Welcome to the North American Subaru Impreza Owners Club Monday December 22, 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 07-16-2002, 08:41 PM   #1
Giova
Scooby Newbie
 
Member#: 1663
Join Date: Jun 2000
Location: Haverhill, Ma
Vehicle:
2000 Impreza RS
BRP

Default Plug gap questions

I was wondering what affect would gapping a plug to .049 on a 2000 RS. I heard some where in the past that a larger gap could increase performance but in turn reduce plug life. I've done a search and nothing came of it. So if anyone out there has any input on this matter feel free to drop your 2 cents......
* Registered users of the site do not see these ads.
Giova is offline   Reply With Quote
Old 07-16-2002, 09:58 PM   #2
yamarocket630
Scooby Specialist
 
Member#: 9436
Join Date: Aug 2001
Chapter/Region: MWSOC
Location: My member# is lower than yours
Vehicle:
05 Saab 9-5 Aero

Default

A larger plug gap may increase performance if the cylinder is not firing properly due to mixture problems, etc. It will not help a cylinder that is already firing correctly. Look at it this way, If you only need a single small match to light that gasoline soaked wood in your campfire pit, it really doesn't matter if you throw a large piece of burning paper on it, it still lights and burns just the same, but the large piece of burning paper might be able to get damp wood burning when the match cannot.

As far as increased plug wear, yes, larger gapped plugs will wear faster due to increased firing voltage.

You should be albe to go .060"-.070" no problem with the stock coils and wires. If you need more than that, you have serious problems in your engine, and will get more power by correcting the mixture/cylinder filling/combustion chamber problems than you ever will with hot coils and big plug gaps.
yamarocket630 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
NGK One step colder plugs... a question about spark gap bajaturk Baja Forum 6 05-25-2010 03:58 PM
Spark Plug gap question??? forsakenforlife Newbies & FAQs 4 03-16-2010 01:53 AM
spark plug gap question dc_adio28 Built Motor Discussion 1 10-30-2009 04:45 PM
Quick spark plug gapping question dlh1999 Newbies & FAQs 8 09-04-2007 10:34 PM
Plug and Gap question JenisonWRX Normally Aspirated Powertrain 2 10-17-2003 05:43 PM


All times are GMT -4. The time now is 10:35 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.