Spark Plug Dimentia
 

I'm getting ready to go through the maintainance items on my 89 930. While I was putting together my parts list I priced the Porsche recommended Bosch W3DPO's. Needless to say I have never heard of a $12 spark plug.... so I started looking into the alternatives. The parts catalog here lists the BPR6ES as the NGK plug for the 89 911 Turbo, so I did some forum searching to see what I could find. After reading a number of posts I get the impression that the 6 series NGK's could be too hot for most driving conditions. I then checked the NGK site and they recommend the BP8EVX. This brings several questions to mind.

Is the Bosch W3DPO really worth $12 a plug? :confused:

Is NGK a good alternative? :)

Would the BPR6ES cook my pistons at Lime Rock in July? :mad:

When will Pelican have the BP8EVX in stock? ;)


Thanks in advance.

Jeff
89 930

Jeff,

The NGK '6' series is definitely too hot for a turbo! I have seen the 'ordinary' B-9ES recommended for a turbo elsewhere.

$12???!!! Count yourself lucky! I've just had the 60,000-mile service on my Alfa 156 2.0. Now the "great" thing about the spark plugs on the 156 is that they only need changing every 60,000 miles (fantastic, I hear you say!). The not-so-great news is that they are about £22 each (plus tax), and there are 8 of them. That's £200 just to change the spark plugs. After I recovered from paying for that, I realised I should have asked for the old ones back to mount on my mantelpiece as the Most Expensive Spark Plugs I have ever come across.

Still Smarting

True Brit.

Well ... there was a thread a few months back about the lunacy of $29 or so sparkplugs at a dealer!

Thanks Warren, I do believe you have the most replies in the old plug threads :) and I was wondering if you would appear here. I ran across a PDF in the archives on NGK codes. I started reading through it and realized it would be winter again before I decided on the right plug. Maybe too much knowledge can be a bad thing ;) .

Wow True Brit, I can see why you're still smarting.....I don't know the conversion rate for the currency but that sure sounds like a lot of cash.


Jeff
89 930