Vq25det Spark Plugs

[luvsno.stagea]

Hi, Whats the best plugs for my arx turbo. Not worried about cost. At the moment it somtimes misses when at full boost (standard 13psi) Can happen at any revs

Thanks Brent

[red_spider]

12/02 - 8/04 Nissan Stagea 2500 Turbo VQ25DET

Spark Plug Part No. Recommended Plug PLFR6A-11

or LFR6AIX-11

from ngk website

http://www.ngk.com.au/spark-plugs-part-finder/japanese-imports?PageMode=Results&Make=Nissan&Model=Stagea&Year=12%2F028%2F042500TurboVQ25DET

Edited January 26, 2015 by red_spider

[luvsno.stagea]

Hi, Thanks for that. I have seen it suggested to use heat range 7 plugs. I think ill go for the iridium ix 6 ones. Thanks again,

Brent

[scotty nm35]

Stock engine, 6 heat range is fine, so is 7. Quite often I see 5 though which is too hot.

Modified cars LFR7, or 8 if you have the coin for HKS tax.

[luvsno.stagea]

Thanks for confiming that Scotty. Will go with the iridium ix.

Brent

[conan7772]

Idle is low and it stalls occasionally so might change the plugs.

Interesting Just Jap list LFR5AIX-11 as their Iridium plug for the VQ25DET which is wrong.

Are there two thread lengths that work with the VQ25DET?

Looking at the Nismo S-Tune Long Reach plug made by NGK.

Any benefits with this ?

http://www.ebay.com/itm/Nismo-S-Tune-7-Iridium-Spark-Plug-Pair-for-Nissan-SR20VE-VQ35DE-V35-M35-Z33-P12-/191240981584?hash=item2c86d9cc50:m:mgdig7LDXswC498STORJ_eQ&vxp=mtr

Doesn't say what gap they are though.

[scotty nm35]

Those Nismo plugs are a 7 heatrange, no point getting those when the LFR7's are half the price.

Gap doesn't matter in this case, as they will still work at 4mm gap thanks to our coils.

[YangLIU]

info from NGK japan

best to normal:

RX -> MAX -> IX

also add Japanese year converter:

http://www.sljfaq.org/cgi/date.cgi?year=h14

Edited October 27, 2015 by YangLIU

[conan7772]

so to clarify the ngk lfr7aix 2309 is the correct one for vq25det ?

[Brick]

That's what I run

[samuri]

Which spark plus do I need?

I am confused.
 

I run LPG/petrol on NM35 stage 2002. Motor VQDET.  2500cc

I understand the LPG run a bit cooler

I have been quoted the following plugs

LFR6AP-9(Platinum)  $13 and 

 LFR6AIX-11 (iridium) $23.(two of these plugs recently installed, but are these the right type of plug?)

Not sure what the Japanese writing means.

I will get 4 more plugs and will get 4 ignition coils.

i recently had replaced 2 bad coils and 2 spark plugs on cylinders 3 and 6.

Please advise how to proceed .

I initially had very poor  to no acceleration .

replaced 2 plugs and coils and now acceleration has improved immensely  but can't reach more than 3000 rpm acceleration isn't reliable 

thanks

                                 

Edited September 22, 2018 by samuri

[KiwiRS4T]

These are available on US Ebay for a fraction of that price and with free postage

https://www.ebay.com/itm/4x-NGK-Iridium-IX-LFR6AIX-11-Spark-Plugs-6619-For-BMW-Subaru-Volvo-Yamaha-Honda/153189046178?hash=item23aac757a2:g:ihgAAOSwaMxbpGka&vxp=mtr