hi there its me again! ive bought NGK7 spark plugs and wanted to ask what sort of gap is suppose to be on them before fitting? oye is it easy to fit the plugs? how long etc what tools.

thanks x

 

My PFR 6's are gapped to 0.6mm. Not sure if 7's should be the same.
Easy but fiddly job. Passenger side - remove battery & washer bottle. Drivers side - remove air box etc. A good socket set will be needed with some small hands!!

 

hmm i see, i will try an get my boyfriend to do the DIY

 

shall i get them gapped to 0.65 or 0.7? the car will be running more boost than standard as the car is getting mapped nxt week.

thanks

 

Either setting will take into account old/unknown condition of coilpacks. I think people do set to 0.65mm with no probs, so may as well set at that gap... Can only help with keeping the spark alight under the increased boost, anyway

 

ok i see what u mean. erm whats all the PFR7G/B business? im abit confused

 

It's the code of the plug made by NGK...

PFR6B - for no mods... or filter, decat dowmpipe.
PFR7B - for remapped motors with increased boost levels.

The 6 and 7 part of the code is the plug heat range - the lower the number the hotter it runs. That's why 7s are fitted to motors running up to about 450bhp - can also get PFR8B or NGK Racing 8s for really high power - as the 7's colder running helps with heat/pressure management which helps with engine safety/optimal running.

 

ok thank u joz for that breakdown i understand now. as you mention about how the 7s are used for upto 450hp, my car will produce about 330hp after the map isit vital for me to have the 7s? i have 6s atm...i have bought the 7s already lol

 

It'll run okay on 6s for sure, but they may wear out earlier, I'd defo put 7's in at that bhp level BEFORE the map... so that they can be mapped for. They should help net a very small gain, cause they will help maintain cooler cylinder temps. It's more of a safety thing really.

You can get 'em off eBay, individually boxed, for less than £30.Just sell on the 6's on eBay or here, for about £20, so you won't be out of pocket by any great degree.

 

i bought the 7s for £38 from a local superspares. so i can sell the used 6s for £20, or are you assuming they are new?

 

My apologies - I did assume you bought 6's that you hadn't yet fitted. Second hand plugs aren't worth anything really. I sold my previous used 6's (good condition though) on eBay for £6 lol.

Just put it down to experience.

 

lol, £6 check you out

 

Yes, an embarrassing admission for sure

 

well every pound equates to 1bhp

 

If only bhp was that cheap!

At least it is relatively cheap to tune turbo cars in the initial stages, then the law of diiminishing returns apply the further you go. Especially from 450+ on the Scoob. Then a lot harder from 500+...