P600wrx

iTrader: (1)

Hi, got some plugs today pfr6b do i need to check the gap before fitting if so what should they be gapped too

cheers

Glowplug

iTrader: (8)

Yes, i would check the gaps. I have had them any where from 1mm to 0.5mm out of the box.

P600wrx

iTrader: (1)

cheers bud but what does the gap need to be can't find it anywhere on the old google

scrap that i found a thread on here saying pfr6b are done at 0.8 and are good..

Glowplug

iTrader: (8)

If you are running a little extra power/boost, it will be worth closing a little to 0.65mm-0.70mm, or even upgrading to 7's.

musso2010

I would definatly upgrade to 7's. And gapped to 0.65mm.

PeeVee

iTrader: (1)

0.65-0.07mm is a good setting for the plug (a larger gap can cause a missfire under full throttle). You would use a 7 heat range if you are running more power than std.

Terminator X

iTrader: (7)

^^ I'm using 8's at that gap which are fine at 1.5bar yet mis-fire at 1.8bar ... any ideas why that might be (car is circa 450hp)?

TX.

C. J.

iTrader: (2)

what make and code ?

Terminator X

iTrader: (7)

NGK Racing 8's ... I'll post the code when I get home

TX.

Edit - found it, R7435-8.

tony2701

just managed to get a plug out of my 96 wrx its is a denso k20pr-u find it a bit strange after buying ngkpfr6 and paying someone to fit them has anyone elses sparkplugs changed there name after being fitted .only diffrence from standard is a decat pipe what plugs shall i get now after being on here and nesf im sure i can change them myself now so cheers for that .

C. J.

iTrader: (2)

I run R7434-8 which have the smaller tip and no probs at 2 bar
i'd take yours out and check the ceramic has no cracks . easy way to check is with dirty fingers rub round the ceramic and if there is a crack the dirt/ grease will show the crack up
check gapping 0.65 and if no joy i'd check coil pack /packs

tony2701

checked the coil packs mate and found 1 bust thats why i pulled a plug out ,not checked the rest yet but cant see them fitting some and not all the plugs altho anything is possible .the plug i got out was snapped think i did it got socket stuck but suspect it may have been damaged anyway as i didnt go to mad got more time tomora to have a tinker if i can get some plugs ,cheers for the reply .

P600wrx

iTrader: (1)

thats amazing why would someone do that, unless they couldn't do the job after they broke the coil pack, btw what size socket is it for plug change i think it is 16mm deep

tony2701

just done them mate had denso plugs all bollaxed and yeh 16mm put some plasters on ya knuckles before you start wish i had lol

P600wrx

iTrader: (1)

plugs done mine were all bosch R and all seemed in awesome condition, they were all a very light beige colour, dissapointing to find though they were all exteremly loose as in almost finger tight,

tony2701

what plugs did you put in i went with the advice and got the 7s cpl of my coil packs were dddone aswell feels like a new car been running like a bag of hammers for months ,i had paid £90 to fit a set of coil packs and a set of ngk 6s (some mate eh)strange i took 4 denso plugs out gapped at 1mm and three coil packs were cracked BEWARE OF MEN WITH OILY HANDS

P600wrx

iTrader: (1)

lol i fitted 6's to mine does feel smoother coming onto boost still a slight bit of hesitation at around 6k though but it's coming of boost then so i don't mind,

tony2701

mine feels good but think ive got a dogey driveshaft so dont wanna give it to much till i sort it ,never seam to have it bang on always something to do on them

P600wrx

iTrader: (1)

i am doing great with mine in the past year all it has had is a radiator 2 fuel pumps a different tmic, iacv, maf and plugs oh and avc-r