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- - iridium plugs (https://www.scoobynet.com/general-technical-10/476932-iridium-plugs.html)

rexabusa

12 December 2005 10:19 PM

iridium plugs

just seen a set of ngk iridium plug on ebay for £26, is this a hotter or colder plug and do i add these if i am upping boost. sorry for :iamwithst qstns - i am still learnig

harvey

12 December 2005 10:27 PM

Stick with NGK PFR7B. I have not had them fall apart. I have suffered a broken insulator that took out a cylinder head with HKS Iridium and know of others with similar failures around the same time.

rexabusa

12 December 2005 10:34 PM

thats shocking:cry: , i take it the insulater is the piece around the base of plug in cylinder. thanks for warning mate:notworthy i think i will stick to pfr6or7s

LegacySTi

12 December 2005 10:36 PM

Yes heard this before. Stick with the 7B's if running above 280bhp.

Gear Head

12 December 2005 10:58 PM

Didn't Jap mags 'project 200sx' have a HKS spark plug fall apart and stuff the engine last month?

JIM THEO

13 December 2005 07:33 AM

STI offers as uprated the NGK BKR7EIX plugs but many people rate the platinums above iridiums regarding reliability.
JIM

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