What problems from wrong spark plug gap?

[evolutionmovement]

Your post is confusing as you jump from gap to heat range without really specifying the topic change other than the change of paragraph. However, the second sentence of the second paragraph again returns to a measurement for gap. Seems to me he was just trying to correct what he thought may have been a misconception due to the lack of clarity in the post.

[NICO]

^^ LOL.

i use bkr7e 11 gap then to 30 and i am fine with huge turbo.

for my stock car i use bkr6e 11 gap them to 30 also and no problems for me.

also we use 94octane in canada.

[tmarcel]

Your post is confusing as you jump from gap to heat range without really specifying the topic change other than the change of paragraph. However, the second sentence of the second paragraph again returns to a measurement for gap. Seems to me he was just trying to correct what he thought may have been a misconception due to the lack of clarity in the post.

Yeah I try and keep it confusing yo

[tmarcel]

Most spark plugs are pregapped from the factory these days... Most of us like to use NGK BKR6E-11 plugs, right? The "11" means "1.1 millimeter gap."

So you generally don't need to adjust the gap at all.

If you guys are looking to push things a bit further (larger than stock turbos and more boost), I would definitely not run the NGK -11 plugs on turbo motors. That's far too much gap for boosted applications running decent sized turbos and a bit of boost. Sure, you can do it, but it'll put a lot of strain on your ignition system and compromise misfires as well.

On decently modded Subarus, I typically run NGK BKR7EIX and even the 8's for cars making a bit more power. These plugs are gapped at .030" out of the box. If the Subaru layout wasn't so dificult to work on (well at least on Imprezas) I would try pushing the gaps out a little. But it works great like this and no worries. Plus, Iridium performs as well as copper and has the maintenance life span of platinum.

My point was, and IS, that the -11 plugs are too much for turbo motors. Why all the bitterness?

[tmarcel]

^^ LOL.

i use bkr7e 11 gap then to 30 and i am fine with huge turbo.

for my stock car i use bkr6e 11 gap them to 30 also and no problems for me.

also we use 94octane in canada.

Good luck to you.

[NICO]

^^ LOL.

i use bkr7e 11 gap then to 30 and i am fine with huge turbo.

for my stock car i use bkr6e 11 gap them to 30 also and no problems for me.

also we use 94octane in canada.

Good luck to you.

is that bad or good?

becuse everytime i change to something else other then a bkr7 or 6 e 11 i would get a misfire? mind you i change them 3 times a year.

so NGK BKR7EIX is the plug to try? well its a stock legacy for the test. i bet it misfires.

[NICO]

tryed them and sure a nuff ping pong was the game!! wasted 10bucks...... legacy turbos just dont like them at all.

ngk bkr6e11 sticking with them for ever.

[BXSS]

I went from BKR7E-11 to some Blitz Iridium 8's on my Impreza Turbo, worked OK but I had good luck with the 7's for 4 years gap = .028-.030.

I'm using Iridum NGK 6's (with an STi label on them?) on the EJ20G'd SS, it seems to like those right now.