Home · FAQ · New Posts · My Posts · PMs · Search · Members · Members Map · Groups · Profile · Donate ·
Log In
|
- You are currently viewing DISCO4.COM as a guest - Register to take part or Log In
pagoda
Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
|
V8 spark plug gap in mm anyone please? |
|
As per the post; I’m changing the plugs on my V8 but have conflicting info on the plug gap. Could anyone offer a definitive answer please? Thanks. PAGODA
|
1st Jun 2018 5:57 am |
|
|
pjm-84
Member Since: 04 Oct 2016
Location: Hampshire
Posts: 2406
|
From the LR workshop manual.
Spark plugs: Make NGK Type 1FR5N10 Iridium
plug Gap 1.0 mm (0.04 in)
Ignition coil: Make Denso Type 2W93-12A366-BA
Firing Order: 1-5-4-2-6-3-7-8
Description Nm lb-ft
Ignition coil bolt 6 4
Spark plugs 25 18
|
1st Jun 2018 6:43 am |
|
|
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10337
|
and if not Iridium it can be bigger. e.g 1.1mm or even more
|
1st Jun 2018 11:02 am |
|
|
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8044
|
I use an hacksaw blade as a gauge It can when others can't,
It will when others won't,
It goes where others don't.
|
1st Jun 2018 11:52 am |
|
|
kajtzu
Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6538
|
In case it matters, I used Denso IK16TT plugs instead of NGK. The gap is 1.0 mm on them, too.
|
1st Jun 2018 3:40 pm |
|
|
pagoda
Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
|
Thanks everyone. I omitted to post that I’m using NGK laser Iridium. So will gap at 1mm.
Cheers. PAGODA
|
1st Jun 2018 11:16 pm |
|
|
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1772
|
Iridiums should not be adjusted, they come set from factory
|
2nd Jun 2018 8:46 am |
|
|
pagoda
Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
|
Globetrotter448 wrote:Iridiums should not be adjusted, they come set from factory
With respect, this is poor advice in my view. From experience, ‘set from factory’ doesn’t always mean ‘set right.’ It’s always worth checking plug gap BEFORE install rather than assuming all is correct, then finding out you have poor running due to incorrect gap/mis-aligned electrodes having had to remove to check. Checking/setting takes 10 mins for a set of plugs. Way less hassle than having to remove to check after finding a problem.
NGKs website has this under FAQ:
Should I Gap My Plugs?
April 10, 2018
A spark plugs Gap directly affects the tip temperature and the voltage necessary to fire the plug. NGK spark plugs traditionally leave the factory pre-gapped for their most popular application. However, a plug may fit hundreds of engines, from cars to golf carts. Gapping the plugs to your engine’s specifications is important to prevent pre-ignition, detonation, fouling and poor fuel economy. Even if the preset Gap matches that required by your engine, it is always good practice to physically check the Gap as it may have shifted during transportation (not all spark plugs are packaged in a way that protects the firing end ). PAGODA
|
2nd Jun 2018 10:56 am |
|
|
RickyAtHere
Member Since: 05 May 2018
Location: Alberta
Posts: 37
|
I use Denso IridiumTT on the AJ-V8, MPG increases a bit
|
11th Jun 2018 2:22 am |
|
|
Dan1720v
Member Since: 28 Mar 2018
Location: Street/Somerset
Posts: 176
|
pagoda wrote:Globetrotter448 wrote:Iridiums should not be adjusted, they come set from factory
With respect, this is poor advice in my view. From experience, ‘set from factory’ doesn’t always mean ‘set right.’ It’s always worth checking plug gap BEFORE install rather than assuming all is correct, then finding out you have poor running due to incorrect gap/mis-aligned electrodes having had to remove to check. Checking/setting takes 10 mins for a set of plugs. Way less hassle than having to remove to check after finding a problem.
NGKs website has this under FAQ:
Should I Gap My Plugs?
April 10, 2018
A spark plugs Gap directly affects the tip temperature and the voltage necessary to fire the plug. NGK spark plugs traditionally leave the factory pre-gapped for their most popular application. However, a plug may fit hundreds of engines, from cars to golf carts. Gapping the plugs to your engine’s specifications is important to prevent pre-ignition, detonation, fouling and poor fuel economy. Even if the preset Gap matches that required by your engine, it is always good practice to physically check the Gap as it may have shifted during transportation (not all spark plugs are packaged in a way that protects the firing end ).
True, but if you try and adjust the gap on iridium you’re likely to damage the electrode and therefore shouldn’t adjust them.
|
11th Jun 2018 5:40 am |
|
|
|
Posting Rules
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
|
|
DISCO4.COM Copyright © 2004-2024 Futuranet Ltd & Martin Lewis
|
|
DISCO4.COM is independent and not affiliated to Land Rover.