EDIT: I was wrong. BPR6EFS is 6mm shorter than NGK recommened plug.
EDIT: I was wrong. BPR6EFS is 6mm shorter than NGK recommened plug.
Last edited by iamhappy46; 04-02-2009 at 06:26 PM.
PZTR5A is a the right length as the BPR6EFS-15 and BPR6EFIX-15, knew I measued them right Just used the NGK identification in my home copy of the NGK catalogue and they list them both as having a 17.5mm thread length, both protruding electrode, etc
Edit: Also, the USA sourced TR5 plug is not the plug to use in an LS1, the TR55 or TR6 plug is the more suitable heat range.
Last edited by iamhappy46; 04-02-2009 at 06:38 PM.
yes TR55 sorry. on the BPR6EF, back when I bought them they were not the same plugs as TR55 or TR6. the electrode protruding into the chamber was shorter, and my car consistently went slower at the track with them in. either NGK later modified the design to suit ls1's, or Holden doesnt care and near enough is good enough. judging from what else Holden differ to the US models, I wouldnt be suprised.
Last edited by r8ls1; 04-02-2009 at 08:45 PM.
I used the BPR6EFS-15 plugs in my VE and ran my quickest time at the track with them no complaints from me with em.
cheers
VERY INTERESTING if your chassing those few extra KW's and Nm's !!
http://www.briskusa.com/images/GMHighTechMagazine.pdf
Hi guys,
I own a 02 VY SV8 with only extractors and full exhaust...
Can you please give me a NGK spark plug number for what you recommend. I also would rather put in say a copper head or Iridium than having a plug stay in there for 90k plus..(i.e Platinum )
Thanks guys much appreciated as i want to head to supercheap today and change them...
NGK website recomends : PZTR5A-15 but not sure if this is a Platnum
Last edited by SLEEPRSV8; 04-04-2009 at 08:50 AM.
Ok just read through this, but still not sure as most of it went over my head.
I need new plugs for my SS with 240+ cam and heads and am not sure on what would be best - do I just use the recommended one from NGK which is the platinum one (PZTR5A-15) or the copper one (BPR6EF-15)
So any advice would be greatly appreciated.
Thanks
Dave
Dave, go the BPR6EF-15 they are a hell of alot cheaper and have served me well.
Just took them out for the blower install and they look perfect after 6 months use.
Mick
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