NGK Spark Plug Question

[Ashwin]

Hi all,

Intend to replace the sparkies this w/end on the old petrol au3. Does anyone know if we can still use the standard NGK BPR5EY-11 as opposed to the recommended (and $$$) iridium IGR5C13 ? Would I have to increase the gap to 1.3 on the std's??

thanks!

-ash

[Evgeni]

Originally Posted by Ashwin

Hi all,

Intend to replace the sparkies this w/end on the old petrol au3. Does anyone know if we can still use the standard NGK BPR5EY-11 as opposed to the recommended (and $$$) iridium IGR5C13 ? Would I have to increase the gap to 1.3 on the std's??

thanks!

-ash

I have been using these for the past 5 years on the AU - it is dual fuel though. I found you do lose a little performance on petrol, but they are great for lpg. Never had to re-gap.

[robbyj]

standard for me. Iridium seem a waste of $

[PoweredByCNG]

Bosch double platinum plugs for the win. They last well over 100,000km on a petrol engine or around 100,000km on LPG.

[Mr Hardware]

stick with the old BPR5EY-11's for petrol mate. BPR6EY's for LPG.
I reliably get 50,000k out of a set of BPR6EY's (and that's on spark-picky LPG!) and at less than four bucks each, they can't be beaten.

[mik]

i`m a bit of an iridium fan, 115,000 k`s out of the last set still going ok, only changed them because they`ve been in for years, tbh i was a bit afraid they where going to have permanently welded themselves into the head, but they came out easy.

[Day-mow]

i gapped mine @ 1.1mm but i have a VCT engine. the BPR5EY-11 are good. i changed mine every 10-15k km

[Mr Hardware]

10-15k? you're throwing away perfectly good plugs mate

[T4ME]

Those cheaper plugs are designed for 20,000kms though really,yeah you can get more but they aren't designed with this in mind.

[bear351c]

The 11 at the end of BPR5EY-11, should be the gap, set at the factory. BPR5EY-13 should have a gap of 1.3mm. I always check, cos I'm an old fart. Generally speaking, close the gap by 0.1mm for gas, (less carbon atoms in LPG) and go one range hotter.