Welcome to the North American Subaru Impreza Owners Club Saturday March 30, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Built Motor Discussion

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 07-11-2006, 05:13 PM   #1
dpalo81
Scooby Newbie
 
Member#: 106888
Join Date: Feb 2006
Default New Build HELP?????

I am hoping to do a sti shortblock with a stock wrx head, green turbo, PE 750 injectors and Perrin fuel rail, clutchmaster stage 3 clutch and flywheel all controled by a reflash and then upgrade to an AEM. My question is can a 06 sti block work? I am not sure if the short block is the same as i have seen that alot of people use the short blocks from the older model years 04-05? but i am not sure if it has change and that everything will not line up without conversion?
* Registered users of the site do not see these ads.
dpalo81 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 07-11-2006, 06:39 PM   #2
SubeTek
Scooby Specialist
 
Member#: 1714
Join Date: Jun 2000
Chapter/Region: RMIC
Location: Arvada,Co
Vehicle:
1999 RS-T COUPE
Black

Default

your heads will bolt up to the 06 block-no problems.
SubeTek is offline   Reply With Quote
Old 07-12-2006, 12:03 PM   #3
dpalo81
Scooby Newbie
 
Member#: 106888
Join Date: Feb 2006
Default

Come on guys i am sure that more than one person has some facts why it will definitely fit or not i need to purchase this SB soon as i dont want to loose out on it but i just want to make sure that it will fit.
dpalo81 is offline   Reply With Quote
Old 07-12-2006, 02:05 PM   #4
SubeTek
Scooby Specialist
 
Member#: 1714
Join Date: Jun 2000
Chapter/Region: RMIC
Location: Arvada,Co
Vehicle:
1999 RS-T COUPE
Black

Default

There's really no more info needed-the shortblock & your heads will bolt up just fine.

Bret
Subaru Senior Master Tech (20 years experience)
SubeTek is offline   Reply With Quote
Old 07-12-2006, 06:44 PM   #5
Gruppe-S
Former Vendor
 
Member#: 23216
Join Date: Aug 2002
Location: Lake Forest, CA | 949-457-1234
Vehicle:
2006 949-457-1234
949-457-1234

Default

Quote:
Originally Posted by dpalo81
I am hoping to do a sti shortblock with a stock wrx head, green turbo, PE 750 injectors and Perrin fuel rail, clutchmaster stage 3 clutch and flywheel all controled by a reflash and then upgrade to an AEM. My question is can a 06 sti block work? I am not sure if the short block is the same as i have seen that alot of people use the short blocks from the older model years 04-05? but i am not sure if it has change and that everything will not line up without conversion?
Hello,

You might want to take a look at what other people are doing on this board. This hybrid is a very popular combo and we've installed and tuned around 10 of these.

As Bret already said, this shortblock will definitely work with your heads. If I could make a few suggestions about your setup, I'd skip the Perrin fuel rails because they're not necessary unless you're pushing really really big power. People will tell you that this will help balance out the lean condition in cylinder #3 but we have never had any problems with this and can push 500+ dynojet WHP on the stock fuel rails.

Next, I'd go with something like the Helix 264 cams and valvetrain because the flow of the stock WRX heads will limit the potential of the 2.5L block noticeably. You might find this thread interesting:

http://forums.nasioc.com/forums/show...0&postcount=45

Also, PE doesn't make 750 injectors so I'm guessing you meant the Pe 650s or 800s? For the Green, you could go with the 650s but I'd actually recommend the Helix 660s since they're basically identical to the Helixes but they're much cheaper.

Finally, remember that you'll be producing massive amounts of torque with this setup and going to a stiffer clutch will transfer a lot more shock to your transmission. This will in turn make it more likely to go out. I would seriously start considering a 6 spd swap or RA gears at the very least. I recommend you keep your stock clutch if you don't plan on upgrading your tranny for the time being. If you have any questions, feel free to contact us.

Thanks,

Geoff

Gruppe-S is offline   Reply With Quote
Old 07-12-2006, 09:30 PM   #6
mick_the_ginge
Citizen Mick
 
Member#: 27646
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
2003 Sleeved 2.5
Oil Dry Sump Goodness

Default

Quote:
Originally Posted by Gruppe-S
Hello,

Also, PE doesn't make 750 injectors so I'm guessing you meant the Pe 650s or 800s? For the Green, you could go with the 650s but I'd actually recommend the Helix 660s since they're basically identical to the Helixes but they're much cheaper.


Not to mention that Gruppe-S no longer stocks PE's...........

- On a side note I would suggest that you drop the compression using a thicker head gasket. Yes, yes I know many on this forum will say that you increase quench leading to detonation but ask them if they have actually done it. I dropped the compression on my block builds and have seen no ill effects.
mick_the_ginge is offline   Reply With Quote
Old 07-13-2006, 12:25 PM   #7
dpalo81
Scooby Newbie
 
Member#: 106888
Join Date: Feb 2006
Default

Thanks, for the information from everyone. i would like however to know Gruppe-S what turbo and injectors that you would recommend for this set up seeing that i want it to be a daily driver. i was thinking of using a FP Green and also do you sell the recommendation for the valve tran and cams if so let me know how much?

1.With the cars that you guys have done what was Engine management used?
2. what are the ball park figures (HP) were the cars done on a conservative setups?
dpalo81 is offline   Reply With Quote
Old 07-13-2006, 04:34 PM   #8
Gruppe-S
Former Vendor
 
Member#: 23216
Join Date: Aug 2002
Location: Lake Forest, CA | 949-457-1234
Vehicle:
2006 949-457-1234
949-457-1234

Default

Quote:
Originally Posted by dpalo81
Thanks, for the information from everyone. i would like however to know Gruppe-S what turbo and injectors that you would recommend for this set up seeing that i want it to be a daily driver. i was thinking of using a FP Green and also do you sell the recommendation for the valve tran and cams if so let me know how much?

1.With the cars that you guys have done what was Engine management used?
2. what are the ball park figures (HP) were the cars done on a conservative setups?
Don't mention it. The FP Green is a great turbo for a daily driver with a 2.5l block but again, it would really benefit from cams. You might also want to take a look at the Helix RR500 that's going to be released shortly. For injectors, I would recommend the Helix 660s. We sell the Helix cams and valve train for $999 shipped. The valve train isn't 100% necessary but is highly recommended. If you just go for the cams, the price is $529 shipped.

1. Our preferred method of EM is the Cobb AP Protune. It has complete control over every parameter of the ECU and allows multiple map capability.

2. With stock heads and a Green on 91, I'd excpect you to make around 380 CHP. With Helix cams, I'd expect that pacakge to make about 410 CHP.

Thanks,

Geoff
Gruppe-S is offline   Reply With Quote
Old 07-13-2006, 04:51 PM   #9
Ace009
Scooby Specialist
 
Member#: 70353
Join Date: Sep 2004
Chapter/Region: MWSOC
Location: Chicago
Vehicle:
2004 WRX
PSM

Default

Quote:
Originally Posted by Gruppe-S
2. With stock heads and a Green on 91, I'd excpect you to make around 380 CHP. With Helix cams, I'd expect that pacakge to make about 410 CHP.

Thanks,

Geoff
So the power difference between using just plain stock WRX heads and same heads w/ Helix cams is only 30CHP?

From what I've read on here, some people make it seem like there is a huge difference.
Ace009 is offline   Reply With Quote
Old 07-14-2006, 03:17 PM   #10
Gruppe-S
Former Vendor
 
Member#: 23216
Join Date: Aug 2002
Location: Lake Forest, CA | 949-457-1234
Vehicle:
2006 949-457-1234
949-457-1234

Default

I'd say that is a pretty big difference when you consider the $ spent per HP gained ratio. Plus the gains are through a very large portion of the RPM band. Also, remember that these gains will only become more pronouced the more power you make (the more air you move through the motor, which is an air pump, the more gains you will see from cams (or most any mod for that matter)).

-Geoff
Gruppe-S is offline   Reply With Quote
Old 07-18-2006, 08:25 PM   #11
Judge
Scooby Specialist
 
Member#: 15380
Join Date: Feb 2002
Location: Michigan
Vehicle:
2002 WRX
White

Default

I have been playing with horsepower for a long time and I have to say this: 30HP for a grand in a car is not that impressive to me (if this is just a peak number). WHat do they do for the overall graph? How does the torque and HP look from idle to rev limit? 30hp for a grand on my Yamaha R1 I would jump on it....but in a car.....not so quickly...unless it did things other than peak numbers. Peak numbers mean nothing to me as a street car....table top torque curve and throttle response....now we are talking.
Judge is offline   Reply With Quote
Old 07-18-2006, 08:32 PM   #12
Jeremy@Cobb
Scooby Newbie
 
Member#: 106514
Join Date: Feb 2006
Default

30hp from cams is good, but more importantly good cams that fit your application will allow you to hold power out closer to factory redline.. and some cam and cylinder head porting options will allow you to hold power even further.
So I agree with Geoff, it is worth the money alone.. having a broad powerband.
(of course with the correct cams for your application)
Jeremy@Cobb is offline   Reply With Quote
Old 07-18-2006, 08:39 PM   #13
Judge
Scooby Specialist
 
Member#: 15380
Join Date: Feb 2002
Location: Michigan
Vehicle:
2002 WRX
White

Default

OK...I am at work and typed that quickly so what I am asking is do those cams provide that for the engine then? Newermind the peak number....does it carry numbers out and is the torque curve flatter?
Judge is offline   Reply With Quote
Old 07-18-2006, 09:25 PM   #14
InfamousDX
*** Banned ***
 
Member#: 25413
Join Date: Sep 2002
Chapter/Region: Tri-State
Location: North NJ
Default

Quote:
Originally Posted by Judge
OK...I am at work and typed that quickly so what I am asking is do those cams provide that for the engine then? Newermind the peak number....does it carry numbers out and is the torque curve flatter?
http://forums.nasioc.com/forums/show....php?t=1018404

Scroll down for sonic rx's numbers. He did the helix cams/valvetrain I believe. If those were stock cams with the SR55 turbo, I'm willing to bet the power dropoff would be horrendous.
InfamousDX is offline   Reply With Quote
Old 07-18-2006, 09:31 PM   #15
Judge
Scooby Specialist
 
Member#: 15380
Join Date: Feb 2002
Location: Michigan
Vehicle:
2002 WRX
White

Default

Quote:
Originally Posted by InfamousDX
http://forums.nasioc.com/forums/show....php?t=1018404

Scroll down for sonic rx's numbers. He did the helix cams/valvetrain I believe. If those were stock cams with the SR55 turbo, I'm willing to bet the power dropoff would be horrendous.

Now that is beautiful...thanks for the info....they look like they definately are worth it. Asking so many questions because I am getting ready to replace an engine in my 02 WRX....
Judge 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
Hey guys im new here, new sti owner, and new build. e30 gangsta Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 8 06-01-2008 01:42 AM
Need some computer building help. Guru Imakuni Off-Topic 15 05-08-2005 03:40 AM
Computer Building Help/Insight D'sScooby Off-Topic 27 02-12-2005 06:07 PM
Webpage building help needed. easy Q scarywoody Off-Topic 5 09-02-2004 08:24 PM
junkyard turbo build help... 9 Normally Aspirated with bolt-on Forced Induction Powertrain 8 07-24-2003 03:11 PM

All times are GMT -4. The time now is 12:25 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.