Welcome to the North American Subaru Impreza Owners Club Wednesday December 13, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo)

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. 
Thread Tools Display Modes
Old 04-16-2005, 07:12 AM   #1
Wylde Horses
Scooby Specialist
Member#: 61255
Join Date: May 2004
Chapter/Region: VIC
Location: Port Coquitlam, BC
2002 WRX
dirty silver

Default How do you recommend I deal with shrinkage...

...of my crucial racing copper exhaust gaskets? (And get your minds out of the gutter )

I just started working on installing my uppipe/downpipe tonight - the stock DP is ready to come out, all the bolts are loose, and it's just the turbo side of the UP that still needs to be unbolted. In the other thread about copper gasket shrinkage, someone recommended that the car be heat cycled after the gaskets have been installed, the retorque all the bolts. I'm just wondering if there is a fast and dirty way to do this? Right now I'm thinking I'll have to install the uppipe first, put the exhaust together, less the heatshields, toss the IC and airbox back in, run the car for a while, then take it all apart again to tighten up the UP bolts, then possibley heat cycle them one additional time and again resnug the bolts. Then do the same with the DP. It just seems really involved - I'll be pulling the IC out 4 more times (twice for the UP, twice for the DP). I'm assuming the car can't run without the MAF, even though it has an air pressure sensor as well, otherwise I would leave the airbox and IC off, and just run the engine sucking air through the TB...

Any tips that will speed up the process will be appreciated. And lets please not make this thread a copper vs. OEM debate, it doesn't matter which one you think is better, I'm dealing with the copper gaskets.
* Registered users of the site do not see these ads.
Wylde Horses is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 04-16-2005, 07:16 AM   #2
Uncle Scotty
*** Banned ***
Member#: 16200
Join Date: Mar 2002
OK buy Nates beans


Pick another day----in a week or so.....and just deal with it....if you notch the lower heatshield so you can just unbolt it without ******* with the o2 sensor, your life will be MUCH easier....and the upper HS just needs the 2 bolts that bolt to the bracket that bolts to the 2 turbo-DP bolts...no huhu.
Uncle Scotty is offline   Reply With Quote
Old 04-16-2005, 08:32 AM   #3
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
2002 Impreza WRX


I'd recommend you torque up the gaskets as instructed by Crucial Racing, and let things set for a while, ( like go grab a sandwich or change the oil etc. ), come back and re-check the torque. Put things back on, so you can fire the engine, and start it up, and drive the car around the block a couple of times. Then let it cool a while, then take it out for another short drive --- a couple miles out and back.

Let it cool enough to work on it and then do the final torque. I usually work this sort of things around a couple simple errands I have to do anyway, so the heat cycles are not wasted time. A run to the grocery store, or a trip to the gas station is all it takes to get the exhaust system up to full temp.

That way you only have to do it once, but the gasket see's 2 heat cycles.

If you plan it so you do the first heat cycle in the evening let the car cool over night and then do the second drive first thing in the morning that would be ideal.

It all depends on how rushed for time you are.

Then Like Scotty says slide under the car in a day or two and check a couple of the bolts that are easiest to reach. If they are still tight your probably good. If they are a bit loose you know you need to drop the heat shields and double check things.

hotrod is offline   Reply With Quote
Old 04-16-2005, 11:19 AM   #4
Scooby Guru
Member#: 60324
Join Date: Apr 2004
Location: soon to be somewhere else
1998 RS


How do you recommend I deal with shrinkage...

Stay out of the water!
hondaeater69 is offline   Reply With Quote
Old 04-16-2005, 12:40 PM   #5
Scooby Newbie
Member#: 70575
Join Date: Sep 2004
Location: Michigan
2005 WRX


FYI there is no need to take the MAF and Airbox out in order to do this. You are snugging bolts that re nowhere near these pieces. I didn't even take mine out to install my dp and up. That will save ya at least 15 minutes roundtrip.

If I were you I would just torque all the bolts down real nice and snug, then run it for about 50 miles, then take off your intercooler and check to see if the bolts are still as tight. If the ones in front that are easy to access are still tight, chances are they will all be tight. That will save you alot of time. Also make sure you trim up the Heatshield on the manifold so you don't have take out the O2 sensor to get that off. Will save ya some time!
Boonie is offline   Reply With Quote
Old 04-16-2005, 12:47 PM   #6
Scooby Specialist
Member#: 42979
Join Date: Sep 2003
Location: houston tx
03 wrx
blizzzack stage IV


blackie is offline   Reply With Quote

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
How do current college grads deal with school loans? kbcr3 Off-Topic 77 04-25-2006 08:27 PM
How do you autox guys deal with our WRX trannies? baileypicks24 Motorsports 20 06-20-2005 07:07 PM
How do you roll your tobacco with Zig-Zags? Eric SS Off-Topic 21 02-08-2004 01:15 AM
How do you like to sleep with your partner? Capt Crunch Off-Topic 50 05-06-2003 05:59 PM
how do you have an argument with a woman? mr_disco Off-Topic 24 10-09-2002 07:33 PM

All times are GMT -4. The time now is 01:00 AM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.