Recent Topics
Goodwood Racing
by AZjeff - 05/31/20 10:23 PM
Blackstone Lab Question
by klt1986 - 05/31/20 08:19 PM
Fram oil filters at Advance Auto
by Electromotive - 05/31/20 08:02 PM
The Last Coat 2?
by tbm5690 - 05/31/20 07:33 PM
Can a car have too much battery?
by wings&wheels - 05/31/20 07:13 PM
Oil Extractor Pump Problem
by tc1446 - 05/31/20 07:11 PM
Tacoma fuel filter cut open
by funflyer - 05/31/20 06:53 PM
Electronic Octane Testers on eBay
by smonska - 05/31/20 05:35 PM
0W-8 is here: JASO GLV-1
by Gokhan - 05/31/20 05:26 PM
2010 Corolla What oil ??
by GMguy84 - 05/31/20 05:19 PM
Knock While Cruising, None While In Boost
by gathermewool - 05/31/20 04:11 PM
Replaced Golf Sportwagen with an Alltrack
by dareo - 05/31/20 03:27 PM
TW Ceramic Spray First Time
by Toros - 05/31/20 02:49 PM
The perfect tractor oil
by Chris142 - 05/31/20 02:42 PM
5.7 HEMI Lifter/cam failure cause
by Skippy722 - 05/31/20 02:38 PM
Battery 2013 4Runner 4WD
by Gebo - 05/31/20 02:29 PM
Supermarket Heroes 500 at Bristol
by bdcardinal - 05/31/20 01:55 PM
More M1 changes
by Flashlightboy - 05/31/20 01:49 PM
Car Reviewers
by borgward - 05/31/20 01:43 PM
Final charge global extender
by mker - 05/31/20 01:15 PM
Newest Members
Haywood, ToOliwer, AbbeyRoad, RPF, Rayi
71586 Registered Users
Who's Online Now
13 registered members (bachman, FordCapriDriver, dishdude, Kamele0N, Hohocc, ctechbob), 1,086 guests, and 31 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics306,109
Posts5,286,664
Members71,586
Most Online4,538
Jan 20th, 2020
Donate to BITOG
Print Thread
Hop To
Changed the spark plugs on Subaru BRZ with pics #5393551 04/04/20 01:08 PM
Joined: Jun 2004
Posts: 259
D
Ded Mazai Offline OP
OP Offline
D
Joined: Jun 2004
Posts: 259
I have replaced the spark plugs after 120000 km. The manual recommends replacing them after 100000 but I was not ready at that time.

New spark plugs:
[Linked Image]
[Linked Image]

Old spark plugs:
[Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]

The gap on the new ones is 0.7 mm. And on the old ones is 0.8 mm.



BRZ | M1 HM 5W-20, FU | PZ Synchromesh.
Re: Changed the spark plugs on Subaru BRZ with pics [Re: Ded Mazai] #5393565 04/04/20 01:18 PM
Joined: Mar 2010
Posts: 50
G
gonefishin Offline
Offline
G
Joined: Mar 2010
Posts: 50
I'd have to say, the old ones held up very nicely.


2015 Cadillac SRX
2014 BMW 528i
2004 Chevrolet Trailblazer 4.2
1969 Chevy Camaro
Re: Changed the spark plugs on Subaru BRZ with pics [Re: Ded Mazai] #5393610 04/04/20 02:26 PM
Joined: Sep 2002
Posts: 4,023
Propflux01 Offline
Offline
Joined: Sep 2002
Posts: 4,023
Is it just me, or does there seem to be alot of carbon on those plugs?


2014 Hyundai Elantra
2014 Hyundai Elantra GT
Re: Changed the spark plugs on Subaru BRZ with pics [Re: Ded Mazai] #5393620 04/04/20 02:37 PM
Joined: Mar 2008
Posts: 9,683
S
slacktide_bitog Offline
Offline
S
Joined: Mar 2008
Posts: 9,683
The old ones look good! Thank you for posting thumbsup

Is the job easy or difficult on the BRZ? smile

Re: Changed the spark plugs on Subaru BRZ with pics [Re: Propflux01] #5393649 04/04/20 03:28 PM
Joined: Oct 2014
Posts: 121
I
Impatient Offline
Offline
I
Joined: Oct 2014
Posts: 121
Originally Posted by Propflux01
Is it just me, or does there seem to be alot of carbon on those plugs?


Those are better than any of the Ford EB plugs I removed at 45k (miles)...at least from a carbon perspective...maybe from a wear perspective too.

I assume the BRZ is direct injected? Or is it “hybrid” direct + port? For that matter, I don’t know how my 2007 OBXT (turbo) is injected. I would be interested to see how my Subaru plugs look...nearing 40k. No way I’m going to do it “just for the heck of it” though. Not sure what the shop put in @ 94k.


15 Ford Transit 250 3.5EB Turbo
07 Subaru OBXT 2.5 Turbo Castrol Euro 0w30
Re: Changed the spark plugs on Subaru BRZ with pics [Re: slacktide_bitog] #5393670 04/04/20 03:54 PM
Joined: Jun 2004
Posts: 259
D
Ded Mazai Offline OP
OP Offline
D
Joined: Jun 2004
Posts: 259
Originally Posted by slacktide_bitog
The old ones look good! Thank you for posting thumbsup

Is the job easy or difficult on the BRZ? smile


It's not a job. It's a punishment. The space is so tight that from the beginning it was hard to imagine that I can even reach the spark plugs by hand. Anyway it took some time, thinking, finding and buying the correct tools. I used this setup:
[Linked Image]
[Linked Image]

People can select something else but the total length of the spark socket + ratchet + all the extensions should be around 14.5 cm +/-0.5 cm. My was about 14 cm and I would like a few mm longer but it worked. Also I recommend having a quality ratchet with a compact head and an extendable (or just long) handle. My ratchet head is not compact and it gave me troubles. Also a set of sockets with a 1/4" ratchet would be useful to unscrew some brackets, ignition coils but not necessary. It is possible to use a 10 mm wrench for those places. And you need a magnet to extract the spark plugs from the wells.


BRZ | M1 HM 5W-20, FU | PZ Synchromesh.
Re: Changed the spark plugs on Subaru BRZ with pics [Re: Propflux01] #5393679 04/04/20 04:07 PM
Joined: Jun 2004
Posts: 259
D
Ded Mazai Offline OP
OP Offline
D
Joined: Jun 2004
Posts: 259
Originally Posted by Propflux01
Is it just me, or does there seem to be alot of carbon on those plugs?


Yes, it looks like some carbon build up. Unfortunately the only ethanol free gas in Ontario is Shell 91. This is what I use most of the time. The ECU retards the ignition timing by about 5 degrees. The spark plugs probably seldom reach the correct temperature to burn the carbon. This car need the octane 94. I expected to see more carbon.


BRZ | M1 HM 5W-20, FU | PZ Synchromesh.
Re: Changed the spark plugs on Subaru BRZ with pics [Re: Ded Mazai] #5393688 04/04/20 04:23 PM
Joined: Feb 2014
Posts: 3,852
L
Lolvoguy Offline
Offline
L
Joined: Feb 2014
Posts: 3,852
Originally Posted by Ded Mazai
Unfortunately the only ethanol free gas in Ontario is Shell 91. This is what I use most of the time. The ECU retards the ignition timing by about 5 degrees. The spark plugs probably seldom reach the correct temperature to burn the carbon. This car need the octane 94. I expected to see more carbon.

shocked2
What kind of super tune are you running on that bad-boy?!


06 Lexus IS350- Wife
88 BMW 325is- Mistress
Say "no" to Turbo!
Re: Changed the spark plugs on Subaru BRZ with pics [Re: Ded Mazai] #5393692 04/04/20 04:27 PM
Joined: Jan 2009
Posts: 7,949
gathermewool Offline
Offline
Joined: Jan 2009
Posts: 7,949
Great job, bud! I just did this on my FXT and will likely do it on the Legacy soon, even though I'm not at 60k miles yet.


14 Forester XT Touring FA20DIT (Cobb Stage 1)
Castrol Magnatec 5W-30 D1G2 + FU filter (2nd OFI) (77,760mi, 3/7/20)
15 Legacy Premium FB25
Magnatec 0W-20 D1G2+ FU filter (2nd OFI) (54,621mi, 3/4/20)
Re: Changed the spark plugs on Subaru BRZ with pics [Re: Lolvoguy] #5393731 04/04/20 04:57 PM
Joined: Jun 2004
Posts: 259
D
Ded Mazai Offline OP
OP Offline
D
Joined: Jun 2004
Posts: 259
It is complete stock. No tune whatsoever. High compression ratio requires high octane fuel.


BRZ | M1 HM 5W-20, FU | PZ Synchromesh.
Re: Changed the spark plugs on Subaru BRZ with pics [Re: Ded Mazai] #5393859 04/04/20 07:01 PM
Joined: Aug 2017
Posts: 1,354
1
14Accent Offline
Offline
1
Joined: Aug 2017
Posts: 1,354
Thanks for sharing the pic's, OP.

I can't recall the last car I came across that ran factory triple electrode plugs. Very interesting. IMO, there doesn't look to be too much carbon on those plugs. The BRZ has a combo direct/port injected engine IIRC, and it shows.

I haven't had to do a tune-up on a BRZ yet, however having done plenty of DOHC EJ and FB Subaru spark plug jobs, I feel your pain. Nothing about them is easy.


2013 Chevrolet Volt - Saves enough in fuel to pay for itself!

1980 Honda CB900C - 15k mile cream puff
Re: Changed the spark plugs on Subaru BRZ with pics [Re: Ded Mazai] #5395322 04/06/20 09:49 AM
Joined: Jan 2011
Posts: 1,047
D
DGXR Offline
Offline
D
Joined: Jan 2011
Posts: 1,047
Of course there is some carbon after 120,000 km but it's not bad at all, they look very good and the gap wear isn't very much either. Nice job.


1995 Corvette coupe LT1 6-speed
2006 Tacoma 2.7 Base SR5 AC
1999 Yamaha YZ400FL
2003 Honda XR400R
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™