|
|
|
|
Thread Tools | Display Modes |
10-03-2007, 01:13 PM | #1 |
Scooby Specialist
Member#: 94752
Join Date: Aug 2005
Chapter/Region:
MWSOC
Location: Jeffersonville, Indiana
Vehicle:2003 wrx wrb |
just ordered some STi heads to go wiith my EJ257 block...what else do I need?
I have been driving my hybrid (ej257 block & 2.0 liter heads) bugeye for about 8 months now. I went this route because my wrx engine broke and I needed to rebuild the 2.0 or just go with a 2.5. I have been concerned with issues relating to the compression and overall of having an engine that wasn't engineered by Subaru. Well I just ordered a set of STi heads and I'm hoping that it will give me piece of mind. What else will I need other than gaskets to make this work? How should I control AVCS?
I have contemplated getting AEM EMS or Hydra if I'm able to sell my AP, wrx heads and a couple of other things I have laying around. I have heard that I can disable AVCS, but I'm not sure that works with my longterm plans. What else will I need or need to do to make sure that I won't blow up another engine and that I will have good factory like power? Thanks for the help.
* Registered users of the site do not see these ads.
|
10-03-2007, 02:03 PM | #2 |
Scooby Specialist
Member#: 56791
Join Date: Mar 2004
Chapter/Region:
South East
Location: Charlotte, NC
Vehicle:06 OBS |
Did you order all the parts for the avcs? Even if you don't you avcs, you still need to route to oil for the avcs. I just went through this with a set of cosworth heads on a wrx.
|
10-03-2007, 02:07 PM | #3 |
Scooby Specialist
Member#: 94752
Join Date: Aug 2005
Chapter/Region:
MWSOC
Location: Jeffersonville, Indiana
Vehicle:2003 wrx wrb |
All that I have ordered so far are a complete set of STi heads (complete as in cams, shims, buckets, valves). Can I use the throttle body that I have? Will my PE 650 injectors work?
|
10-03-2007, 02:11 PM | #4 |
Scooby Specialist
Member#: 56791
Join Date: Mar 2004
Chapter/Region:
South East
Location: Charlotte, NC
Vehicle:06 OBS |
I take it the heads are used then? Just make sure all parts are there. You can use your 2.0l intake and TB and injectors. The sti have different fuel rails and side feed injectors.
|
10-03-2007, 03:31 PM | #5 |
Scooby Guru
Member#: 5218
Join Date: Mar 2001
Chapter/Region:
MWSOC
Location: SAUL'S Motorsports
Vehicle:96L Most Over- Developed Beater |
Won't you be re-using your EJ20 cam gears? That will eliminate the AVCS anyway, no?
Jay |
10-04-2007, 10:20 AM | #6 |
Scooby Specialist
Member#: 94752
Join Date: Aug 2005
Chapter/Region:
MWSOC
Location: Jeffersonville, Indiana
Vehicle:2003 wrx wrb |
I'm not sure. I'm trying to piece everything together and I'm on a budget. That budget being as much as my wife will let me get away with. I'm more than a little confused about how to piece it all together. I've heard that someone makes some wiring harnesses for this set up but I haven't been able to locate them yet. Thanks again for all of the help.
|
10-04-2007, 11:15 AM | #7 |
Scooby Specialist
Member#: 44351
Join Date: Sep 2003
Chapter/Region:
MWSOC
Location: Cincinnati, OH
Vehicle:2004 Mitsubishi Evo 701whp 9.91@146 |
The only issue I think you are going to have is going to be with the AVCS.
You need the AVCS solenoids, AVCS hard lines that are on the front of the heads and AVCS cam gears. Don't have one of these items and AVCS won't work. Don't have the hardlines and you will burn up the front cam bearing as thats where it gets it's oil...oh and you'll have a rather large oil leak. Don't have the solenoids and you will have a rather large oil leak. As for controlling the AVCS, the only way you will be able to do it is with a standalone ECU....Hydra or AEM. The stock WRX ECU can not be flashed to control the AVCS. You will then have to manually wire from the standalone to the AVCS solenoids as you don't have the wiring to run it in your car now. |
10-04-2007, 11:24 AM | #8 |
Scooby Specialist
Member#: 94752
Join Date: Aug 2005
Chapter/Region:
MWSOC
Location: Jeffersonville, Indiana
Vehicle:2003 wrx wrb |
That is an informative post. Hopefully Tristan at Fred Beans can hook me up with that stuff.
|
10-04-2007, 01:11 PM | #9 |
Scooby Specialist
Member#: 44351
Join Date: Sep 2003
Chapter/Region:
MWSOC
Location: Cincinnati, OH
Vehicle:2004 Mitsubishi Evo 701whp 9.91@146 |
Also, I'm not sure if the cam sensor pickups on the cams are different between the STI and the WRX. If they are, your stock WRX computer is going to have an issue with that. If you go standalone, it won't matter because you can configure the cam sensor for any type of pickup.
|
10-04-2007, 01:34 PM | #10 |
Scooby Newbie
Member#: 106665
Join Date: Feb 2006
Location: Hudson, OH
Vehicle:05 Buschur Powered Evo w/corn in da poop |
Did you also buy the STi cams? I cant remember if the cams come with the heads or they are seperate.
|
10-04-2007, 01:40 PM | #11 |
Scooby Specialist
Member#: 44351
Join Date: Sep 2003
Chapter/Region:
MWSOC
Location: Cincinnati, OH
Vehicle:2004 Mitsubishi Evo 701whp 9.91@146 |
When I priced out a set of heads from the dealership, I think the cams are seperate.
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Just ordered a Invidia Q300 Catback, What else do I need to hook it up? | STIStalker | Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) | 7 | 06-05-2010 02:01 AM |
Finally bought ej257 block, What else do i need ? | sgiord86 | Built Motor Discussion | 13 | 09-02-2009 04:44 PM |
Finally decided to go with the Blouch 18G, what else do I need to get? | lateralus1082 | Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) | 29 | 03-24-2009 06:49 PM |
Going to install mods what else do I need? | breathinez | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 7 | 06-09-2006 11:40 AM |
Selling My 04 Sti Springs To A 02-03 Wrx Owner...what Else Does He Need? | mpower22 | Brakes, Steering & Suspension | 2 | 07-23-2004 05:54 PM |