F30POST
F30POST
2012-2015 BMW 3-Series and 4-Series Forum
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Mechanical Maintenance and TSBs: Break-in / Oil & Fluids / Servicing / TSBs and Service Bulletin > 328 spark plug gap?
ARMA SPEED
Post Reply
 
Thread Tools Search this Thread
      06-20-2018, 10:43 AM   #1
IraHayes
First Lieutenant
United_States
154
Rep
387
Posts

Drives: 328i
Join Date: Apr 2018
Location: CA

iTrader: (0)

328 spark plug gap?

Anyone know what the spark plug gap is supposed to be for the N20? I bought plugs from my local dealer the other day, and I know they are pre-gapped, but I like to check for peace of mind. Surprisingly, the spec isn’t listed in the Bentley manual.

Edit:

According to the NGK website, it is .032”

Does that sound right?

Last edited by IraHayes; 06-20-2018 at 10:52 AM..
Appreciate 0
      06-20-2018, 07:02 PM   #2
John in VA
Colonel
974
Rep
2,180
Posts

Drives: 2015 228i M Sport
Join Date: Jul 2007
Location: Leesburg, VA

iTrader: (6)

TIS makes no mention of a plug gap. I didn't check the Bentley manual.

https://www.newtis.info/tisv2/a/en/f...d-spark-plugs/

I've always just installed the multi-prong NGK Iridium plugs I've used in the E46 & E39 without measuring, but after inspecting that they appeared "OK."
__________________
____________________________________________
2015 BMW 228i in EstorilBlau II Metallic / Terra Dakota Leather - 6-speed manual, M Sport Package, Cold Weather Package, Lighting Package, Premium Package, Harman Kardon premium sound, Anti-theft alarm system, Blue Metallic Matt Accent Moldings, Aluminum Hexagon Interior Strips, Anthracite Headlining
Appreciate 0
      06-21-2018, 08:51 AM   #3
BunkerJ
Colonel
BunkerJ's Avatar
1032
Rep
2,382
Posts

Drives: 2013 328i
Join Date: Mar 2017
Location: San Diego, CA

iTrader: (0)

For a stock car, around 0.03" is normal, so your 0.032" would be just fine.
__________________

2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit
Appreciate 0
      08-16-2018, 02:25 AM   #4
marcozen
Private
11
Rep
56
Posts

Drives: BMW F30 328i 2012
Join Date: Aug 2018
Location: BimmerLand

iTrader: (0)

Quote:
Originally Posted by IraHayes View Post
Anyone know what the spark plug gap is supposed to be for the N20? I bought plugs from my local dealer the other day, and I know they are pre-gapped, but I like to check for peace of mind. Surprisingly, the spec isn’t listed in the Bentley manual.

Edit:

According to the NGK website, it is .032”

Does that sound right?
Stock -> 0.031-0.032 or 0.8mm

Rule of Thumb -> every 50 Hp increase over stock HP, decrease gap by 0.1 mm.

Last edited by marcozen; 08-16-2018 at 02:33 AM..
Appreciate 0
      08-16-2018, 06:20 PM   #5
IraHayes
First Lieutenant
United_States
154
Rep
387
Posts

Drives: 328i
Join Date: Apr 2018
Location: CA

iTrader: (0)

Quote:
Originally Posted by marcozen View Post
Stock -> 0.031-0.032 or 0.8mm

Rule of Thumb -> every 50 Hp increase over stock HP, decrease gap by 0.1 mm.
That's some great info. Thanks for sharing that. One of the many reasons I love this forum.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -5. The time now is 08:32 AM.




f30post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST