Spark plug gap - Subaru Forester Owners Forum
Subaru Forester Forum
ebay search
Subaru Forester Forum
Go Back   Subaru Forester Owners Forum > International Forums > Europe
SubaruForester.org is the premier Subaru Forester Forum on the internet. Registered Users do not see the above ads.
User Tag List

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 08-14-2010, 09:15 AM   #1 (permalink)
Registered User
 
Andy Keeble's Avatar
 
Join Date: Aug 2010
Posts: 130
Location: Leicestershire
Car Year: 57
Car Model: 2.5xten
Gallery: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Default Spark plug gap

Any of you guru's know what spark plug gap I need for a MY57 forester 2.5xten?

TIA

Andy
Andy Keeble is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-14-2010, 09:49 AM   #2 (permalink)
Don, King of the parts diagram
Lifetime Supporting Member
 
don1952's Avatar
 
Join Date: Jan 2006
Posts: 4,621
Location: Harpenden UK
Car Year: MY11
Car Model: WRX STi Sedan
Transmission: 6MT
Gallery: 3
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
Feedback Score: 1 reviews
Default

You'll find the plug info in this document.................
http://www.subaru-car.ru/for4/for4_sec2_9.pdf


If you look around the site you may find other info that will be of interest
__________________
Was a MY03 FXT 5MT (280bhp/290Lbsft)
Now a MY11 WRX STi 4door (342bhp/360Lbsft)
don1952 is online now   Reply With Quote
Old 08-14-2010, 09:58 AM   #3 (permalink)
Registered User
Thread Starter
 
Andy Keeble's Avatar
 
Join Date: Aug 2010
Posts: 130
Location: Leicestershire
Car Year: 57
Car Model: 2.5xten
Gallery: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Default

Cheers for that Don.

Oh and yes, I am aware of the search function but being new here it's nice to actually exchange threads with other members
Andy Keeble is offline   Reply With Quote
Old 08-14-2010, 10:12 AM   #4 (permalink)
Don, King of the parts diagram
Lifetime Supporting Member
 
don1952's Avatar
 
Join Date: Jan 2006
Posts: 4,621
Location: Harpenden UK
Car Year: MY11
Car Model: WRX STi Sedan
Transmission: 6MT
Gallery: 3
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
Feedback Score: 1 reviews
Default

I was talking about the site where the document came from

If necessary put it through a translater like Altavista
__________________
Was a MY03 FXT 5MT (280bhp/290Lbsft)
Now a MY11 WRX STi 4door (342bhp/360Lbsft)
don1952 is online now   Reply With Quote
Old 08-14-2010, 11:36 AM   #5 (permalink)
Forum Member
 
agkq62's Avatar
 
Join Date: Jan 2006
Posts: 1,055
Location: N Yorks
Car Year: 2005
Car Model: XTEn
Transmission: Auto
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Feedback Score: 0 reviews
Default

I am going to be brave and query the Prof PDF

I have recently been checking on spark plugs for the first change at 50k and according to NGK the 05-on 2.5 has a different plug, ILFR6B. The gap is listed as "preset" so I assume it is not adjustable.

Am I Right?

Max.
__________________
2005 UK XTEn 4EAT sports shift

Last edited by agkq62; 08-14-2010 at 12:56 PM.
agkq62 is offline   Reply With Quote
Old 08-15-2010, 04:34 AM   #6 (permalink)
Don, King of the parts diagram
Lifetime Supporting Member
 
don1952's Avatar
 
Join Date: Jan 2006
Posts: 4,621
Location: Harpenden UK
Car Year: MY11
Car Model: WRX STi Sedan
Transmission: 6MT
Gallery: 3
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
Feedback Score: 1 reviews
Default

Standard plug for the 2.5L turbo is a ILFR6B
__________________
Was a MY03 FXT 5MT (280bhp/290Lbsft)
Now a MY11 WRX STi 4door (342bhp/360Lbsft)
don1952 is online now   Reply With Quote
Old 08-15-2010, 11:54 PM   #7 (permalink)
Forum Member
 
agkq62's Avatar
 
Join Date: Jan 2006
Posts: 1,055
Location: N Yorks
Car Year: 2005
Car Model: XTEn
Transmission: Auto
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Feedback Score: 0 reviews
Default

Thanks for the confirmation Don. The pre 05 2.5L has a different plug listed by NGK. What do it mean when the gap is "preset"?

Thanks,

Max.
__________________
2005 UK XTEn 4EAT sports shift
agkq62 is offline   Reply With Quote
Old 08-16-2010, 12:02 AM   #8 (permalink)
Super Moderator
Contributing Member
Supporting Member
 
Gigsy's Avatar
 
Join Date: Sep 2009
Posts: 4,570
Location: Teutonic Darkside
Car Year: 2001
Car Model: Porsche Boxster 3.2S
Transmission: Tiptronic
Gallery: 0
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 91 Post(s)
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by agkq62 View Post
What do it mean when the gap is "preset"?
Set to manufacturer's spec by default... always worth checking before fitting though.
__________________
Was: 01 WRX > 02 WRX > 03 FXT > 02 WRX
Now: Boxster S, MCS, BMW X3
And: KTM 405 EXC, BMW F700GS
Gigsy is online now   Reply With Quote
Old 08-16-2010, 02:07 AM   #9 (permalink)
Forum Member
 
justinw2116's Avatar
 
Join Date: Dec 2009
Posts: 252
Location: Wheatland, CA
Car Year: 2010
Car Model: Forester
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 3 reviews
Default

A lot of new Platinum spark plugs will be damaged if you try to gap them like you would for an older car. Gapping a spark plug is going to become one of those traits that we all lose the skill for... Kinda like the ability to read a water gauge, check your oil level, and this thing called a "manual choke" (***?).
justinw2116 is offline   Reply With Quote
Old 08-19-2010, 03:28 AM   #10 (permalink)
Registered User
 
frazerjames1979's Avatar
 
Join Date: Apr 2009
Posts: 511
Location: Hayling Island near Portsmouth
Car Year: 1997
Car Model: T/tb
Gallery: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by Gigsy View Post
Set to manufacturer's spec by default... always worth checking before fitting though.
They are never all the same when they say "preset"

Buy yourself a "Champion spark plug coin" rather than using feeler guages.



the iridium plugs have very brittle electrodes so be careful.
__________________
Put it in "D" for "Do It" and hit the noise pedal
frazerjames1979 is offline   Reply With Quote
Old 08-19-2010, 03:39 AM   #11 (permalink)
Super Moderator
Contributing Member
Supporting Member
 
Gigsy's Avatar
 
Join Date: Sep 2009
Posts: 4,570
Location: Teutonic Darkside
Car Year: 2001
Car Model: Porsche Boxster 3.2S
Transmission: Tiptronic
Gallery: 0
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 91 Post(s)
Feedback Score: 0 reviews
Default

^^ that's a cracking little gadget
__________________
Was: 01 WRX > 02 WRX > 03 FXT > 02 WRX
Now: Boxster S, MCS, BMW X3
And: KTM 405 EXC, BMW F700GS
Gigsy is online now   Reply With Quote
Old 08-19-2010, 04:48 AM   #12 (permalink)
Forum Member
 
funkymonkey1002's Avatar
 
Join Date: Jan 2006
Posts: 9,012
Location: Boston
Car Year: 2004
Car Model: 2.5 XT
Transmission: 4eat
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Feedback Score: 8 reviews
Default

You can still gap iridiums if you do it by bending the arm. Don't do it by shoving the ramp between the parts and spreading them, this WILL damage the electrodes. The oem iridiums should be pretty close to the correct gap.

IIRC the gap is around .030" for turbo models.
__________________
04xt/4eat, 16g, STI bits and bobs
funkymonkey1002 is offline   Reply With Quote
Old 08-19-2010, 08:31 AM   #13 (permalink)
has awakened!
Lifetime Supporting Member
 
2.5x_sleeper's Avatar
 
Join Date: Aug 2007
Posts: 20,095
Location: Newberg, OR
Car Year: 2007
Car Model: Forester Sports XT
Transmission: 4EAT
Gallery: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 99 Post(s)
Feedback Score: 39 reviews
Default

I agree! Carefully use a wire gauge when gapping or checking iridium spark plugs, since the center electrode is very brittle. You'll be surprised how much the pregapped plugs will vary.

Bobby...

['07 FSXT MODding Journal] ['03 X MODding Journal]
__________________
'07 FSXT - COBB Surgeline dyno Protune - Stage 1+
'03 X +AVO turbo kit = XT (son's)
'95 Neon Sport
2.5x_sleeper is offline   Reply With Quote
Old 08-19-2010, 11:26 AM   #14 (permalink)
Registered User
Thread Starter
 
Andy Keeble's Avatar
 
Join Date: Aug 2010
Posts: 130
Location: Leicestershire
Car Year: 57
Car Model: 2.5xten
Gallery: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Default

I will deffo go for the Iridium plugs. Is it worth upgrading the plug leads too or will stock suffice?


Andy
Andy Keeble is offline   Reply With Quote
Old 08-19-2010, 11:28 AM   #15 (permalink)
Don, King of the parts diagram
Lifetime Supporting Member
 
don1952's Avatar
 
Join Date: Jan 2006
Posts: 4,621
Location: Harpenden UK
Car Year: MY11
Car Model: WRX STi Sedan
Transmission: 6MT
Gallery: 3
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
Feedback Score: 1 reviews
Default

Quote:
Originally Posted by Andy Keeble View Post
I will deffo go for the Iridium plugs. Is it worth upgrading the plug leads too or will stock suffice?


Andy
What plug leads???
__________________
Was a MY03 FXT 5MT (280bhp/290Lbsft)
Now a MY11 WRX STi 4door (342bhp/360Lbsft)
don1952 is online now   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Subaru Forester Owners Forum > International Forums > Europe

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 01:08 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.