Mike's Step By Step Guide To: Replacing Spark Plugs

[PHANTMXR6]

If you dropped them in the hole then I would definately be removing them and checking them.

Make sure you place them in there nicely next time.

[Mike XR6T]

definatly take them out and check the gap mate

sounds like that's your problem

[wolfee]

ive been trying to get some BKR6EIX pre gapped at 0.8 but can only find mainly BKR6EIX-11 which is gapped at 1.1 anyone got a link for the 0.8 plugs maybe ebay?

thanks.

Edited 17/01/09 12:17 AM by wolfee

[PHANTMXR6]

The part number for the 0.8mm gapped plugs, apparently, is exactly as you have posted.

BKR6EIX

[messna]

I have just bought some .8 gap spark plugs from repco for $ 22 each and installed my 10 psi tune, runs sweet as.

cheers

[graham_h]

hey all

just an update:

after replacing my standard plugs(1.1mm gap)

with NGK BKR6EIX (0.8mm gap)

I have notice a big mid to top end proformance gain.

Anyone that has had a tune should change to these plugs.

The car is so much better up top and also mid range there is much more. the reason being:

Using the standard gaps under boost the coils need to produce more energy to jump the plug gap, most of the energy is used to jump the large gap and there fore not much energy is left for a long duration(burn time). A smaller gap means more energy is saved for a longer burn time therefore betetr combustion in each cylionder! and more power!

To explain: a coil can only produce so muc h energy. that energy is divided into 2 sections

1: the Firing voltage- the energy required to make the initial jump of the plug gap.

2: the left over energy is used to continue the burn time(duration) for as long as possibel til there is no energy left thus giving complete combustiopn.

I would recommend anyone that has had a tune and still running standard plugs to follow the guide and spend an hour or so changing the plugs for a big improvement in driveability up top.

cheers

ps under larger boost amounts more energy is used to make the initial arc across the gap and that's y u get less power case there isnt enough left over to burn all the A/F

hope this helps

mike

Great write up

Would the plugs work just as well in a N/A motor ?

[bdave351]

Props to mike for the right up, just changed to the iridiums using your easy step by step guide!

Cheers

[Mike XR6T]

Great write up

Would the plugs work just as well in a N/A motor ?

graham

I doubt u would notice any differance in the NA engine

sorry mate, just get some good quality standards

I.e Bosch Platniums or NGK equivilant

mike

[Woody3107]

Thanks Mike,

saved me alot of time and money,

Owe ya a few beers,

Cheers

[seduced]

So, how long will these plugs last? As long as the standard ones?