how do i know if the spark plug gap is too small or too big, im in a turbo d16 ek

(yes i tried to post this in forced induction but it kept saying i must be logged in)

ive made my plug gaps at 0.032 but as for now im only running 5psi and producing a small 90kw atw i dont think i need to shrink the gap that much, is there any way to know, i wanna fix the gap till i get this ecu setup upgraded for bigger performance (5-6 months time)

 

Your post doesn’t ******* belong here, but to answer your question, you want the largest gap possible with out the spark getting blown out. A safe size for if is .030” if it’s cutting under heavy load narrow the gap.

 

thanx but ummmmmmm did you read what i wrote?????

i said i tried to post it in forced induction but the forums script wasnt letting me!

so when u say cutting under heavy load, you mean power is getting killed?

 

the gap for specification is for
Na cars

the gap for FI

should be according to my helms manuals
.032" or lower

hope this has been helpful

 

it has thank you very much, here is a good reading also:

http://www.4strokes.com/tech/sparkplg.asp

http://www.dragstuff.com/techa....html

(although for bikes, helps with cars too)

i wonder if anyone is running 3 step cooler plugs?




Modified by rnbguy at 8:28 PM 8/31/2007

 

gap it between .28 and .30, i use .30

 

b16 9:1 280hp @ 15lbs on small turbo .032" that's just me though

 

i had my FI setup gapped at .28

there was a 5whp difference between .36 and .28 for me on the dyno.

$.02
-jonathan