RolexNJ

As per ST ---> NGK BPR7ES

lart951

I got my recommendation from the great 951 master TonyG not from ST.

special tool

Oh my God - what a ball-breaker!!

RolexNJ

Actually, the Guru also told me which ones to use. Here is a pic of him just before a model photo shoot in Kiwiville. And wow, what fly-*** colors on his suit too!

streckfu's

I've been running .28 but can't quantify a difference.

PorscheDoc

We dyno tested a few different spark plugs for the hell of it on a turbo S. NGK and bosch coppers, and then just for the hell of it, bosch platinum +4 (of course which bosch does not recommend for turbo and supercharged cars). The bosch and ngk coppers gave similar results. The platinum +4s actually ran about 4hp stronger at the wheels. Wouldn't run them in my car, but I thought the results were interesting.

Zero10

Karl2bdc, did you try a used set on the dyno?
I as well have heard that they will give good results when new, but after a few hundred miles they will result in a power loss (I have no idea what could change, just passing on a possible myth here).

TurboTommy

"BPR7ES"
So, is that a copper plug? (I'm sorry; I didn't get it for sure, reading the posts)
What heat range # does that correspond to with a bosch plug?
If it's not the the stock heat range plug, which NGK # would be (the one that corresponds to the "7s" in the bosch range)?

Luis de Prat

Porsche dealer parts counter replacement plugs for the 951 are "Beru Ultra."

That's what I use.

hosrom_951

That is around 0.66mm, the manual shows 0.7mm + 0.1mm (or 0.8mm in simple terms).

I ran mine at 0.7mm (out of the box NGK's), compared it when i made the gap 0.8mm and the car ran a lot smoother.

Note, when i spoke to the NGK dealer and informed him these plugs (BPR7ES) would be used in a turbo application, he informed me that those plugs should be replaced every 10,000kms and that this plug is the 'cheapest' or lowest range plug they have.

EdC

Turbo Tommy see http://www.sparkplugs.com/Default.asp It is a usefull site for plug info.
If you look around there you should find your answers. It esplains het ranges etc.

lart951

Well as I said before I got my advise from the great 951 master TonyG. He is building a monster 951 as we speak, that is going to make norwood's doom car look like a toy. He sent me a picture of what is about to happen very soon.

HIGHBOOST

so why does everybody choose this plug? NGK bpr7es?

PorscheDoc

No, all the plugs were new. It wasn't something we set out to test specifically, but we had the car on the dyno and since the owner was in club racing with restrictions, we decided we would see what would happen with different plugs. Don't have any clue on how they perform after a certain mileage. I run standard bosch plugs in my car though. I have run the NGK's as well, but i really dont notice any difference between the two.

Crazy Eddie

Where is the cheapest place to get them ? or maybe it doest matter as the are
pretty much the same price eveywhere ?
TIA
Reagrds
Ed