1.8t Spark Plugs, PFR6Q vs BKUR6ET

[dodge]

I'm in the process of sorting out some electrical gremlin in my gti (recently chipped) and while it's off the road I thought I'd renew the spark plugs.

Between VWvortex, NGK's website and this forum, the ideal replacement seems to be the NGK BKUR6ETs. I picked up four of them today and have installed them but when I compared the newies to what was in there, the old plugs look like they would sit about 5mm lower than the new ones.
Stamping on the old ones says PFR6Q which is OEM spec so I was wondering if anyone else has noticed such a difference? Sorry for the poor quality phone pic..


The new ones have also got 3 prongs and as such aren't adjustable (well not accurately anyway) so I'm stuck with the 1mm gap they came with.

[ope126]

Here is a thread from when I did the same thing in my MK4...

http://www.vwwatercooled.org.au/newforum/upload/showthread.php?t=21402&highlight=spark+plugs

I hope this helps.

[dodge]

hey ope126,
Yeah that was one of the threads that led me to get the BKUR6ET's.
Did you ever notice any difference in length? My thinking is that the position of the spark in the cylinder is going to have a far greater influence on combustion than any 'better' sparks or general spark plug advertising mumbo jumbo.

I hadn't previously read the thread you linked to on vortex however. Changing plugs every 5k miles? bugger that

[tommymac]

I use the BKR7E. in the mk2 1.8t its spot on if your running higher boost.

[lilcrash]

just a note to future people reading this, 3 and 4 prong spark plugs do not offer any better spark compared to a single prong its just a sales gimick, dont buy them.