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Old 05-23-2016, 09:10 AM   #876
02RexWI
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Quote:
Originally Posted by Bosque View Post
I am planning on doing this.
I just want to confirm that you have ran this and haven't had any issues.
I just got done looking at it and had a few clarifications.

You didn't do anything to the passenger side cam.
You had to mill the cam down as well so that the whole surface was flush before extending the keyhole.

Also you have since run it and had zero issues? It appears to me that the gap is a little larger between the sensor and the cam in the 207 heads rather than the stock heads.
There are two machining operations that need to be done to the cam:
1. Turn the diameter down (lathe)
2. Extend the timing notch (mill)

This could be done on a lathe with live tooling, but it was easier to do it in two setups for the shop I work with.

It is running without issues related to the cam sensors. I'm having a problem with ignition timing advance being way too far advanced at time, but it's something that I don't think is related to the cam sensors. This issue has been seen by tuners on the 04-05' STi ECU with the stock EJ257 engine.

Only the driver side cam was modified. There was also clearance that needs to be ground on the cam bearing cap around the friction weld area on the cam. Like in the OP's post it was only a problem on one side.

Everything else about the swap is good, o-rings sealed up perfect, etc.
If you're interested I can have the shop I work with modify your cam. Their prices are pretty reasonable. PM me if interested.
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Old 05-28-2016, 10:32 AM   #877
02RexWI
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Update: It appears that using 2005 STi EJ257 intake cams and V9 EJ207 exhaust cams can result in valve interference if the AVCS timing from an EJ207 is used. I still need to confirm with a scope down the spark plug hole, but the knocking noise I had in the engine is gone once I changed the AVCS timing back to EJ257 ranges (much less advance).
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Old 09-19-2016, 02:16 PM   #878
decodeddiesel
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I am currently dropping a V7 EJ207 into my '05 STi (EJ257 spun a rod bearing). I wish I would have seen the post about machining the cam 2 weeks ago as I went ahead and slotted the cam position sensor hole for the USDM sensor. Really wasn't crazy about grinding on my new-to-me EJ207, but oh well. I have a friend who will probably do this swap in the near future (once he sees mine working), and I think machining the cam is the way to go.

A few observations:

The plug for the knock sensor is different, so you will have to replace the JDM knock sensor with a USDM knock sensor.

The plugs for the AVCS solenoids are different, so for the time being I decided to use my USDM AVCS solenoids. I have not ruled out the possibility of using modifying the USDM harness to work with the JDM plugs however.

The cam cap on the drivers side must be modified to clear the friction welds on the cams.

Check the valve clearance on the exhaust cams. Mine were out on the drivers side and needed different buckets. Passenger side was good to go.

I haven't quite figured out the PCV system completely yet. I did swap the nipple on the back of the USDM DBW intake manifold with a WRX PCV as that is what the JDM motor uses. I am about 90% complete on setting up the PCV.

USDM EJ257 coils will not fit into the EJ207, the boots are too short.

Be sure to buy the correct cam seals. I am using PN 806742160 on the intake cams, and 806732160 on the exhaust cams.

Valve cover seals are specific to the EJ207. I bought mine from IA Performance. Spark plug gaskets and bolt washer/gaskets are the same as the 2.0 WRX.

I am planning on upgrading to a Steamspeed STX 67+ or 71 turbo once I have this up and running as I already have 850cc DW side-feed injectors from running E85 (back when you could actually find it around here).

Last edited by decodeddiesel; 09-19-2016 at 02:25 PM.
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Old 09-19-2016, 05:02 PM   #879
02RexWI
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Quote:
Originally Posted by decodeddiesel View Post
I am currently dropping a V7 EJ207 into my '05 STi (EJ257 spun a rod bearing). I wish I would have seen the post about machining the cam 2 weeks ago as I went ahead and slotted the cam position sensor hole for the USDM sensor. Really wasn't crazy about grinding on my new-to-me EJ207, but oh well. I have a friend who will probably do this swap in the near future (once he sees mine working), and I think machining the cam is the way to go.

A few observations:

The plug for the knock sensor is different, so you will have to replace the JDM knock sensor with a USDM knock sensor.

The plugs for the AVCS solenoids are different, so for the time being I decided to use my USDM AVCS solenoids. I have not ruled out the possibility of using modifying the USDM harness to work with the JDM plugs however.

The cam cap on the drivers side must be modified to clear the friction welds on the cams.

Check the valve clearance on the exhaust cams. Mine were out on the drivers side and needed different buckets. Passenger side was good to go.

I haven't quite figured out the PCV system completely yet. I did swap the nipple on the back of the USDM DBW intake manifold with a WRX PCV as that is what the JDM motor uses. I am about 90% complete on setting up the PCV.

USDM EJ257 coils will not fit into the EJ207, the boots are too short.

Be sure to buy the correct cam seals. I am using PN 806742160 on the intake cams, and 806732160 on the exhaust cams.

Valve cover seals are specific to the EJ207. I bought mine from IA Performance. Spark plug gaskets and bolt washer/gaskets are the same as the 2.0 WRX.

I am planning on upgrading to a Steamspeed STX 67+ or 71 turbo once I have this up and running as I already have 850cc DW side-feed injectors from running E85 (back when you could actually find it around here).
Let me know if you have issues running AVCS advance of 40 degrees.

Also, if you need the cams machined let me know. I can get them done at a reasonable price.
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Old 09-19-2016, 05:53 PM   #880
decodeddiesel
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Quote:
Originally Posted by 02RexWI View Post
Let me know if you have issues running AVCS advance of 40 degrees.

Also, if you need the cams machined let me know. I can get them done at a reasonable price.
Will do. Stephen from IA Performance is going to be doing the tune when the time comes as he apparently has experience tuning these set-ups. Honestly though, it's going to be a while until I have her back on the road (adult life and all).

Did you ever figure out the potential interference issues you mentioned here?
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Old 09-20-2016, 08:21 AM   #881
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Quote:
Originally Posted by decodeddiesel View Post
Will do. Stephen from IA Performance is going to be doing the tune when the time comes as he apparently has experience tuning these set-ups. Honestly though, it's going to be a while until I have her back on the road (adult life and all).

Did you ever figure out the potential interference issues you mentioned here?
No, honestly haven't driven the car more than a few hours since the swap. I ended up dropping the AVCS advance back to what the 257 was running and driving it like that. Whenever people stop blowing up their cars and business slows down for me I'll spend some more time on it, but for now it's just sitting. The car still runs great with lower AVCS advance, but there's probably a bit of low to mid range power on the table if I could get more advance.
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Old 09-20-2016, 11:17 AM   #882
decodeddiesel
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Don't feel bad about not driving your swap much, my STi has been sitting dormant in my garage for 4 years now. Even once I get the V7 running, she's not going to be my daily and I don't see me driving her more than a few hours a week tops. She's going to be much more track focused.

I am curious as to how the advance will work out during the tune. Correct me if I'm wrong, but the 40 degree advance limit is set by the JDM cam gears themselves, correct? Only reason why I am asking is I swapped in my USDM AVCS solenoids to match the plugs on my wiring harness. I compared the JDM and USDM solenoids and they look completely identical to me.
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Old 09-20-2016, 01:06 PM   #883
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Originally Posted by decodeddiesel View Post
Don't feel bad about not driving your swap much, my STi has been sitting dormant in my garage for 4 years now. Even once I get the V7 running, she's not going to be my daily and I don't see me driving her more than a few hours a week tops. She's going to be much more track focused.

I am curious as to how the advance will work out during the tune. Correct me if I'm wrong, but the 40 degree advance limit is set by the JDM cam gears themselves, correct? Only reason why I am asking is I swapped in my USDM AVCS solenoids to match the plugs on my wiring harness. I compared the JDM and USDM solenoids and they look completely identical to me.
I think I used the JDM solenoids and soldered on new connectors. I'm not sure if it's limited by the gears or the solenoids for sure, I've seen both theories.
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Old 09-20-2016, 01:53 PM   #884
decodeddiesel
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Quote:
Originally Posted by 02RexWI View Post
I think I used the JDM solenoids and soldered on new connectors. I'm not sure if it's limited by the gears or the solenoids for sure, I've seen both theories.
Well, I guess we'll find out. Honestly though, I spent a good deal of time comparing the USDM solenoids to the JDM ones, and to my mechanical engineer eye, they look completely identical. If there is a difference it's more than "skin deep". I will keep the JDM ones and if I can't get the full 40-degrees I will swap them back in seeing how it takes a whole 3 minutes to do. I will be using the JDM cam gears though for sure. I didn't want to pillage the JDM wiring harness in the hopes of selling it someday, but I am certainly not afraid to do some cutting and soldering.

Are you still on the JDM turbo? Do you have a V7, 8 or 9? Have any dyno graphs to share?
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Old 09-21-2016, 10:45 AM   #885
02RexWI
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Quote:
Originally Posted by decodeddiesel View Post
Well, I guess we'll find out. Honestly though, I spent a good deal of time comparing the USDM solenoids to the JDM ones, and to my mechanical engineer eye, they look completely identical. If there is a difference it's more than "skin deep". I will keep the JDM ones and if I can't get the full 40-degrees I will swap them back in seeing how it takes a whole 3 minutes to do. I will be using the JDM cam gears though for sure. I didn't want to pillage the JDM wiring harness in the hopes of selling it someday, but I am certainly not afraid to do some cutting and soldering.

Are you still on the JDM turbo? Do you have a V7, 8 or 9? Have any dyno graphs to share?
Yeah, I'm still on the stock twin scroll setup. I made a custom downpipe and mated it up to the cheap cat back exhaust I had on before... Note: the twin scroll setup sounds very ricey without a muffler that actually has baffles. I'm going to go with a stock STi cat back and see if that cleans up the exhaust note.
The engine is a V9, but no dyno graphs at this point because I haven't finished the tune.
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Old 09-21-2016, 10:51 AM   #886
decodeddiesel
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Thanks for getting back to me. Good luck!
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Old 09-22-2016, 02:24 AM   #887
TomMannon
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V7 sti rear seat? Nice i got one on my wagon too. Your the only other person ive seen with one in AZ. Know of anyone else with them?
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Old 09-22-2016, 02:26 AM   #888
TomMannon
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Quote:
Originally Posted by kpluiten View Post
I picked up some interesting parts tonight:









I'm still not sure what my plans are for this project, or even the timeline, but the opportunity to pick these up presented itself. I got to cut the quarters oy which was kind of fun.

I'm thinking sedan factory widebody with 05-07 rear fender arches, STi side skirts, and CS bottom line kit all around. But we'll see what happens.

If you ever decide to sell these please let me know!
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Old 11-08-2016, 02:11 AM   #889
WelDun1
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Quote:
Originally Posted by kpluiten View Post
And lastly, because I forgot to post these pictures before, here are some shots of a neat fitting I found in the Summit catalog: it's a fuel hard line to AN adapter. It works with the stock Subaru hard lines into the bay and replaces the frustrating factory quick connects or the conventional hose and hose clamp method. They are double oring'd to prevent leaks.

Lube up the hard line a bit to protect the orings from damage and push the fitting on. It should be a bit tight at the orings compress:


Push it until it stops:


The you thread in this part which locks the fitting in place using the flare on the hard line:


Completed:

Did you find a fitting/adapter that fir the Feed line? The feed line is different than the return. The 5/16 hard line adapters do not fit on the feed line because the tip of the line is bigger, more like 3/8. ive bought 2 different fittings only to find that they dont work. The push on style doesnt lock, and the fitting w/ Ferrell doesnt work bcuz the Ferrell doesnt slide over the tip. So i was wondering if the fitting you used on this return line fit on the feed as well. I notice that it is different than the 2 ive tried, but the only problem that i see is that the feed line doesnt have that "rib" an inch or so back like the return line does to create resistance for the fitting??? what do you think?

Last edited by WelDun1; 11-08-2016 at 02:16 AM.
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Old 12-07-2016, 03:08 PM   #890
KP
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Bump.
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Old 12-19-2016, 03:56 PM   #891
teamstubaru
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I know this is probably beating an old dead horse, but I am interested in the adapter plate you made to adapt the stock usda throttle body to the jdm intake, we are having issues with our set up and came across your thread with the adapter plate, I am new to this forum and not sure how to contact you
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Old 12-28-2016, 09:56 PM   #892
Suby God
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awesome build
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Old 03-31-2017, 11:27 AM   #893
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Hi - I'm also looking for a decent adaptor plate for a DBW TB onto a spec c manifold - there's very little out there and nothing as nice as kpluiten designed one here - Unfortunately his inbox is full so I've not been able to contact him. If anyone knows if he's still making these - please let me know!
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Old 04-03-2017, 10:33 AM   #894
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Nice bump!

Is KP still around?
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Old 04-03-2017, 01:01 PM   #895
02RexWI
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Originally Posted by dr_jon3s View Post
Hi - I'm also looking for a decent adaptor plate for a DBW TB onto a spec c manifold - there's very little out there and nothing as nice as kpluiten designed one here - Unfortunately his inbox is full so I've not been able to contact him. If anyone knows if he's still making these - please let me know!
I bought one last year and at that time he still had some in stock.
If he's not making them anymore I can make a few up.

-Mark
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Old 04-24-2017, 11:05 AM   #896
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Hi - Mark - I've not been able to contact him at all - would really appreciate it if you might be able to help me out - I'll drop you a PM.
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Old 05-18-2019, 04:43 PM   #897
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Bump.
Bump?
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Old 05-28-2019, 11:27 AM   #898
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Damn! That 2 year old bump
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Old 05-28-2019, 01:00 PM   #899
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Damn! That 2 year old bump
...of a thread full of great content.
I wish for more of these threads in today's NASIOC
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Old 05-28-2019, 01:42 PM   #900
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I wish for more of these threads in today's NASIOC
Yeah all of the Subaru owners have went to the Facebook groups....
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