timing). Alignment isn't looking too far off from the pics Sean has sent to me (don't worry, forming an actual thread), however sensor depth needs to be looked into. Then it'll come down to sitting with a degree wheel and marking out cam timing with regards to crank timing on an actual engine. As soo as I get a set of cams, I can check this on USDM block and heads...though timing won't really be much of an issue to worry about. With the same everything except for intake cams, I'll compare USDM to JDM for any differences.
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Old 05-05-2011, 09:30 AM   #32
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Homemade, did you get my PM before the site went down? I am picking up those 207 heads tomorrow, I cant rememmber if your home or not on Friday, If you are I could detour your way if you want to measure up the JDM cams
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Old 05-05-2011, 09:33 AM   #33
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I got the PM...I was off yesterday and at first I was seeing all these PMs and threads that I'd already replied to. I thought I was having a serious case of deja vu until I looked at the top of the forum

I'm not sweating it. I'll find another set of JDM heads to meaure. I'm hoping the trashed ones that Mike has can be used to get the measurements from...
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Old 05-05-2011, 09:46 AM   #34
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lol.


but I'll have cams

I know you have a busy weekend planned, just wasnt sure where you were going to be Friday, thought I offer.
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Old 05-05-2011, 10:12 AM   #35
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yeah, I appreciate it. It isn't something that gets slapped together in an afternoon anyway...it be more of a day project.

either way, I'll be home in Virginia Beach this weekend.
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Old 05-05-2011, 10:24 AM   #36
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i want to know the real duration of my cams, lol i would really like some with more lift to take advantage of the bigger valves and bigger turbo, but with a said 260-262 duration i think they are good where they are, but i dont know how accurate that is,
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Old 05-05-2011, 10:34 AM   #37
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260-262 advertised is only a smidge more than stock...the lift and ramprates is what will make the difference there.
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Old 05-05-2011, 11:42 AM   #38
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well jdms have no lift lol less than 9, i was under the assumption stocks are in the low 250's, these are just standard 207 ver8 spec C cams, as far as i can tell they are the biggest that subaru has made, well in terms of duration, if i upgrade i want some 272AVCS with 10 lift lol but again thats 1000 dollars, may save up for them later, all i know is that from the wear marks on the cams, A this engine literally has no miles before i got it, or B they arent like other cams i have seen, heck they dont even completely touch the buckets, only in about 3 spots in the cams i will try to get a picture and post them, if i didnt need them so soon for my engine i would send them to you, engine needs to be together in about a month, let me know if you want to try to work something out if you have enough time between now and then

well i tried to get pictures but its pretty much impossible, basically they look like they only touch at the tip of the lobe, then both down sides about where it looks like the lobe would start and its just a little little secting, 1/8 inch, i was under the interpretation the whole lobe should touch and have a nice even wear, ????

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Old 05-05-2011, 11:49 AM   #39
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Quote:
Originally Posted by Homemade WRX View Post
260-262 advertised is only a smidge more than stock...the lift and ramprates is what will make the difference there.
and im going off what was measured a few years back by a guy on here, think it was jeff
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Old 11-08-2012, 08:02 AM   #40
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I have a USDM 2.5 Long block that is build

Then I have a JDM V8 Long block with engine wiring harness

Then I have a 97 Impreza (race car)with WRX harness and AVCS enabled extra harness ( i was running JDM V8 engine in it till now)

I have Motec Plug and Play ECU for 5 plug WRX /JDM harness. I also have stock JDM V8 ECU.

Im looking to do this....

Take the build 2.5 USDM long block Use JDM V8 Intake with engine wiring harness on it.

Take Driver side intake cam gear from JDM V8 motor put it on USDM 2.5

Take JDM cam gear sensor put it on USDM driver side head

Now to the part im having problems with....

the cams sensors are different JDM and USDM Can I keep USDM cams and sensors and just wire up the USDM cams sensor plugs to JDM wiring on the intake...???

Or there is another way to do THIS WHOLE project?
the whole commotion is due to (im tired of lack of torque on my JDM V8 motor in my race car.So i want to keep my wiring from WRX with AVCS wire patch harness in the car and be able to switch engines as desired.

Thank You
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