Welcome to the North American Subaru Impreza Owners Club Friday November 28, 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 12-10-2012, 05:11 PM   #1
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default Odd question: Timing Belt or Build Shortblock?

Right now I have an STi shortblock with stock internals at around 110k miles and I think I may be on borrowed time with the timing belt. With the current tune it dynod at 330whp and 320 torque which may be on the high end for stock internals so here is my question.

I have a new ej257 shortblock in my garage. Instead of doing the timing belt on my current engine would it be more cost efficient to build the new shortblock with stronger internals and swap that in with a new timing belt? My worry is that I will pay for the timing belt and risk something else happening because the shortblock already has high mileage.

Am I being paranoid and stupid?
GraverD is offline   Reply With Quote
Old 12-10-2012, 05:35 PM   #2
04ScoobyWtf
Scooby Specialist
 
Member#: 287974
Join Date: Jul 2011
Default

If the belt breaks you'll belt a valve and have to spend more on new heads. Install the shortblock with the new timing belt have the heads refreshed and call it a done deal. And you won't have to worry.
Just my .02
04ScoobyWtf is offline   Reply With Quote
Old 12-10-2012, 05:41 PM   #3
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

Quote:
Originally Posted by 04ScoobyWtf View Post
If the belt breaks you'll belt a valve and have to spend more on new heads. Install the shortblock with the new timing belt have the heads refreshed and call it a done deal. And you won't have to worry.
Just my .02
Thats exactly how I felt, now how much do I put into the new block?

Also does anyone know what an 100k mile ej257 shortblock with the internals would go for? I imagine I can probably cut a lot of the costs if I do a compression test and sell the old built shortblock.
GraverD is offline   Reply With Quote
Old 12-10-2012, 07:22 PM   #4
04ScoobyWtf
Scooby Specialist
 
Member#: 287974
Join Date: Jul 2011
Default

Get comp numbers but I'm guessing like 650-800 depending on compression
04ScoobyWtf is offline   Reply With Quote
Old 12-10-2012, 07:25 PM   #5
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

good to know, I will run a compression test before pulling it
GraverD is offline   Reply With Quote
Old 12-11-2012, 10:11 AM   #6
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

any other feedback? What would a job like this cost assuming I had the parts? Assembly, re-surfacing heads, swapping
GraverD is offline   Reply With Quote
Old 12-11-2012, 10:31 AM   #7
HinshawWRX
Medium Frank
Moderator
 
Member#: 140114
Join Date: Feb 2007
Chapter/Region: MAIC
Location: Common Sense, VA
Vehicle:
2014 Porsche
GT3 (Currently on Fire)

Default

I would base it more on compression numbers over that of miles on the motor. If you think you're living on borrowed time, do the timing belt. If you have the money then build a block.
HinshawWRX is offline   Reply With Quote
Old 12-11-2012, 10:47 AM   #8
Flat 4 Motorsport
NASIOC Vendor
 
Member#: 295846
Join Date: Sep 2011
Chapter/Region: MWSOC
Location: Crook County, Illinois
Vehicle:
WRX FP HTA GT3076R
Sexual Chocolate

Default

Do a leak down, and see what the overall health of the motor is.

Then go from there.

Honestly I would replace the t-belt and pulleys, if the numbers come back good.

No sense in tearing it apart if everything checks out. Unless you have disposable income.

My . 02

-Phil @ F4M
Flat 4 Motorsport is online now   Reply With Quote
Old 12-11-2012, 10:53 AM   #9
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

Thanks, after a good sleep and talk to the wife I came to the same conclusion. I am waiting to see the shops estimate and then I will do a leak down and compression test. If those come out ok I will just get the belt taken care of.

Thanks for all the input
GraverD is offline   Reply With Quote
Old 12-11-2012, 11:17 AM   #10
04ScoobyWtf
Scooby Specialist
 
Member#: 287974
Join Date: Jul 2011
Default

Alldata call for around 19 hours and 19 x 100 (labor hour) is 1900 in just labor and I'd say 300-500 on head refreshing gasket kit 250. Timing but 270. Misc oils and gaskets 200.

There's 3400 before the internals
04ScoobyWtf is offline   Reply With Quote
Old 12-30-2012, 09:37 PM   #11
Grippen
Scooby Specialist
 
Member#: 329712
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Virginia
Vehicle:
2005 Sti
Aspen White

Default

Uea thats crazy. Just do it yourself if you have any knowledge about it. If not search for meaty's thread!
Grippen is offline   Reply With Quote
Old 12-30-2012, 10:54 PM   #12
cowboy_Rob
Scooby Specialist
 
Member#: 194062
Join Date: Nov 2008
Chapter/Region: MAIC
Location: Camp Hill PA
Vehicle:
2003 Impreza WRX
PSM

Default

just do the timing belt. if you know someone with the right tools its not even an afternoon job
cowboy_Rob 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


All times are GMT -4. The time now is 05:07 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.