Spark plugs again
Turbo Mini Forums

I know this has been covered many times before but...

I'm going to run Champion RN7YC (equivalent to NGK BPR7ES) whilst I run the engine in then maybe go for something more 'racey' for the strip. I know Dave has tried Champion C57's has anyone tried C59's? Or there is also a race type Motorcraft plug that was used on the RS turbo escort which i believe was good.

Thoughts anyone?

It's all fun and games until someone gets hurt... Then it's hilarious!

Good question, im confused by sparkplugs

As a result ive only ever run champion std metro turbo plugs in mine

I'm not sure that the RN7YC is equivalent to the BPR7ES.

There is an equivalent chart somewhere.

Edit: Champion 7s are equiv to NGK 8s. Champion 9s are equiv to NGK 7s.

Edited by Paul S on 14th Mar, 2008.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Ive never liked Champion... NGK or Denso for me.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Ive been using champion n9yc dont even know what they are out of put they were cheap and had no problems!

dont get bosh super 4's lol i got some because they were cheep for my N/a and they suck so much, got to get some new plugs 2moz

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-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

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standard john, are champion N9YC
but i run two grades cooler N7YC

Always used NGK. Found BP8's quite good. Still experimenting, and not much engine running yet.

Heres a good'n' for plugs.

http://www.spark-plugs.co.uk/pages/technical/ngkjpg.htm

For comparison......

http://www.spark-plugs.co.uk/pages/technical/x-ref.htm

Edited by Jason G on 17th Mar, 2008.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

I've been running the standard NGK plugs for the Metro Turbo for ages now, 20psi with no problems.

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Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
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Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Maybe Wil, but in the summer all is well. it's a job to know i guess

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

i don't get spark plugs at all! need to read up about them i think.
all i know is that when my girlfriend had her mini rolling roaded the other day, the operator changed the plugs to a ngk b5 something or other, i think he said it was a hotter plug, and also the electrode doesn't project in the the combustion chamber like most plugs, which he said is what a mini is supposed to have.

i've got 8's i think, anyway, the std escort RS turbo plug.
no fouling at all, even when they get real wet they dry out.

The cooler the plug the less the electrode sticks out, that's how it works.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

All a plug is .... for the spark to jump across ignighting the fuel
now some engines run hotter than others in the combustion chambers

the manufacturers make hotter and cooler plugs to suite that particular engine wether it be tuned or not
now! if you chose a hotter plug than the engine likes it cant dissipate the heat out and burns the tip out (not good)

so you drop down to the next cooler plug

if the plugs too cool it cant burn the combustion debris off and it fouls up ..no spark across

as a rule of thumb on a mildly boosted tuned engine drop one plug grade cooler
on an engine which is doing a lot of boost drop 2 plug grades cooler
I personally run 2 grades cooler

that’s the “basics” really

when i ran 6's or 7's (first fire on the rollers) we lost the end of the electrode one hell of a bang it made!

Hi,
There's another type of NGK plug out now with a retracted electrode, but I can't remember the part number :(
Also those running dizzys may need a grade warmer than those with coil packs
Cheers,
Gavin :)

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Hi all, try the race plug NGK B8EGV, very small electrode but works well, if you give the heaps that is with boost around 15 and up, pitty they don make a B7EGV, if the 8 fouls you have to go to the BPR7ES.

179hp on 12psi 1293cc of pure A series
14.0et @101 mph