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Author Topic: NGK Iridiums BKR8EIX ***12k mile update on page 13***  (Read 96540 times)

Offline Tfsi_Mike

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Re: NGK Iridiums BKR8EIX
« Reply #30 on: December 20, 2011, 10:47:22 am »

Quick question or two - I know that these plugs are sometimes sold as single units (as they appear to be on the ebay link) as they are used in motorbikes. However, I think the bike plugs come with a different gap setting. Is it the same for these or are they preset to 0.8mm like the 4-pack?

Also, there was a post or two about some folks reducing the gap from 0.8 to 0.67mm or something like that on tuned cars. Is there anything behind reducing the gap (as there is a big danger of damaging the delicate tips on these plugs?





The pad damper I'm talkin about ^^ 

I managed to source 4 of these for my NQSBBK as I was unlucky enough to get a bit of low speed squeel although it may have been a combination of discs, pads and not being broken in enough. These things fixed it no problem anyway.  As a bit of advice, if you are going without the anti-squeel shims, use a non-petroleum based grease on the back of the pads like CeraTec. Copper grease rots the bejeeziz out of the rubber dust seals.  :happy2:

It was RON ECHT who suggested that gap on the other NGK iridium thread.  I bought a feeler gauge but didnt want to damage the plug.

Offline Tfsi_Mike

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Re: NGK Iridiums BKR8EIX
« Reply #31 on: December 20, 2011, 10:50:37 am »
Can you take the brake talk to another thread please, I will clean this up a bit later.

Deleted my brake posts. Sorry about that.

Offline alackofspeed

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Re: NGK Iridiums BKR8EIX
« Reply #32 on: December 22, 2011, 11:37:23 pm »
I found this thread after a bit of searching having noted my car was missing occasionally at idle after a long run at medium to high loads (extended motorway run, with some B-road overtaking for instance). I have the latest revision PCV flying-saucer-esk jobba fitted.

Mine's a stg-1 K03, so I'll report any improvement to add to the thread's statistics. For reference the plugs I removed are 15k old PFR7S8EG and they look in text-book condition. Whatever the outcome 4 iridium plugs for just over £20 makes them pretty much disposable, so cheers to the OP for the tip-off.

Notes since fitting:-

Idle better.
Fuel consumption unchanged - currently getting between 35-37mpg on the run to work, and saw 37.5 mpg on a 45 mile motorway drive earlier in the week, which is par for the course.
Engine seems to sound crisper, but this may be placebo.

Offline alexperkins

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Re: NGK Iridiums BKR8EIX
« Reply #33 on: December 22, 2011, 11:53:32 pm »
Ive noticed the same so it would imply these plugs really do make a big difference.

However my MPG has improved by around 2-3mpg


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Offline sub39h

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Re: NGK Iridiums BKR8EIX
« Reply #34 on: December 23, 2011, 02:34:50 am »
Ive noticed the same so it would imply these plugs really do make a big difference.

However my MPG has improved by around 2-3mpg

My mpg improvement has been more to the order of 4-5mpg
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Offline alexperkins

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Re: NGK Iridiums BKR8EIX
« Reply #35 on: December 23, 2011, 07:51:44 am »
Mine may be more but I've only driven it twice since replacing them!


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Offline markymark

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Re: NGK Iridiums BKR8EIX
« Reply #36 on: December 23, 2011, 07:39:04 pm »
Fitted my set today and I immediately noticed the engine ran a lot smoother. My slight misfire had totally gone and she even seems more eager! :driver:

Offline flyboy1976

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Re: NGK Iridiums BKR8EIX
« Reply #37 on: December 24, 2011, 01:44:37 pm »
Put mine in the other day and def smoother! I was running the NGK OEM heat range ''7'' plugs before.

Offline Tfsi_Mike

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Re: NGK Iridiums BKR8EIX
« Reply #38 on: December 24, 2011, 02:03:19 pm »
Put mine in the other day and def smoother! I was running the NGK OEM heat range ''7'' plugs before.

Looking forward to feeling a difference between the 7 & 8

Offline MAT ED30

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Re: NGK Iridiums BKR8EIX
« Reply #39 on: December 24, 2011, 02:33:05 pm »
Going to get some of these next week I think

Mods yes but way too many to stick in this little box

Offline jimk04

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Re: NGK Iridiums BKR8EIX
« Reply #40 on: January 03, 2012, 07:24:25 pm »
Have bought some of these today- got them from my local motor factor as a friend runs it, payed £35.

What is the deal with the gapping of them?

IS it best to close them down a bit?

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Offline markymark

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Re: NGK Iridiums BKR8EIX
« Reply #41 on: January 03, 2012, 08:18:46 pm »
Mine were gapped at .8 I think.

Offline alexperkins

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Re: NGK Iridiums BKR8EIX
« Reply #42 on: January 03, 2012, 08:30:27 pm »
I wouldn't touch the gapping. Mine are perfect from their purchased spec.


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Offline markymark

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Re: NGK Iridiums BKR8EIX
« Reply #43 on: January 03, 2012, 09:37:24 pm »
I wouldn't touch the gapping. Mine are perfect from their purchased spec.
Mine were all over the place, that's the only reason why mine were done!

Offline vRSAlex

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Re: NGK Iridiums BKR8EIX
« Reply #44 on: January 08, 2012, 05:31:27 pm »
 0.8 should be the standard gap. I always gap them down to 0.64.
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