Welcome to the North American Subaru Impreza Owners Club Saturday April 19, 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 > 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.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 09-07-2007, 11:30 PM   #1
Crazyhippy
Scooby Newbie
 
Member#: 104881
Join Date: Jan 2006
Location: Fenix, AZ
Vehicle:
1970 stg7 Porsche914

Default Will It work? 205 crank and rods in a 257 block

Just like the title says.. Can I install a 205 rotating assembly in a 257 block, w/ stock 257 pistons?

I spun a bearing in my Hybrid, and need to get the car running asap. I know i will have to re-build w/ the 257 crank and rods when they get back

Of course this thing might be so rev happy i'll keep it
* Registered users of the site do not see these ads.
Crazyhippy is offline   Reply With Quote
Old 09-07-2007, 11:47 PM   #2
Crazyhippy
Scooby Newbie
 
Member#: 104881
Join Date: Jan 2006
Location: Fenix, AZ
Vehicle:
1970 stg7 Porsche914

Default

It looks like the 257 pistons have a slightly higher pin height, so i'll end up losing a little bit of compression... No biggy though
Crazyhippy is offline   Reply With Quote
Old 09-07-2007, 11:53 PM   #3
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: 3MI Racing LLC
Vehicle:
96 bastard child
search FIRST, then PM!!!

Default

you will loose a very noticable amount of CR and quench height will be horrid...shoot me a PM, you have a few options for the set up you are talking about and I might have an sti rotating assembly for sale.
Homemade WRX is offline   Reply With Quote
Old 09-08-2007, 12:29 AM   #4
Crazyhippy
Scooby Newbie
 
Member#: 104881
Join Date: Jan 2006
Location: Fenix, AZ
Vehicle:
1970 stg7 Porsche914

Default

Answered my own question... It will not work. The 205 Rods are "square cut" on the small end, where as the 257 rod and piston are both cut on an angle @ the small end. The 205 rod will not fit the 257 piston stock...

Drawingboard, here i come.
Crazyhippy is offline   Reply With Quote
Old 09-08-2007, 12:39 AM   #5
reddevil
Scooby Guru
 
Member#: 64673
Join Date: Jun 2004
Chapter/Region: NWIC
Location: portland
Vehicle:
1990 Legacy wagon
goes 12.387 @ 116.5

Default

/\ WRONG!

You can grind/mill the rods to fit the STI pistons.

I did this build. I ran 30 psi. I did a 12.5 @ 112 with slipping clutch....

I used a phase 1 2.5 block with 2.2 turbo crank, the LONG rods, and stock STI pistons.
reddevil 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
JDM B4 heads on EJ20G closed deck block-will it work great? renhoek Built Motor Discussion 2 08-17-2009 01:19 AM
Parts swap needed: My stock 2.5 crank and rods for your stock 2.0 crank and rods. HamFist RMIC Private Classifieds 4 04-17-2009 10:10 PM
How does a Cobb Accessport work and will it work with my parts? Twin_Cities_WRX General Community 5 03-08-2009 01:39 AM
FS CO: EJ22T short block, crank, and rods legacymaximus Engine/Power/Exhaust 12 02-24-2007 05:00 PM
STi Crank and rods in wrx SQB SNX Factory 2.0L Turbo Powertrain 2 11-14-2005 04:53 PM


All times are GMT -4. The time now is 04:13 AM.


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.