subaru2000

Ive got some new ngk sparkplugs to put in my00 turbo and was wondering if anyone could tell me the correct gap they should be set at?

gbn1999

hi i just put new plug in my 1999 and i just put them in as i got them and the car is running ok
gbn 1999

jamesbWRXRA

Spark plugs should be set to the correct gaps otherwise apparently they can cause problems with boost. I am not sure if its the same with an MY00 but i think that an MY95 is 0.5mm.

James

Gear Head

iTrader: (2)

0.5mm is too small for a near standard car. Basically, you won't be creating a big enough spark, so you'll possibly lose power and suffer poor fuel consumption.
For an Impreza upto roughly 400bhp, a gap of 0.7mm should be fine.

Chris

bluerigster

iTrader: (9)

The correct gap size is 0.5mm. The reason being is if the gap is any bigger the spark has tendency to not arc across the gap and escapes from the side of the gap it's self. This results in incomplete combustion causing the car to jurk when intially coming onto boost. The effect is worsened the greater amount of boost your running. This is what I've noticed on my car running 1 bar of boost.

Gear Head

iTrader: (2)

https://www.scoobynet.com/general-te...spark+plug+gap
https://www.scoobynet.com/general-te...spark+plug+gap
https://www.scoobynet.com/general-te...spark+plug+gap
https://www.scoobynet.com/general-te...spark+plug+gap
https://www.scoobynet.com/general-te...spark+plug+gap
https://www.scoobynet.com/general-te...spark+plug+gap

subaru2000

Thanks for the help

DevilHimSelf

.7 is the best for a MY00 Turbo, TSL recommended it for mine when i was last over there.

silent running

0.7 was what I was told, by everyone. Which was exactly what mine were when they were new.

James Neill

iTrader: (1)

.7 is what I use. MY00 STi 6 and all OK

harvey

iTrader: (48)

.7 mm except on highly tuned cars or cars using high boost. In these cases reducing the gap to .5mm may be necessary to avoid misfire at high revs