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Long Term Spark Plug Thoughts

loudspl

New member
Location
San Antonio, Texas
Car(s)
GLI, GTI, TDI
I tried a set of Brisk ER10S and got all kinds of misfires. Maybe a bad set?
Switched to RS7s and ran perfectly until it gets hot after harder driving.

Going to try Denso IKH27s next. I think I do need 2 steps colder in my GTI for aggressive sustained use.

GLI seems very happy with Ruths, but I don't beat on it either so that could be a factor
 

El_bigote_AJ

Autocross Champion
Location
Las Vegas
Car(s)
2019 GTI bunny
I tried a set of Brisk ER10S and got all kinds of misfires. Maybe a bad set?
Switched to RS7s and ran perfectly until it gets hot after harder driving.

Going to try Denso IKH27s next. I think I do need 2 steps colder in my GTI for aggressive sustained use.

GLI seems very happy with Ruths, but I don't beat on it either so that could be a factor
Been running the 10s for a few days now, been fine, but I think I liked the 12s better, felt smoother at idle
 

Daks

Autocross Champion
Location
Toronto
Car(s)
GTI PP
On a stock turbo (is38 or smaller) stock plugs are perfectly fine. Suspect people aren't using a proper gap tool (those coin tools or tapping with a hammer aren't it) or not checking them enough if the electrode is failing. They like to open up pretty quickly and the PCV sucks at keeping oil off them with lots of boost.
Link to a proper tool?
 

Acadia18

Autocross Champion
Location
The Greater Boston Metropolitan Area
Car(s)
2019 Golf R

Lord_Flexington

Drag Racing Champion
Location
Syracuse
Car(s)
15 MK7 GTI LP PP
I tried a set of Brisk ER10S and got all kinds of misfires. Maybe a bad set?
Switched to RS7s and ran perfectly until it gets hot after harder driving.

Going to try Denso IKH27s next. I think I do need 2 steps colder in my GTI for aggressive sustained use.

GLI seems very happy with Ruths, but I don't beat on it either so that could be a factor
Are the Ikh27s the same as the 5750s?

https://www.fcpeuro.com/products/spark-plug-denso-racing-5750

I just happened to notice these and I LOVE items with racing in the title.
 

CaptainRatty

Autocross Champion
Location
Winston-Salem, NC
Car(s)
MK7 GTI
More people blowing motors with NGK RS7 plugs on the EQT page… wtf is going on?
 

tigeo

Autocross Champion
Beat on these Ruth's for 2K miles...so far so good!
 
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