Spark Plug question -insulator projection

[jacobsen]

http://densoautoparts.com/iridium-ra...specifications

I'm curious if the IQ01-24 or IW01-24 would workout in the B6? Specifically would the projection of the insulator as indicated on the specifications page affect fitment?

Theres an 02 variant to these with even different insulator projection.


IQ01-24#4 5707 14 19 5/8 0.7 -1.0

IW01-24#4 5713 14 19 13/16 0.6 -1.5

I believe this is the plug I've been running for a very long time with the APR stage 2 and so far the plugs having been without fail, I'd recommend them. Though I think APR intends the stage 2 setups to run NGK double platinum.
IK01-24#4 5701 14 19 5/8 0.7 -1.0

Any one know how the 02 variant might affect fitment and what the difference is about?

[MikTip]

http://densoautoparts.com/iridium-ra...specifications

I'm curious if the IQ01-24 or IW01-24 would workout in the B6? Specifically would the projection of the insulator as indicated on the specifications page affect fitment?

Theres an 02 variant to these with even different insulator projection.


IQ01-24#4 5707 14 19 5/8 0.7 -1.0

IW01-24#4 5713 14 19 13/16 0.6 -1.5

I believe this is the plug I've been running for a very long time with the APR stage 2 and so far the plugs having been without fail, I'd recommend them. Though I think APR intends the stage 2 setups to run NGK double platinum.
IK01-24#4 5701 14 19 5/8 0.7 -1.0

Any one know how the 02 variant might affect fitment and what the difference is about?

Get the plug...compair it side by side to the OE...see.

Whats your goal with these alternative plugs?

I run BKR7EIX with my K04 and R8 red coils!

The R8 coils errode the plug faster than the normal 1.8t coils, but its a noticable diff you can feel in the engine while driving!

http://www.audizine.com/forum/showth...?highlight=06e

[diagnosticator]

Insulator projection is a property of the heat range of the plug. Longer insulators provide a wider heat range and help the plugs stay clean during lower load operation while at the same time run cool enough to prevent the glowing plug insulator tip from igniting the air/fuel mixture to soon, called pre-ignition. When this happen, auto-ignition occurs to early, before the spark occurs. This is different from detonation, where ignition occurs at a excessive flame travel speed and the air/fuel ignites all at once instead of the smooth progression of the flame through the air/fuel charge. Detonation causes excessive pressure increase/unit time and will damage the engine from excess pressure and localized overheating of the piston crown.

[jacobsen]

Get the plug...compair it side by side to the OE...see.

Whats your goal with these alternative plugs?

I run BKR7EIX with my K04 and R8 red coils!

The R8 coils errode the plug faster than the normal 1.8t coils, but its a noticable diff you can feel in the engine while driving!

http://www.audizine.com/forum/showth...?highlight=06e

These tend to be pretty pricey plugs. I got four of them for 15 bucks brand new on eBay free shipping! I picked them up with heat range 27. Originally I started out with ik22 iridium plugs but soon discovered that as Diagnosticator points out they weren't cold enough. So I jumped to ik24. I did start out with the same NGK plugs you're using. But I always had a better feel and throttle response from Denso iridium plugs. I trust and believe in the rep that they get online and on the street. I know I feel a difference between the NGK double Platinum and the ik24 that I've been using for the past 40000 miles. That's another think, they last absolutely forever. If you're going to try to gap them you have to use a feeler gauge or a micrometer and be very gentle. They have the finest iridium wire electrode of any plug. Over time the NGK plugs literally began to fall apart and really aren't intended for extended use intervals in my findings.

Some of the highlights of the Denso iridium racing plugs or that they are self-cleaning, performance designed, iridium, and solid Platinum ground electrode. I like to muck about and experiment. I guess I should try out the R8 coils, I've been putting it off. I'm not exactly sure what revision they're on now. ECS Tuning website is listing. 06E905115E for sale, should I assume that's the latest revision? I want the R8 coils but I also thought they needed to be reprogrammed to prevent damage to them? Someone posted something about that last year. I think the iridium plugs won't heat up the coil packs as much either as they don't require as much voltage for the same amount of spark?

Insulator projection is a property of the heat range of the plug. Longer insulators provide a wider heat range and help the plugs stay clean during lower load operation while at the same time run cool enough to prevent the glowing plug insulator tip from igniting the air/fuel mixture to soon, called pre-ignition. When this happen, auto-ignition occurs to early, before the spark occurs. This is different from detonation, where ignition occurs at a excessive flame travel speed and the air/fuel ignites all at once instead of the smooth progression of the flame through the air/fuel charge. Detonation causes excessive pressure increase/unit time and will damage the engine from excess pressure and localized overheating of the piston crown.

As long as the plugs are the same size I guess there's not much to worry about as long as they don't get too crispy. I went with heat range 27. That might be a little too cold for all I know but, as I stated above 24 was the first place I landed where I didn't get misfire.

[jacobsen]

I forgot to mention that the APR stage 2 setup calls for .28" or .7mm Gap and these are preset at that Gap.

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