Welcome to the North American Subaru Impreza Owners Club Monday April 21, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

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.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 10-24-2004, 09:57 PM   #1
subiedreamin
Scooby Newbie
 
Member#: 20407
Join Date: Jun 2002
Chapter/Region: MAIC
Location: Wilmington Delaware
Vehicle:
1999 RS w/ V7 STI
White

Default cobb stage 3

I recently came into some money and I was thinking of doing the stage 3 route on on my 99 rs. I know there are tons of threads about the price differences between an engine swap and aftermarket f/i but i'm wondering that if i go that whole route with the cams, heads, and maybe add the valvetrain, would I be getting close to the limit of the bottom end?

At what point hp wise would i really need to think about a new crank/pistons/rods?

I love the way a n/a car drives and I think i would like to stay that way but it looks like it starts getting way more cot efective to just look at droping a sti motor in and being done with it.
* Registered users of the site do not see these ads.
subiedreamin is offline   Reply With Quote
Old 10-25-2004, 12:54 AM   #2
dkl
Scooby Newbie
 
Member#: 63096
Join Date: May 2004
Location: Portland, OR
Vehicle:
1998 2.5RS
Green

Default

I would say check out the AVO turbo kit. You would be able to hang with stock STi's, and lag is virtually non-existant (the spool is at ~2000rpm). Check out RalliTek to confirm price and all. They know what they are talking about. I've talked to a number of people who have said that as nice as it is to have bragging rights w/ an NA car, it's not worth the money and effort. As for your original question, the stock block is pretty tough. I know an NA guy who has a full build and went through 12 bottles of nitrous before popping his block.
dkl is offline   Reply With Quote
Old 10-25-2004, 02:40 AM   #3
Diabolical1 CC
*** Banned ***
 
Member#: 59897
Join Date: Apr 2004
Default

shouldn't this be in a turbo thread?
Diabolical1 CC is offline   Reply With Quote
Old 10-25-2004, 08:02 AM   #4
ImprezaVA
Scooby Specialist
 
Member#: 32846
Join Date: Feb 2003
Chapter/Region: MAIC
Location: Elkton, VA
Vehicle:
1998 Impreza L-SOLD
Arcadia Green

Post

Quote:
shouldn't this be in a turbo thread?
No, I don't think he wants to go turbo, initially anyway. I have an opinion, which adds nothing to this post, but I have to bring up the open deck block issue yet once again. Sure you can do it (turbo), some have had a 2.5 RS turbo set-up for awhile, yet, I'd swap.

USDM EJ20 Swap Instructions
Conversions FAQ
EJ20 Swap Info
WRX swap into '99 RS

-Charles-
ImprezaVA is offline   Reply With Quote
Old 10-25-2004, 06:27 PM   #5
Caplin 2.5
Scooby Specialist
 
Member#: 71203
Join Date: Sep 2004
Location: SoCaL
Vehicle:
2005 2.5rs
Crystal Gray Metallic

Default

You could replace the stock cams, pulleys, and etc. check out www.xcceleration.com in the rs section, they got a pretty good package that puts down 80 wheel hp but it is pretty damn expensive.
Caplin 2.5 is offline   Reply With Quote
Old 10-25-2004, 07:27 PM   #6
subiedreamin
Scooby Newbie
 
Member#: 20407
Join Date: Jun 2002
Chapter/Region: MAIC
Location: Wilmington Delaware
Vehicle:
1999 RS w/ V7 STI
White

Default

Quote:
Originally Posted by Caplin 2.5
You could replace the stock cams, pulleys, and etc. check out www.xcceleration.com in the rs section, they got a pretty good package that puts down 80 wheel hp but it is pretty damn expensive.
Yea i know i 'can' do that but the way i feel is if i have to pull the engine to do the cams migt as well spring for the heads and maybe the valves/springs. I am just thinking of how close to the limit of the rest of the stock internals you know.
subiedreamin is offline   Reply With Quote
Old 10-25-2004, 08:00 PM   #7
Caplin 2.5
Scooby Specialist
 
Member#: 71203
Join Date: Sep 2004
Location: SoCaL
Vehicle:
2005 2.5rs
Crystal Gray Metallic

Default

if you don't want to take the engine out you could always go with more simple upgrades like , Cold Air Intake, exhaust, removing cats, headers, and maybe an ECU.
Caplin 2.5 is offline   Reply With Quote
Old 10-26-2004, 12:38 AM   #8
Section 8
Scooby Specialist
 
Member#: 821
Join Date: Jan 2000
Chapter/Region: MWSOC
Location: "Like a hyena you are..."
Default

Only if you decide to raise the redline (or get some more agressive cams, TWE recomends that you replace the springs with their lumpier cams).

cheeRS,

Greg
Section 8 is offline   Reply With Quote
Old 10-26-2004, 12:39 AM   #9
Section 8
Scooby Specialist
 
Member#: 821
Join Date: Jan 2000
Chapter/Region: MWSOC
Location: "Like a hyena you are..."
Default

Or go crazy with t3h NAAAAAAAWS.
Section 8 is offline   Reply With Quote
Old 10-26-2004, 11:10 AM   #10
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

Quote:
Originally Posted by Caplin 2.5
You could replace the stock cams, pulleys, and etc. check out www.xcceleration.com in the rs section, they got a pretty good package that puts down 80 wheel hp but it is pretty damn expensive.
You do realize that those guys are selling TWE parts, right? Buy them from TWE or Rallitek. I hear nothing but questionable things about xcceleration...
Matt Monson is offline   Reply With Quote
Old 10-26-2004, 11:49 AM   #11
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

p.s. better order them now since Cobb heads generally take 4-6 months...
Matt Monson 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
2006 WRX Cobb stage 3 (VF39+STI TMIC) 12.3 quarter mile. Bala Proven Power Bragging 139 10-06-2006 01:28 AM
INFO: Which will come first, Cobb Stage 3 or Prodrive Stage 4 Bad Dogg Factory 2.0L Turbo Powertrain 6 05-25-2005 10:52 PM
alternative to cobb stage 3 block and heads? Szm426 Factory 2.0L Turbo Powertrain 10 09-10-2002 02:49 PM
Cobb Stage 3 Suspension Testing downeyer Brakes, Steering & Suspension 10 05-05-2002 06:19 PM
cobb stage 3 rupteur7000 Normally Aspirated Powertrain 0 04-30-2002 01:28 PM


All times are GMT -4. The time now is 01:01 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.