Is it possible to get too cold of a plug? I'm turboing my Prelude and was shopping for plugs adn came up with this stupid quesion. So, is is poddible? And what would happen?

 

to a point where it cant clean itself.. prolly at idle at most of the time....try to get ngk copper i forget the part numbers

 

I would only go 1 stage colder unless you are running over 12 lbs of boost.

 

wow from what i learned at the tuning seminar by ben strader yes you can actually get a too cold plug what happens is that it does burn correctly on the electrode strap. what you want is actually a colored rainbow color, on the strap too cold or too hot and too much retard and too much ignition advance will cause that rainbow color to move up and down.

.

 

so, your suggestion on plugs for 1 BAR plus would be.....

 

so is 2 steps is too cold? Or is it ok? I'm looking to run 10psi ~12psi daily and 1 bar at the track

 

sorry to hijack, but i'm running Bkr7E specs below. my plugs seem to foul rather quickly. should i use standard plugs?

 

I'm using Apexi racing plugs #8...they are actually better than the NGK's I had. Unfortunately they cost $12 EACH


#7'spictured here

 

heres my suggestions.. buy regular plugs for the street use and another set of sparkplugs for the track.. i suggest iridium for the track.. and 1 step colder for the street.. i mean the iridium plugs should last for a long time since its gonna be used only so often just down the track and back...after that just swap it out.. doest take long anyways just keep a wratchet and extention and socket for the plugs and your all set...

 

i'm still running stock plugs/heat range. don't seem to have any probs at 8psi running 1/3 degree of retard per pound of boost. does this sound right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turbo E &raquo;</TD></TR><TR><TD CLASS="quote">sorry to hijack, but i'm running Bkr7E specs below. my plugs seem to foul rather quickly. should i use standard plugs?</TD></TR></TABLE>

BTW which is colder BKR7E (shorter/recessed insulator) or 7FR5J-11 (longer/extended insulator)

 

On my 99 Civic Si, the BKR7E copper plugs were 1 step colder than stock. But I'm using some BKR7EIX-11's Iridiums which are 2 steps colder, which is way too expensive, and an overkill, so I'll be going to BKR7E.

Besides, I'm only pushing 5psi.

 

bump

 

I ran 2 steps colder on the Civic (stock was a 5-series, I ran BCPR7E's) and never had a problem with it... just my .02

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MiraiZ &raquo;</TD></TR><TR><TD CLASS="quote">I'm using Apexi racing plugs #8...they are actually better than the NGK's I had. Unfortunately they cost $12 EACH


#7'spictured here</TD></TR></TABLE>

Not to say they aren't good, but I'd wager they are made by NGK/Denso. I don't think there is any way that Apexi manufactures plugs.

 

Article on Plugs

Might be of some interest to the current topic.

 

FWIW the BKR7E and BKR7EIX-11 are the same heat range. The "7" indicates the heat range. Higher is colder. The "-11" signifies the pulg gap (-11 = 0.044" gap).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">Article on Plugs

Might be of some interest to the current topic.</TD></TR></TABLE>

good stuff thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ion_four &raquo;</TD></TR><TR><TD CLASS="quote">

Not to say they aren't good, but I'd wager they are made by NGK/Denso. I don't think there is any way that Apexi manufactures plugs.</TD></TR></TABLE>

you're probably right...they look suspiciously like NGK...I guess its just the lower heat range that makes my car run smoother...

 

i run 1 bar daily and use ngk 8's. no problems