Welcome to the North American Subaru Impreza Owners Club Thursday March 28, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Subaru Models > Legacy Forum

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 11-16-2003, 11:22 PM   #1
ws6fiero
Scooby Newbie
 
Member#: 33067
Join Date: Feb 2003
Chapter/Region: MWSOC
Location: MI
Vehicle:
1998 Legacy Wagon
Spruce Pearl

Unhappy EJ22 w/ 112k has piston slap. How long will it last?

So yeah... I now know for sure that my EJ22 has piston slap. I know that this may be "acceptable" during warmup, but it is getting to the point where it takes a lot of warm-up to go away. Actually I think I can hear it faintly all the time.

So how long can I play this out? I'm not too eager to be swapping engines anytime soon. I know that this is supposed to cause minimal damage to the engine, but I don't think an engine with full blown metal to metal impacts is going to last forever.
* Registered users of the site do not see these ads.
ws6fiero is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 11-18-2003, 04:13 PM   #2
Hota
Scooby Newbie
 
Member#: 48742
Join Date: Nov 2003
Location: Boston
Vehicle:
2002 BMW M3
1997 Subaru Legacy

Thumbs up

Hi there,

Piston slap in modern engines is often caused by deposits on piston heads in emissions reducing engines that have a piston clearance of less than 1mm at top dead center. It likely is not caused by metal to metal impact.

It may be a little pricey for an additive (~$10), but the first thing I would do it add a bottle of Chevron Techron to your next fill up. It does wonders for removing deposits fuel injector AND piston head deposits. If possible, fill up with Chevron Supreme too.

Repeat if it still doesn't go away.

You should notice your piston slap disappearing and more power since your engine probably has been retarding the spark to compensate for the increased compression too.

Check this link out for more info:

http://www.chevron.com/prodserv/fuel...rgas/ch6.shtml
Hota is offline   Reply With Quote
Old 11-18-2003, 04:24 PM   #3
ws6fiero
Scooby Newbie
 
Member#: 33067
Join Date: Feb 2003
Chapter/Region: MWSOC
Location: MI
Vehicle:
1998 Legacy Wagon
Spruce Pearl

Default

Hmmm... that is an interesting thought. I have never heard anybody say that before. I might as well throw in some Techron anyway... the thing has enough miles to justify it and I'm always hearing people talk about how awesome it is. Plus my driving style is 95% grandma / 5% fast so that would contribute to carbon deposits.

I'll bump the thread when I get around to doing it. (if I can remember)
ws6fiero is offline   Reply With Quote
Old 11-18-2003, 09:37 PM   #4
DerFahrer
Scooby Specialist
 
Member#: 30727
Join Date: Dec 2002
Chapter/Region: South East
Location: Tampa
Default

Quote:
Originally posted by Hota
Piston slap in modern engines is often caused by deposits on piston heads in emissions reducing engines that have a piston clearance of less than 1mm at top dead center. It likely is not caused by metal to metal impact.
This is not correct at all. First off, I haven't heard of too many EJ22's having piston slap, but it's possible...

Piston slap in Subarus is when the piston skirts are too short, and the ring of the piston goes slightly below it at BDC. When the engine warms up, the skirt expands and the sound goes away. It does not really do any damage, this is correct... But no additive or any other "easy fix" will do anything about it. The only solution is to tear down the engine and replace the piston skirts...
DerFahrer is offline   Reply With Quote
Old 11-18-2003, 09:49 PM   #5
ws6fiero
Scooby Newbie
 
Member#: 33067
Join Date: Feb 2003
Chapter/Region: MWSOC
Location: MI
Vehicle:
1998 Legacy Wagon
Spruce Pearl

Default

Yeah, this is why I was confused. I haven't really heard about it in the 2.2... just on the EJ20T and EJ25. Heck, seems like the only thing I ever hear about the EJ22 is how bulletproof the thing is and how it lasts forever.

But, yeah, I'm really not feeling like tearing it apart and replacing the pistons. So we'll see how long she lasts.
ws6fiero is offline   Reply With Quote
Old 10-14-2020, 03:55 PM   #6
Johnny Subaru
Scooby Newbie
 
Member#: 518635
Join Date: Sep 2020
Default Any update?

How long did the engine end up lasting after you started hearing the piston slap?
Johnny Subaru 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
05 STi-How LOng wiLL iT LaST deviseltd General Community 15 09-27-2004 01:29 PM
Liberal Talk Radio launches this week. How long will it last? YoungWilliams Political Playground - Chaotic Neutral Edition 28 03-31-2004 01:49 PM
How long will it last? STi&LT1 Off-Topic 11 01-05-2004 07:48 AM
WRX stock turbo, how long will it last? Rev Newbies & FAQs 2 10-08-2002 03:33 PM
kyb`s agx & 1.5"drop how long will it last milkman Brakes, Steering & Suspension 2 07-05-2001 10:30 AM

All times are GMT -4. The time now is 09:53 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.