Sparky Regap And Ngks

[5ky-lin3]

Hey guys,

I've recently just had to regap my current plugs in my rb25det to the .8mm mark to fix a misfiring problem I had because of air flow upgrades which has completely fixed the problem for now. However, I am thinking that I will be purchasing some NGK BKR5EIX-11 sparkies to fully replace these. Will I still need to regap these plugs down as well or not because of the better performance of them?

Cheers,

Dallas

[defari]

^ i got the same - havent put them in but was told to gap .8mm

[DVS JEZ]

yes you will need to regap.

no you will not be making much more power with the new really expensive plugs,

yes you should just get some new BKR6ES copper plugs.

why do you want the 5 heatrange?

[defari]

about the heat range i just went with justjaps advice.. sent him a list of mods i have, he said get these / gap to .8mm

[The Bogan]

The gap should go down as the boost level comes up, to a point.

Mine runs best at .8 @ 14lb, use to breakdown a far bit at .11 @ 14lb high rpm.

+1 for copper plugs, just change them at every service, cheap/easy and you always have a good plug, dont believe the hype for the plugs that they say last for 100,000k, they are good for the first 5,000 then average from then on.

There is a good thread in here about plugs, all about heat range and gap size.

[R31Nismoid]

Why don't you just BUY the plugs @ 0.8mm? They come like that outta the box.

No need to risk damaging the electrode.

As for the rest - OP - read the damn spark plug thread.

You have the wrong plugs.

[defari]

^^ ? was told they are correct by just jap

[Sheriff Wan]

You want BCPR6ES - the BKR plugs are slightly shorter or longer by approx 2mm (cant remember exactly)

The BCPR6ES are gapped to 0.8mm they are copper, they are cheaper and they work just the same.

If you really want to you can deposit the money I just saved you into my account.

Read the spark plug thread - all of it.

/thread

[gfunkk]

You want BCPR6ES - the BKR plugs are slightly shorter or longer by approx 2mm (cant remember exactly)

The BCPR6ES are gapped to 0.8mm they are copper, they are cheaper and they work just the same.

/thread

^^this

these plugs are what most rb25det owners use