Welcome to the North American Subaru Impreza Owners Club Thursday March 28, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Subaru Conversions

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 10-08-2011, 01:36 AM   #1
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default '68 Porsche 912 conversion - 2005 STi EJ207

Ok, so I'll post up my transplant project. goal is to mate it to the 901 for now and be gentle with 1st...we'll see how long that lasts. i want to run as much of this motor in stock form but due to fitment issues, some things will have to be changed, namely exhaust hanging too low and oil pain also too low. header will be a 4-2-1 equal length and place the turbo in front or near the crank pulley. i'd really like to just keep the intake manifold just the way it is so i don't have to redo the stock wiring harness. i'll be running the stock ecu as well so it can handle the AVCS

Wali at JDMRacing set me up with this lovely beast, a 2005 STi EJ20T ver 8 spec-c motor.





got an adapter plate to mate it to 901/915's from Outfront





the harness on the motor is complete but i will have to source a few connector ends to make a connecting harness from motor harness to the ecu. also will need the connectors that plug to the ecu. if anyone has any ideas, i'd be much obliged.





parting shot with the ps and ac gone


Last edited by RonW; 11-13-2013 at 09:47 AM.
RonW is offline   Reply With Quote
Old 10-08-2011, 08:32 AM   #2
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
19 GLA45 AMG
C63 AMG

Default

I have the V9 Spec C, from Wali. Congrats, nice engine.

Get the killerb oil pickup, to protect your investment. The part number of your pickup is the same as the USDM Sti that is known to have problems.

Mine was ok when I replaced it, but now I can forget about it.

Also, this engine calls for an oil radiator. When you install it, the oil temperature becomes more stable and I the oil pressure seemed to climb 1 notch.
Take a look at the EJ207 owners thread, there's a lot of good info about maintenance, etc.

If you're doing a bigger turbo, I suggest the FP oil line kit, it's well put together.

This engine comes with tables in the ECU for automatic intercooler sprayer. Also boost per gear and temperature. You can ajust the gear thresholds, for your application. I changed them from OEM 6 speed JDM to my USDM 5 speed and it reads correctly.
Vlad is offline   Reply With Quote
Old 10-08-2011, 04:05 PM   #3
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default

vlad, thanks for the info, will definitely look into that.

well, hit the pick and pulls and the like this AM but no luck on harness/ecu ends i'll have to see if someone has a full chassis harness but i sure hate to cut one up since the full thing is kinda pricey.

anyway, bolted it to the tranny and man, looks like is was born there



time to start figuring out how I'm gonna mount it but i think I'm gonna use the stock motor mounts and tranny side of the motor and weld a bracket at the chassis
RonW is offline   Reply With Quote
Old 10-11-2011, 12:50 AM   #4
WR Boxer
Scooby Newbie
 
Member#: 171395
Join Date: Feb 2008
Chapter/Region: NWIC
Location: Corvallis, OR
Vehicle:
2004 STi
Java Black Pearl

Default

Looks great man! Can't wait to see the progress
WR Boxer is offline   Reply With Quote
Old 10-11-2011, 10:14 AM   #5
CatfaceType-R
Scooby Guru
 
Member#: 81102
Join Date: Feb 2005
Chapter/Region: South East
Location: Micro aggression turnt
Default

awesome project!
CatfaceType-R is offline   Reply With Quote
Old 10-12-2011, 02:59 PM   #6
Vdubtype1
Scooby Newbie
 
Member#: 297549
Join Date: Oct 2011
Default

Amazing project. I am doing a ej207 swap to a VW bug
Vdubtype1 is offline   Reply With Quote
Old 10-12-2011, 05:09 PM   #7
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default

Quote:
Originally Posted by Vdubtype1 View Post
Amazing project. I am doing a ej207 swap to a VW bug
nice, you using the suby transmission with the subarugears.com ring and pinion and conversion to 2wd? id live to try that some day. post a link to your build thread!
RonW is offline   Reply With Quote
Old 10-12-2011, 09:38 PM   #8
Vdubtype1
Scooby Newbie
 
Member#: 297549
Join Date: Oct 2011
Default

Quote:
Originally Posted by RonW

nice, you using the suby transmission with the subarugears.com ring and pinion and conversion to 2wd? id live to try that some day. post a link to your build thread!
I don't have a build thread
Vdubtype1 is offline   Reply With Quote
Old 10-14-2011, 06:30 PM   #9
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default

Quote:
Originally Posted by Vdubtype1 View Post
I don't have a build thread
well...start one
RonW is offline   Reply With Quote
Old 10-14-2011, 07:01 PM   #10
Badler
Scooby Guru
 
Member#: 133597
Join Date: Nov 2006
Chapter/Region: SCIC
Location: Orange
Default

Ed@EQ is a very good tuner. He's well known around these parts. I would have the utmost confidence in his abilities.
Badler is offline   Reply With Quote
Old 10-12-2011, 05:07 PM   #11
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default

thanks guys. ive got an EL header to cut up and twins scroll flange to weld to it to relocate the turbo, a down pipe to cut up with a jdm twin scroll flange to convert it, chassis wiring plugs to connect to the engine wiring harness as well as a MAF plug and the 5 ecu plugs on the way. I started fab work on the motor mount to use the stock location with N Gruppe mounts but am still debating on best methods. i'll post up some preliminary shots later tonight. with all the parts coming in, this should keep me busy for a while.

oh, i found a tuner here in the bay area that has experience with JDM ecu's and spec c motors, anyone have experience with Ed at http://www.eqtuning.com/ in Fairfax? spoke to him and he uses open tune load the tune. I've got a fair bit of background with tuning w megasquirt (ms3/ms3x full sequential fuel and spark using tunerstudio VELive) but am not familiar with tuners around here.
RonW is offline   Reply With Quote
Old 10-12-2011, 06:30 PM   #12
Vdubtype1
Scooby Newbie
 
Member#: 297549
Join Date: Oct 2011
Default

Yes I'm using the Subarugears kit. I had nothing but problems with type 1 trans and porsche boxes are expensive. I am using the 5mt shortened.

I know most of you had problems with the 5mt but I will just be powering 2 wheels. Wheel spin will be my problem

It will be a autocross car.

I will post pictures shortly. New to this forum.
Vdubtype1 is offline   Reply With Quote
Old 10-12-2011, 07:10 PM   #13
WR Boxer
Scooby Newbie
 
Member#: 171395
Join Date: Feb 2008
Chapter/Region: NWIC
Location: Corvallis, OR
Vehicle:
2004 STi
Java Black Pearl

Default

I just noticed, is this really an EJ207? '05 STi's had the EJ257...
WR Boxer is offline   Reply With Quote
Old 10-12-2011, 07:57 PM   #14
Zefy
Scooby Specialist
 
Member#: 105104
Join Date: Jan 2006
Chapter/Region: VIC
Location: Coquitlam, BC, Canada
Vehicle:
1979 BRAT / 01 RSTI
99 2.5TS (DEAD)

Default

Quote:
Originally Posted by WR Boxer View Post
I just noticed, is this really an EJ207? '05 STi's had the EJ257...
in japan they are the ej207 and it's a spec-c so not a 257.

Sweet build! I really want to see how this turns out.
Zefy is offline   Reply With Quote
Old 10-20-2011, 03:17 AM   #15
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default

well, away for the weekend to laguna seca and crewing for my friend so no progress but here's a vid

http://www.youtube.com/watch?v=gJluUYo_Mgo


i did start diving in to the wiring. started with nearly full harness with the fuse block cut out. pulling everything i don't need

RonW is offline   Reply With Quote
Old 10-20-2011, 11:27 AM   #16
O.C.D.
Scooby Specialist
 
Member#: 19640
Join Date: Jun 2002
Chapter/Region: RMIC
Location: Colorful CO
Vehicle:
2003 WRX Sedan
WRB

Default

Any shots of the car please? Love the build and the idea. I assume this will only be a rear wheel drive, right?
O.C.D. is offline   Reply With Quote
Old 10-20-2011, 11:55 AM   #17
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default

Yep, rear wheel drive. Here are a few shots taken last year for a book on early porsche hot rods





RonW is offline   Reply With Quote
Old 10-20-2011, 12:06 PM   #18
NITROS
Scooby Specialist
 
Member#: 41561
Join Date: Aug 2003
Chapter/Region: MWSOC
Location: Chicago
Vehicle:
04 GT3076 2.1
Stroker = Broken 3rd

Default

How does the clutch hook up with that adapter plate?
NITROS is offline   Reply With Quote
Old 10-20-2011, 12:11 PM   #19
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default

plan is to use an adapter to go between motor and stock porsche 215mm flywheel so stock parts can be used. there is however an conversion flywheel but the adapter would be better i think.
RonW is offline   Reply With Quote
Old 10-20-2011, 03:24 PM   #20
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
19 GLA45 AMG
C63 AMG

Default

where would the radiator be, with the porsche being OEM aircooled?
Vlad is offline   Reply With Quote
Old 10-20-2011, 03:58 PM   #21
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default

twin custom radiators behind each head light similar to how a boxer or 996 is set up. wish i could run those radiators but i dont have that much space up there. cooling lines will be run thru the side heating ducts (if you know 911's you'll know what i am referencing) on one side over the front wheel arches to one rad then out to the other side to the other rad then back via the other side heating duct to the motor. should be pretty clean and no cutting required!
RonW is offline   Reply With Quote
Old 01-18-2016, 05:04 PM   #22
ducs
Scooby Newbie
 
Member#: 438395
Join Date: Jan 2016
Default 77 911S 851 widebody

Quote:
Originally Posted by RonW View Post
twin custom radiators behind each head light similar to how a boxer or 996 is set up. wish i could run those radiators but i dont have that much space up there. cooling lines will be run thru the side heating ducts (if you know 911's you'll know what i am referencing) on one side over the front wheel arches to one rad then out to the other side to the other rad then back via the other side heating duct to the motor. should be pretty clean and no cutting required!
Great thread, I have an 07 Rally 2.5 STI engine in my 1977 Porsche 911S 851 widebody,was wondering about what the exhaust issues are,currently just using an open exhaust. The car came with the engine installed and mated to the Porsche Tranny as the 2.7 engine was blown. Tks Ducs

Last edited by ducs; 01-18-2016 at 05:09 PM. Reason: adding information
ducs is offline   Reply With Quote
Old 01-18-2016, 07:02 PM   #23
RonW
Scooby Newbie
 
Member#: 103663
Join Date: Dec 2005
Location: S.F Bay Area
Vehicle:
1968 Porsche 912
STi v8 Spec-C conversion

Default

Quote:
Originally Posted by ducs View Post
Great thread, I have an 07 Rally 2.5 STI engine in my 1977 Porsche 911S 851 widebody,was wondering about what the exhaust issues are,currently just using an open exhaust. The car came with the engine installed and mated to the Porsche Tranny as the 2.7 engine was blown. Tks Ducs
Hey Ducs,
thanks for the kind words.
Exhaust is likely going to need to be custom. Stock location is not going to work without having to hack things up and do some majoy mods. You will first have to figure out your desired turbo location. once there, you'll need to build a custom header/collector/up pipe to the turbo and then the down pipe to some small muffler. I've seen it done a few different ways but all will have to be custom. Once this is done, you'll still need to figure out the cold side to and intercooler and into the throttle body. Wish we could use the stock location but the drives side shock is right there and in the way.

best of luck!
RonW is offline   Reply With Quote
Old 10-20-2011, 05:43 PM   #24
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
19 GLA45 AMG
C63 AMG

Default

I had heating tubes in a Citroen air cooled boxer engine, I know how they work.
Nice project, lightweight too.

Last edited by Vlad; 10-20-2011 at 06:02 PM.
Vlad is offline   Reply With Quote
Old 10-20-2011, 10:46 PM   #25
Vdubtype1
Scooby Newbie
 
Member#: 297549
Join Date: Oct 2011
Default

What size of radiators are you using? And what size of tube going up front? I have done a similar set up in a type 1 bug. Using two gsxr 1000 rads in front fenders. Directing air from the small lower ports in bottom of fender and from directing air from underneath. So far no problems I live in Canada so I do have a colder climate. The stock sit rad is fairly large. I had doubts on my set up. I will try posting pictures.
Vdubtype1 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
- 2005 STi - 352whp / 400 wtq - 18G on Meth - worksti Proven Power Bragging 68 06-04-2010 12:28 AM
FS:CT - 2005 sti doors, interior, 2005 wrx seats Ctracer911 Complete Car Part-Out 16 06-20-2009 07:42 PM
NJ - 2005 STI - Metalic gray, HKS exhaust, Not abused or raced, MINT - $20500 rustyvegas Private Vehicle 'For Sale' Classifieds 17 09-24-2008 11:15 AM
FS - 2005 STi - White/Gold - SLC ibis RMIC Private Classifieds 5 04-13-2006 12:39 PM
FS - 2005 STi - gauging interest UncleMeat Mid West Subaru Owners Club Forum -- MWSOC 12 09-04-2005 12:52 PM

All times are GMT -4. The time now is 08:51 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.